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ceramic ball mill pictures

ball milling

ball milling

A method of grinding particles in ceramic powders and slurries. A porcelain vessel filled with porcelain pebbles tumbles and particles are ground between colliding pebbles. Details A device used to reduce the particle size of materials, bodies or glazes. A ball mill is simply a container that is filled with pebbles (either of porcelain or stones e.g. Flint) into which a charge (powder or slurry) is put and that is then mechanically rotated to cause the tumbling pebbles to crush particles that happen between them. Ball mills can be continuous or periodic, they can be small or gigantic, low speed or high speed, rotated or vibrated or both. For maximum efficiency a ball mill should be made of, or lined with, a porcelain or other very hard surface (so grinding also occurs between the wall and the balls), the balls should be of a range of sizes (to maximize points of contact), the mill should have the correct quantity of balls, the slurry should be the right viscosity and the charge should be an optimal amount (over charging reduces efficiency). Various compromises are often made (for example rubber lined mills to reduce wear and noise). Large manufacturers hire ball mix supervisors, operators and mechanics. Technicians occupy themselves with getting a consistent and predictable product (surface area and particle size distribution), they employ mathematical formulas to determine the amount of balls needed, distribution of ball sizes and other operating parameters like duration and speed. They are wary of grinding products as mixes, it is often better to mill hard and soft powders separately and combine them later. Engineers typically use surface area measurement instrumentation to evaluate mill efficiency. Ball mills can reduce particles to the nano sizes, the process is very important in creating powders used in hi-tech industries (e.g. alumina). Ball mills are slow compared to other methods of grinding, it could take hours, for example, to grind all the particles in a clay to minus 200 mesh. Industrial mills seeking nano-sizes might run 24 hours or more! Ball milling is normally done in consort with wet screening and/or roller-milling/air floating, for example, so that large particles have already been removed by the time the material reaches the ball mill. Air floating can also be done in consort with dust ball milling. The milling process can also reduce particle sizes by too much for an application, so a means of measuring the distribution of ultimate particles is important to be able to set the parameters for the process. A clay body that has been ball milled will be more plastic, potentially much more plastic. Ball milling of the body or selected body materials will reduce or eliminate many types of fired glaze imperfections (especially specking, blistering and pin-holing). That being said and as already noted, iron particulates are best removed before milling). Milling a glaze will produce a cleaner fired result with less imperfections. Materials deliver their chemistry to the glaze melt only if their particles dissolve in the melt. But some glaze materials are refractory and resistant to dissolving (e.g. silica, alumina). When silica does not completely dissolve in a transparent glaze it will fire cloudy and its actual thermal expansion will be higher than it would otherwise be. By ball milling silica to very small particle sizes all the particles dissolve, producing a much better fired product. Milling of slurries presents less technical challenges than dust milling. We have found that thicker creamy slurries mill better than watery ones. A simple ball mill can be constructed by almost anyone, but obtaining the hard pebbles with the correct range of sizes for inside the mill can be challenge (they are expensive). Related Information How long do you need to ball mill a glaze? You can measure to see. How? Wash a measured amount through a 200 mesh screen and note the amount of residue. These two show the oversize on a 200 mesh screen of 100 grams of glaze slurry. On the left: Unmilled. On the right: Milled 1 hour. Clearly it needs more than 1 hour in this mill. A factor here is the high percentage of silica in this recipe. And the fact that US Silica #95 rather than #45 was used. DIY wheel mount ball mill rack Courtesy of Lawrence Weathers Ball mill jar and rack made by @andygravesstructures Make your own ball mill rack - Front side Possible to grind your own ceramic grade rutile? Yes, the granular and powdered grades are the same material. But grinding it is very difficult. Commercial ceramic grade powder is minus 325 mesh, the companies doing this obviously have very good grinding equipment. They also have patience because even in this efficient porcelain ball mill, 90 minutes was only enough to get 50% to minus 325 mesh! The color of the powder is a good indication of its quality, the finer the grind the lighter will be the tan coloration. Particle size drastically affects drying performance These DFAC testers compare the drying performance of Plainsman A2 ball clay at 10 mesh (left) and ball milled (right). This test dries a flat disk that has the center section covered to delay its progress in comparison to the outer section (thus setting up stresses). Finer particle sizes greatly increase shrinkage and this increases the number of cracks and the cracking pattern of this specimen. Notice it has also increased the amount of soluble salts that have concentrated between the two zones, more is dissolving because of the increased particle surface area. Can we ball mill a clay and make it more colloidal? Yes. This 1000 ml 24 hour sedimentation test compares Plainsman A2 ball clay ground to 10 mesh (left) with that same material ball milled for an hour (right). The 10 mesh designation is a little misleading, those are agglomerates. When it is put into water many of those particles break down releasing the ultimates and it does suspend fairly well. But after 24 hours, not only has it settled completely from the upper section but there is a heavy sediment on the bottom. But with the milled material it has only settled slightly and there is no sediment on the bottom. Clearly, using an industrial attrition ball mill this material could be made completely colloidal. Links URLs http://www.thecementgrindingoffice.com/typesofballmills.html Types of Ball Mills Articles Make Your Own Ball Mill Stand Pictures of a ball mill rack that you can make yourself Articles Ball Milling Glazes, Bodies, Engobes Industries ball mill their glazes, engobes and even bodies as standard practice. Yet few potters even have a ball mill or know what one is. By Tony Hansen Tell Us How to Improve This Page Or ask a question and we will alter this page to better answer it. Email Address Name Subject Message Content of message Prove you are not a robot: Enter this text (CAPITAL letters only) or Refresh https://digitalfire.com, All Rights Reserved Privacy Policy

A device used to reduce the particle size of materials, bodies or glazes. A ball mill is simply a container that is filled with pebbles (either of porcelain or stones e.g. Flint) into which a charge (powder or slurry) is put and that is then mechanically rotated to cause the tumbling pebbles to crush particles that happen between them. Ball mills can be continuous or periodic, they can be small or gigantic, low speed or high speed, rotated or vibrated or both. For maximum efficiency a ball mill should be made of, or lined with, a porcelain or other very hard surface (so grinding also occurs between the wall and the balls), the balls should be of a range of sizes (to maximize points of contact), the mill should have the correct quantity of balls, the slurry should be the right viscosity and the charge should be an optimal amount (over charging reduces efficiency). Various compromises are often made (for example rubber lined mills to reduce wear and noise). Large manufacturers hire ball mix supervisors, operators and mechanics. Technicians occupy themselves with getting a consistent and predictable product (surface area and particle size distribution), they employ mathematical formulas to determine the amount of balls needed, distribution of ball sizes and other operating parameters like duration and speed. They are wary of grinding products as mixes, it is often better to mill hard and soft powders separately and combine them later. Engineers typically use surface area measurement instrumentation to evaluate mill efficiency. Ball mills can reduce particles to the nano sizes, the process is very important in creating powders used in hi-tech industries (e.g. alumina). Ball mills are slow compared to other methods of grinding, it could take hours, for example, to grind all the particles in a clay to minus 200 mesh. Industrial mills seeking nano-sizes might run 24 hours or more! Ball milling is normally done in consort with wet screening and/or roller-milling/air floating, for example, so that large particles have already been removed by the time the material reaches the ball mill. Air floating can also be done in consort with dust ball milling. The milling process can also reduce particle sizes by too much for an application, so a means of measuring the distribution of ultimate particles is important to be able to set the parameters for the process. A clay body that has been ball milled will be more plastic, potentially much more plastic. Ball milling of the body or selected body materials will reduce or eliminate many types of fired glaze imperfections (especially specking, blistering and pin-holing). That being said and as already noted, iron particulates are best removed before milling). Milling a glaze will produce a cleaner fired result with less imperfections. Materials deliver their chemistry to the glaze melt only if their particles dissolve in the melt. But some glaze materials are refractory and resistant to dissolving (e.g. silica, alumina). When silica does not completely dissolve in a transparent glaze it will fire cloudy and its actual thermal expansion will be higher than it would otherwise be. By ball milling silica to very small particle sizes all the particles dissolve, producing a much better fired product. Milling of slurries presents less technical challenges than dust milling. We have found that thicker creamy slurries mill better than watery ones. A simple ball mill can be constructed by almost anyone, but obtaining the hard pebbles with the correct range of sizes for inside the mill can be challenge (they are expensive).

You can measure to see. How? Wash a measured amount through a 200 mesh screen and note the amount of residue. These two show the oversize on a 200 mesh screen of 100 grams of glaze slurry. On the left: Unmilled. On the right: Milled 1 hour. Clearly it needs more than 1 hour in this mill. A factor here is the high percentage of silica in this recipe. And the fact that US Silica #95 rather than #45 was used.

Yes, the granular and powdered grades are the same material. But grinding it is very difficult. Commercial ceramic grade powder is minus 325 mesh, the companies doing this obviously have very good grinding equipment. They also have patience because even in this efficient porcelain ball mill, 90 minutes was only enough to get 50% to minus 325 mesh! The color of the powder is a good indication of its quality, the finer the grind the lighter will be the tan coloration.

These DFAC testers compare the drying performance of Plainsman A2 ball clay at 10 mesh (left) and ball milled (right). This test dries a flat disk that has the center section covered to delay its progress in comparison to the outer section (thus setting up stresses). Finer particle sizes greatly increase shrinkage and this increases the number of cracks and the cracking pattern of this specimen. Notice it has also increased the amount of soluble salts that have concentrated between the two zones, more is dissolving because of the increased particle surface area.

This 1000 ml 24 hour sedimentation test compares Plainsman A2 ball clay ground to 10 mesh (left) with that same material ball milled for an hour (right). The 10 mesh designation is a little misleading, those are agglomerates. When it is put into water many of those particles break down releasing the ultimates and it does suspend fairly well. But after 24 hours, not only has it settled completely from the upper section but there is a heavy sediment on the bottom. But with the milled material it has only settled slightly and there is no sediment on the bottom. Clearly, using an industrial attrition ball mill this material could be made completely colloidal.

ball milling glazes, bodies, engobes

ball milling glazes, bodies, engobes

A true ball mill is a porcelain jar partly filled with spherical or rounded cylindrical porcelain balls. Industrial versions are made of metal and have porcelain linings. Small scale operations most commonly employ ball mills for grinding glazes. The suspension is poured in, a lid secured, and it is rotated on a motorized rack, sometimes for many hours. The tumbling balls within grind particles smaller and smaller as they impact each other (and crush particles that happen to be at the points of contact). The creamier glaze that milling produces applies better, has more stable viscosity, fires more consistently and cleaner with less specks and imperfections (eg. pinholes and blisters), and melts better. Glazes can be overmilled, this can produce solubility, crawling, opacification and slurry issues (since certain materials in the glaze need to be kept above a certain particle size to behave correctly).

Potters and hobbyists are generally not aware of the importance of the ball mill to industrial ceramic ware production. For a small-scale stoneware operation it is possible to survive without one using a narrow range of glazes and techniques. But when production is ramped up consistency, reliability of the glaze appearance and defect free ware become paramount. Many materials in ceramics are simply not ground fine enough for glazes (they produce fired specks or defects related to expulsion of gases around larger particles); ball, native and slip clays are an example. In other materialsfine particles agglomerate into larger ones (e.g. barium carbonate, tin oxide, wollastonite). Others are supplied as a grain-type material rather than a powder and obviously have to be milled (eg. lithium carbonate, alumina hydrate). Engobes that must be sprayed, sink screened or even inkjet printed must be ball milled or nozzles will clog and screen will blind. Obviously, bottled engobes and glazes that potter's buy are ball milled when produced.

Amazingly, many industries routinely grind their body materials in ball mills (e.g. the insulator and even tile industries). One Kalemaden plant we visited in Canakkale, Turkey (one of the largest in the world) airfloats and mills local clays for all their products. They even collect their own flint rocks and break and mill them to round. Companies may be seeking residues of less than 0.1% on 325 mesh. Other benefits also ensue, including more plasticity, better fired maturity and strength. The benefits are not only very high quality and defect defect-free products, but better consistency. Typically a slurry of 65% clay and 35% water is made (only possible if deflocculated) and ball milled, then dewatered (using filter presses, spray driers, etc) to make powder or pellets. In addition, materials will melt or go into solution in the melting glaze significantly better or sooner if they are ground finer.

A small mill rack is $700-1300 US. However you can build your own (see the links here). href="https://www.digitalfire.com/gerstleyborate/ballmill/">https://www.digitalfire.com/gerstleyborate/ballmill/ Or you google the booklet "Thoroughly Modern Milling" by Steve Harrison (it is intended to assist the potter in building a ball mill with a roller mechanism to handle a jar in the 3 to 5 gallon range). The text describes how to assemble the parts illustrated in the detail drawings and briefly describes making your own jar and ball from porcelain clay body. A4 size, 6 pages of text and 6 x A3 pages of detail mechanical drawings. There is one color photograph.

If you are using a ball mill in your operation resist the temptation to think that using one is just a matter of throwing in some pebbles, pouring in the glaze, and turning it on for an hour or so.As a general rule you should mill for the same amount of time, fill the jar to the same level, use the same charge of pebbles and the range of sizes of the pebbles should be controlled (the pebbles wear down over time). There are many finer pointsto know about using ball mills and industry uses the term "mill practice" to embody them. Variation caused by poor mill practice can create a number of significant fired glaze faults and affect slurry and application properties. To learn more check the book 'Ceramics Glaze Technology'. You should be able to find a copy at one of the used ceramic book vendors or information online.

ball mills

ball mills

In all ore dressing and milling Operations, including flotation, cyanidation, gravity concentration, and amalgamation, the Working Principle is to crush and grind, often with rob mill & ball mills, the ore in order to liberate the minerals. In the chemical and process industries, grinding is an important step in preparing raw materials for subsequent treatment.In present day practice, ore is reduced to a size many times finer than can be obtained with crushers. Over a period of many years various fine grinding machines have been developed and used, but the ball mill has become standard due to its simplicity and low operating cost.

A ball millefficiently operated performs a wide variety of services. In small milling plants, where simplicity is most essential, it is not economical to use more than single stage crushing, because the Steel-Head Ball or Rod Mill will take up to 2 feed and grind it to the desired fineness. In larger plants where several stages of coarse and fine crushing are used, it is customary to crush from 1/2 to as fine as 8 mesh.

Many grinding circuits necessitate regrinding of concentrates or middling products to extremely fine sizes to liberate the closely associated minerals from each other. In these cases, the feed to the ball mill may be from 10 to 100 mesh or even finer.

Where the finished product does not have to be uniform, a ball mill may be operated in open circuit, but where the finished product must be uniform it is essential that the grinding mill be used in closed circuit with a screen, if a coarse product is desired, and with a classifier if a fine product is required. In most cases it is desirable to operate the grinding mill in closed circuit with a screen or classifier as higher efficiency and capacity are obtained. Often a mill using steel rods as the grinding medium is recommended, where the product must have the minimum amount of fines (rods give a more nearly uniform product).

Often a problem requires some study to determine the economic fineness to which a product can or should be ground. In this case the 911Equipment Company offers its complete testing service so that accurate grinding mill size may be determined.

Until recently many operators have believed that one particular type of grinding mill had greater efficiency and resulting capacity than some other type. However, it is now commonly agreed and accepted that the work done by any ballmill depends directly upon the power input; the maximum power input into any ball or rod mill depends upon weight of grinding charge, mill speed, and liner design.

The apparent difference in capacities between grinding mills (listed as being the same size) is due to the fact that there is no uniform method of designating the size of a mill, for example: a 5 x 5 Ball Mill has a working diameter of 5 inside the liners and has 20 per cent more capacity than all other ball mills designated as 5 x 5 where the shell is 5 inside diameter and the working diameter is only 48 with the liners in place.

Ball-Rod Mills, based on 4 liners and capacity varying as 2.6 power of mill diameter, on the 5 size give 20 per cent increased capacity; on the 4 size, 25 per cent; and on the 3 size, 28 per cent. This fact should be carefully kept in mind when determining the capacity of a Steel- Head Ball-Rod Mill, as this unit can carry a greater ball or rod charge and has potentially higher capacity in a given size when the full ball or rod charge is carried.

A mill shorter in length may be used if the grinding problem indicates a definite power input. This allows the alternative of greater capacity at a later date or a considerable saving in first cost with a shorter mill, if reserve capacity is not desired. The capacities of Ball-Rod Mills are considerably higher than many other types because the diameters are measured inside the liners.

The correct grinding mill depends so much upon the particular ore being treated and the product desired, that a mill must have maximum flexibility in length, type of grinding medium, type of discharge, and speed.With the Ball-Rod Mill it is possible to build this unit in exact accordance with your requirements, as illustrated.

To best serve your needs, the Trunnion can be furnished with small (standard), medium, or large diameter opening for each type of discharge. The sketch shows diagrammatic arrangements of the four different types of discharge for each size of trunnion opening, and peripheral discharge is described later.

Ball-Rod Mills of the grate discharge type are made by adding the improved type of grates to a standard Ball-Rod Mill. These grates are bolted to the discharge head in much the same manner as the standard headliners.

The grates are of alloy steel and are cast integral with the lifter bars which are essential to the efficient operation of this type of ball or rod mill. These lifter bars have a similar action to a pump:i. e., in lifting the product so as to discharge quickly through the mill trunnion.

These Discharge Grates also incorporate as an integral part, a liner between the lifters and steel head of the ball mill to prevent wear of the mill head. By combining these parts into a single casting, repairs and maintenance are greatly simplified. The center of the grate discharge end of this mill is open to permit adding of balls or for adding water to the mill through the discharge end.

Instead of being constructed of bars cast into a frame, Grates are cast entire and have cored holes which widen toward the outside of the mill similar to the taper in grizzly bars. The grate type discharge is illustrated.

The peripheral discharge type of Ball-Rod Mill is a modification of the grate type, and is recommended where a free gravity discharge is desired. It is particularly applicable when production of too many fine particles is detrimental and a quick pass through the mill is desired, and for dry grinding.

The drawings show the arrangement of the peripheral discharge. The discharge consists of openings in the shell into which bushings with holes of the desired size are inserted. On the outside of the mill, flanges are used to attach a stationary discharge hopper to prevent pulp splash or too much dust.

The mill may be operated either as a peripheral discharge or a combination or peripheral and trunnion discharge unit, depending on the desired operating conditions. If at any time the peripheral discharge is undesirable, plugs inserted into the bushings will convert the mill to a trunnion discharge type mill.

Unless otherwise specified, a hard iron liner is furnished. This liner is made of the best grade white iron and is most serviceable for the smaller size mills where large balls are not used. Hard iron liners have a much lower first cost.

Electric steel, although more expensive than hard iron, has advantage of minimum breakage and allows final wear to thinner section. Steel liners are recommended when the mills are for export or where the source of liner replacement is at a considerable distance.

Molychrome steel has longer wearing qualities and greater strength than hard iron. Breakage is not so apt to occur during shipment, and any size ball can be charged into a mill equipped with molychrome liners.

Manganese liners for Ball-Rod Mills are the world famous AMSCO Brand, and are the best obtainable. The first cost is the highest, but in most cases the cost per ton of ore ground is the lowest. These liners contain 12 to 14% manganese.

The feed and discharge trunnions are provided with cast iron or white iron throat liners. As these parts are not subjected to impact and must only withstand abrasion, alloys are not commonly used but can be supplied.

Gears for Ball-Rod Mills drives are furnished as standard on the discharge end of the mill where they are out of the way of the classifier return, scoop feeder, or original feed. Due to convertible type construction the mills can be furnished with gears on the feed end. Gear drives are available in two alternative combinations, which are:

All pinions are properly bored, key-seated, and pressed onto the steel countershaft, which is oversize and properly keyseated for the pinion and drive pulleys or sheaves. The countershaft operates on high grade, heavy duty, nickel babbitt bearings.

Any type of drive can be furnished for Ball-Rod Mills in accordance with your requirements. Belt drives are available with pulleys either plain or equipped with friction clutch. Various V- Rope combinations can also be supplied.

The most economical drive to use up to 50 H. P., is a high starting torque motor connected to the pinion shaft by means of a flat or V-Rope drive. For larger size motors the wound rotor (slip ring) is recommended due to its low current requirement in starting up the ball mill.

Should you be operating your own power plant or have D. C. current, please specify so that there will be no confusion as to motor characteristics. If switches are to be supplied, exact voltage to be used should be given.

Even though many ores require fine grinding for maximum recovery, most ores liberate a large percentage of the minerals during the first pass through the grinding unit. Thus, if the free minerals can be immediately removed from the ball mill classifier circuit, there is little chance for overgrinding.

This is actually what has happened wherever Mineral Jigs or Unit Flotation Cells have been installed in the ball mill classifier circuit. With the installation of one or both of these machines between the ball mill and classifier, as high as 70 per cent of the free gold and sulphide minerals can be immediately removed, thus reducing grinding costs and improving over-all recovery. The advantage of this method lies in the fact that heavy and usually valuable minerals, which otherwise would be ground finer because of their faster settling in the classifier and consequent return to the grinding mill, are removed from the circuit as soon as freed. This applies particularly to gold and lead ores.

Ball-Rod Mills have heavy rolled steel plate shells which are arc welded inside and outside to the steel heads or to rolled steel flanges, depending upon the type of mill. The double welding not only gives increased structural strength, but eliminates any possibility of leakage.

Where a single or double flanged shell is used, the faces are accurately machined and drilled to template to insure perfect fit and alignment with the holes in the head. These flanges are machined with male and female joints which take the shearing stresses off the bolts.

The Ball-Rod Mill Heads are oversize in section, heavily ribbed and are cast from electric furnace steel which has a strength of approximately four times that of cast iron. The head and trunnion bearings are designed to support a mill with length double its diameter. This extra strength, besides eliminating the possibility of head breakage or other structural failure (either while in transit or while in service), imparts to Ball-Rod Mills a flexibility heretofore lacking in grinding mills. Also, for instance, if you have a 5 x 5 mill, you can add another 5 shell length and thus get double the original capacity; or any length required up to a maximum of 12 total length.

On Type A mills the steel heads are double welded to the rolled steel shell. On type B and other flanged type mills the heads are machined with male and female joints to match the shell flanges, thus taking the shearing stresses from the heavy machine bolts which connect the shell flanges to the heads.

The manhole cover is protected from wear by heavy liners. An extended lip is provided for loosening the door with a crow-bar, and lifting handles are also provided. The manhole door is furnished with suitable gaskets to prevent leakage.

The mill trunnions are carried on heavy babbitt bearings which provide ample surface to insure low bearing pressure. If at any time the normal length is doubled to obtain increased capacity, these large trunnion bearings will easily support the additional load. Trunnion bearings are of the rigid type, as the perfect alignment of the trunnion surface on Ball-Rod Mills eliminates any need for the more expensive self-aligning type of bearing.

The cap on the upper half of the trunnion bearing is provided with a shroud which extends over the drip flange of the trunnion and effectively prevents the entrance of dirt or grit. The bearing has a large space for wool waste and lubricant and this is easily accessible through a large opening which is covered to prevent dirt from getting into the bearing.Ball and socket bearings can be furnished.

Scoop Feeders for Ball-Rod Mills are made in various radius sizes. Standard scoops are made of cast iron and for the 3 size a 13 or 19 feeder is supplied, for the 4 size a 30 or 36, for the 5 a 36 or 42, and for the 6 a 42 or 48 feeder. Welded steel scoop feeders can, however, be supplied in any radius.

The correct size of feeder depends upon the size of the classifier, and the smallest feeder should be used which will permit gravity flow for closed circuit grinding between classifier and the ball or rod mill. All feeders are built with a removable wearing lip which can be easily replaced and are designed to give minimum scoop wear.

A combination drum and scoop feeder can be supplied if necessary. This feeder is made of heavy steel plate and strongly welded. These drum-scoop feeders are available in the same sizes as the cast iron feeders but can be built in any radius. Scoop liners can be furnished.

The trunnions on Ball-Rod Mills are flanged and carefully machined so that scoops are held in place by large machine bolts and not cap screws or stud bolts. The feed trunnion flange is machined with a shoulder for insuring a proper fit for the feed scoop, and the weight of the scoop is carried on this shoulder so that all strain is removed from the bolts which hold the scoop.

High carbon steel rods are recommended, hot rolled, hot sawed or sheared, to a length of 2 less than actual length of mill taken inside the liners. The initial rod charge is generally a mixture ranging from 1.5 to 3 in diameter. During operation, rod make-up is generally the maximum size. The weights per lineal foot of rods of various diameters are approximately: 1.5 to 6 lbs.; 2-10.7 lbs.; 2.5-16.7 lbs.; and 3-24 lbs.

Forged from the best high carbon manganese steel, they are of the finest quality which can be produced and give long, satisfactory service. Data on ball charges for Ball-Rod Mills are listed in Table 5. Further information regarding grinding balls is included in Table 6.

Rod Mills has a very define and narrow discharge product size range. Feeding a Rod Mill finer rocks will greatly impact its tonnage while not significantly affect its discharge product sizes. The 3.5 diameter rod of a mill, can only grind so fine.

Crushers are well understood by most. Rod and Ball Mills not so much however as their size reduction actions are hidden in the tube (mill). As for Rod Mills, the image above best expresses what is going on inside. As rocks is feed into the mill, they are crushed (pinched) by the weight of its 3.5 x 16 rods at one end while the smaller particles migrate towards the discharge end and get slightly abraded (as in a Ball Mill) on the way there.

We haveSmall Ball Mills for sale coming in at very good prices. These ball mills are relatively small, bearing mounted on a steel frame. All ball mills are sold with motor, gears, steel liners and optional grinding media charge/load.

Ball Mills or Rod Mills in a complete range of sizes up to 10 diameter x20 long, offer features of operation and convertibility to meet your exactneeds. They may be used for pulverizing and either wet or dry grindingsystems. Mills are available in both light-duty and heavy-duty constructionto meet your specific requirements.

All Mills feature electric cast steel heads and heavy rolled steelplate shells. Self-aligning main trunnion bearings on large mills are sealedand internally flood-lubricated. Replaceable mill trunnions. Pinion shaftbearings are self-aligning, roller bearing type, enclosed in dust-tightcarrier. Adjustable, single-unit soleplate under trunnion and drive pinionsfor perfect, permanent gear alignment.

Ball Mills can be supplied with either ceramic or rubber linings for wet or dry grinding, for continuous or batch type operation, in sizes from 15 x 21 to 8 x 12. High density ceramic linings of uniform hardness male possible thinner linings and greater and more effective grinding volume. Mills are shipped with liners installed.

Complete laboratory testing service, mill and air classifier engineering and proven equipment make possible a single source for your complete dry-grinding mill installation. Units available with air swept design and centrifugal classifiers or with elevators and mechanical type air classifiers. All sizes and capacities of units. Laboratory-size air classifier also available.

A special purpose batch mill designed especially for grinding and mixing involving acids and corrosive materials. No corners mean easy cleaning and choice of rubber or ceramic linings make it corrosion resistant. Shape of mill and ball segregation gives preferential grinding action for grinding and mixing of pigments and catalysts. Made in 2, 3 and 4 diameter grinding drums.

Nowadays grinding mills are almost extensively used for comminution of materials ranging from 5 mm to 40 mm (3/161 5/8) down to varying product sizes. They have vast applications within different branches of industry such as for example the ore dressing, cement, lime, porcelain and chemical industries and can be designed for continuous as well as batch grinding.

Ball mills can be used for coarse grinding as described for the rod mill. They will, however, in that application produce more fines and tramp oversize and will in any case necessitate installation of effective classification.If finer grinding is wanted two or three stage grinding is advisable as for instant primary rod mill with 75100 mm (34) rods, secondary ball mill with 2540 mm(11) balls and possibly tertiary ball mill with 20 mm () balls or cylpebs.To obtain a close size distribution in the fine range the specific surface of the grinding media should be as high as possible. Thus as small balls as possible should be used in each stage.

The principal field of rod mill usage is the preparation of products in the 5 mm0.4 mm (4 mesh to 35 mesh) range. It may sometimes be recommended also for finer grinding. Within these limits a rod mill is usually superior to and more efficient than a ball mill. The basic principle for rod grinding is reduction by line contact between rods extending the full length of the mill, resulting in selective grinding carried out on the largest particle sizes. This results in a minimum production of extreme fines or slimes and more effective grinding work as compared with a ball mill. One stage rod mill grinding is therefore suitable for preparation of feed to gravimetric ore dressing methods, certain flotation processes with slime problems and magnetic cobbing. Rod mills are frequently used as primary mills to produce suitable feed to the second grinding stage. Rod mills have usually a length/diameter ratio of at least 1.4.

Tube mills are in principle to be considered as ball mills, the basic difference being that the length/diameter ratio is greater (35). They are commonly used for surface cleaning or scrubbing action and fine grinding in open circuit.

In some cases it is suitable to use screened fractions of the material as grinding media. Such mills are usually called pebble mills, but the working principle is the same as for ball mills. As the power input is approximately directly proportional to the volume weight of the grinding media, the power input for pebble mills is correspondingly smaller than for a ball mill.

A dry process requires usually dry grinding. If the feed is wet and sticky, it is often necessary to lower the moisture content below 1 %. Grinding in front of wet processes can be done wet or dry. In dry grinding the energy consumption is higher, but the wear of linings and charge is less than for wet grinding, especially when treating highly abrasive and corrosive material. When comparing the economy of wet and dry grinding, the different costs for the entire process must be considered.

An increase in the mill speed will give a directly proportional increase in mill power but there seems to be a square proportional increase in the wear. Rod mills generally operate within the range of 6075 % of critical speed in order to avoid excessive wear and tangled rods. Ball and pebble mills are usually operated at 7085 % of critical speed. For dry grinding the speed is usually somewhat lower.

The mill lining can be made of rubber or different types of steel (manganese or Ni-hard) with liner types according to the customers requirements. For special applications we can also supply porcelain, basalt and other linings.

The mill power is approximately directly proportional to the charge volume within the normal range. When calculating a mill 40 % charge volume is generally used. In pebble and ball mills quite often charge volumes close to 50 % are used. In a pebble mill the pebble consumption ranges from 315 % and the charge has to be controlled automatically to maintain uniform power consumption.

In all cases the net energy consumption per ton (kWh/ton) must be known either from previous experience or laboratory tests before mill size can be determined. The required mill net power P kW ( = ton/hX kWh/ton) is obtained from

Trunnions of S.G. iron or steel castings with machined flange and bearing seat incl. device for dismantling the bearings. For smaller mills the heads and trunnions are sometimes made in grey cast iron.

The mills can be used either for dry or wet, rod or ball grinding. By using a separate attachment the discharge end can be changed so that the mills can be used for peripheral instead of overflow discharge.

classifieds | icmj prospecting & mining journal

classifieds | icmj prospecting & mining journal

NORTH CENTRAL WASHINGTON placer and lode opportunity. Historic mining area, some virgin ground. Proven reserves. Geological report, but no 43-101. Geologist estimates based on owners seismic testing and bore hole drilling that Billion Dollar reserves are present. Not operational. 785 total acres. 641 placer BLM, 20 lode BLM, 124 private patented. Mild climate, year-round mining opportunity. Report and data and photos available on signing of NCND. Call KIT CAVE (208)315-2255.

Near Ft. Irwin, California. Water is better than gold. 3 artesian, free flowing wells, electricity for mill site, subdivided permanent buildings are permitted. Titles and deeds clear. Call Desert Rat of 60 years. (760)267-0285. $800,000 CASH.

50+ acres private land plus 10 acres BLM lease, fully operational. Easy access. Fully permitted. Very good reserves indicated. 43-101 available, additional data available on signing a NCND. Call KIT CAVE, Consultant, (208)315-2255.

80-year-old 2nd growth timber. USFS on all sides. Live water on property (stream and spring.) Two patented lode claims, closed since 1930. 5 adits range in depth to 1,100 ft., assays, reliable data, 100,000 tons of ore on pad sites. Recent testing shows Rare Earth. Historic mining area. Data available on signing NDA. No 43-101. KIT CAVE, Northwest Territories, (208)315-2255.

(2) Twenty-acre claimsExtensive testing with actual extraction and recovery of gold. This mine has been owned for 20 years by one owner. Assays from 0.12 up to 1.0 OPT. Terms possible. Tel. (619)609-0234, or send email. Complete report available.

Yukon Territory. All under water license, 83 claims water license till 2028, 57 claims water license till 2030, reports and history, Geologist reports, roads to properties, approximately $1 million worth of equipment and infrastructure. $6.5 Million (USD) must be cashed out. Email contact information including phone number.

FOR SALETwo 20-acre placer BLM mining claims in Baker County, Oregon. Located in an established placer gold district. Established reserves at a very conservative 22,000 cubic yards at a grade of 0.58 grams (0.0186 ounces per ton). Reserves can likely be doubled by additional testing. Claims include a current Notice of Intent for sampling and bulk sampling. Excellent year-round access from maintained county road adjacent to the property. Normal operating season is April to October and often longer. Perennial stream Clarks Creek flows through the Lone Pine Claim. Mining geologist report available. $300,000. Send inquiries by email.

in prolific Getchell trend in Humboldt County, Nevada adjoins Nevada Gold Mines LLC (Barrick Gold) property. Past producer has sat idle long enough. Looking for a company that has the $ and know how to git er done and into production. Patented claims with much data available. Please reply with contact information for further data by email.

MINE 1 has 71 gold lode veins, 3 gold ore bodies, per nuclear magnetic resonance (NMR), on 265 acres. Good road access. MINE 2 has 65 gold lode veins, 1 gold ore body per NMR, on 105 acres. 200 TPD Mill equipment is included. Good road access. Mines are approximately 15 miles apart. Owner has a lot of the original mining engineer reports, maps, assays, and blocked ore. One of the best ways to own gold is to buy a significant gold mine or two ahead of potential hyperinflation!

21 Gold Placer Claims in Whitehorse Mining Division Camp and some Equipment 5 yr. Placer & Water Licenses until 2025 Land Use Permit Approval for moving equipment Geologists Report upon request

Historic steel head frame on patented land, shaft down 1,300 ft. at Tybo, Nevada. Shaft refurbished and in use by Alta Gold until 2000. Power available. Mine dump sampled by Nevada Bureau of Mines showed 29 oz. per ton silver. Sale includes adjoining 20 acre BLM mineral claim. $69,000. Owner financing. (775)901-8788 or send email.

BEST IN THE WEST! WORLD CLASS GOLD PROPERTIES! EQUITY JOINT VENTURES AVAILABLE! RICHEST PLACER & LODE ORES, CUSTOM MILLING FACILITIES. $ 8.5M+ CASH REQUIRED/P.O.F./NCND/EST. 10X INV. CAP./3-5 YRS. LIBERTY CREEK GOLD GROUP PH. (480)604-7913 OR SEND EMAIL.

Approx 2.5 million tons in Cariboo, B.C. This property is offered for mining purposes only. Title to it does not include ownership of the surface rights to use for residential or recreational purposes. Send email.

Arizona-based precious metal consultants furnishing projects for the ownership and development of quality mining and milling opportunities. Benefits include asset appreciation, cash flow from operations, and various tax benefits. We target properties that provide excellent growth potential while minimizing exposure to risk. Call (424)212-3256 or send emailto learn more.

11 ALASKA STATE 40-ACRE MINING Claims. Within 20 miles of Tok. No written production or drill data. History of mining operation including grandfathered cabin from 1984 Mining Operation permit. $45,000 OBO. Contact ZACK. (907)322-2903.

60-ACRE PLACER GOLD CLAIM IN Alleghany, CA. Located on Tertiary river deposit in the heart of the richest mining district in the State. The claim has mostly sat idle for decades and will take work to get started again, but there is great opportunity. Potential for lode discoveries as well. $37,500, willing to offer owner financing. Contact by email:

20+ ACRE, 1893 PATENTED PLACER property for sale $1.5M (subject to gold price changes), JV or possible owner finance with half down. Big bright gold. Siskiyou County, South fork of Salmon River, own both sides of river. Strong riparian rights, spring fed tailing ponds. 60x50 metal shop, 3b/2ba manufactured home. Excavator, trommel, generators, pumps, equipment, solar power phone DSL and 800x75 runway. Call or email for pictures and details. (415)971-9222; or send email.

BRAND NEW HARD ROCK MINING equipment available for immediate order, from Mt. Baker Mining and Metals. We are a USA manufacturer located in Bellingham, WA. Call us today at (360)595-4445 for more information.

3x6 Ball Mill (1TPH), complete with drive, 20hp motor, balls, frame -- $37,000 1 Ton/hr Turn-key Ore Processor, ready-to-run -- $99,500 6x10 Jaw Crusher (1-3TPH), 7.5hp 3-phase -- $8,600 10x16 Jaw Crusher (5-20TPH), 20hp 3-phase -- $16,700 Mini Mobile Gold Processor 1 Ton/hr, Honda 22hp gas -- $16,000 16x12 Hammer Mill (1TPH), 15hp, 3-phase -- $12,325 24x16 Hammer Mill (2TPH), 30hp, 3-phase -- $22,900 4x8 Shaker Table (1TPH), single phase -- $14,900

2x4 w/ 1/2 ton extra balls. In barely used condition Used briefly for gold mine research & design at the shop only, never seen production work at the mine Portable, trailer-mounted. Comes with: 15x30 long stacking conveyor 6x10 Hopper & stand frame mounted Stationary single-deck grizzly screen Lots of pictures. All the info about everything from specs to production to what uses from an expert engineer, call for details, inspection, close up pictures, shipping etc.

B-70 and B-701 Mc Englevan (MIFCO) metal melting pot furnaces with high pressure blowers. -- $9,500, each Exhaust and pouring system for B-70 MIFCO furnace consists of a 5X9 hood and 20-foot-tall chimney with 1hp fan, trolly with cantilever crucible extractor, crucible tongs and pouring table. -- $10,000 Bullion molds for silver, 50 to 500 ounce plus conical mold to separate metal and slag. -- $5,000 Chemical fume hood on stand, 4-foot-wide, with 3/16 thick safety glass front sash and exhaust fan. Excellent conditionno rust, Alberine stone working surface. We have 2. -- $2,500 each Chemical Scrubber for hood, 1,000 CFM with 50-gallon sump, circulating pump and exhaust fan. -- $2,000 Thum cell electrolytic silver refining system: 500+ ounce per day with power supply and cables. Shown in October 2018 ICMJ. Comes with electrolyte silver dissolver, crystal cleaning station, silver crystal drying oven. We have enough spare parts to make 3 cells. -- $25,000 each Olympus binocular stereo microscope Model SF-20, 30X magnification with fluorescent ring light. -- $195. OMYNO binocular boom microscope on 11-inch pole, 10-65x magnification with wide field eyepieces. Excellent for looking at large specimens. -- $395 Fiber optic illuminator for microscope -- $125 Micro sample splitter with pans, excellent for splitting gold placer. 2 each in stock. -- $95 each Laboratory Scale, Mettler AE160, capacity 75 grams, accuracy, 1/10 mg, reads 4 places to right of decimal. Professionally calibrated in May 2021. -- $1,500 Chain-o-matic Ainsworth double pan balance with set of weights. -- $1,200 12x12x12 lab drying oven. -- $500 Sweco, 4- foot diameter 3-deck sieve with 6 spare sieve. -- s$9,500 Lightnin mixers, air operated with 4 shafts and 3diameter props. -- $1,000 each

EQUIPMENT IN GOOD WORKING condition: Knelson MD30 Concentrator$18,000. 24 ga Gardner Denver mucker$6,000. (2) 24 ga 1-1/2 ton rocker dump and 1 end dump mine cars$2,000 ea. Stutenroth impact mill w/50 HP motor$6,000. GD 63 Jackleg drill$1,500. (970)560-0685 or send email.

25mm OD core drill comes with backpack, Shaw gas-powered engine drill, coupling, diamond drill bit, loose materials bit, core cutter, 2 compression tanks, core breaker, knockout rod, barrel adapter, T-handle, aluminum gas can and 20 feet of drill steel. Excellent condition. Asking $2,800, includes delivery in the USA. UNION GULF RESOURCES, CORP. Send email or call (619)609-0234.

FOR SALE15 TON GIBSON ROD MILL, w/roll. Mint. Jaw, conveyor, feeder, classifier (2) table. Send $8. 14 pages, pictures, W.W. Gibson instructions. OREGON MINE SERVICE, PO Box 205, Sumpter, OR 97877. $15,000 Firm.

RETIRING. SELLING PROVEN, successful 11-year-old business designing, building and selling Trademarked gold and precious metals refining kilns. Countless untapped markets, huge potential for expansion. Go global, take this to the next level. www.goldkilnsusa.com for product videos. (928)634-3455.

Owner selling due to health condition. Located east of Grass Valley by town of Washington, CA. $3,600 OBO. Make offer. Contact SAM BALDWIN, Harrington & Baldwin Mining Equipment Supply,470 E Main St. Grass Valley, CA 95945.

Offering 100 acres of remote Arizona desertuntouched dry river creeks & benches filled with tiny gold nuggets. There is literally gold to be found anywhere the shovel dropspossibly the best placer gold mining in the entire area. The purchase price of $965,000 includes loader backhoe, high quality Goldfield brand vibrating hopper/grizzly/trommel, dump truck, water pumps, generators, etc. If interested, call LAURA or STEVE at: (480)296-3773.

Buy these (46) forty-acre Alaska State Mining Claims northwest of Fairbanks. 1,840 acres total with only 10 acres mined. There is road access and plenty of water. All equipment and trommel included plus cabins. Geologist report reflects material ran $10.50 per yd. in 1983 at $350 an ounce. Permits are in place. Price reduced, for sale or lease $4 million. (970)629-8637.

One that you do not want to sell that should be operating and in production or a mine that you need help to operate. I have 34 years of mining experience. Please contact me by emailif this is of interest.

ORO INDUSTRIES TROMMEL and Centrifuge. Trommel is 24 diameter by 20 long, 10HP electric drive with Browning gearbox. 25 - 30 YPH. Centrifuge is 20 diameter with 3HP electric motor with 15 YPH production rate. Call (307)922-4754, MATT.

DENVER 5x4 SRL PUMP, 25 HP; Galigher 2 rubber-lined sump pump; 48 Sweco screen; Denver #12 drives/ 48 Dorr Oliver thickener mechanism; (2) 100 amp SS shut off boxes. MILLER EQUIPMENT, Tel: (865)475-7977, or send email.

Located SE of Fairbanks. 16 (40-acre) state placer mining claims. Includes heavy equipment in excellent condition, 4 Conex boxes full of tools, Cat parts and gold cleaning equipment. CRAIG (608)343-9973.

Consists of the Eureka & Donaldson Placer claims, located in eastern Oregon. Approx. 30 patented acres. Cracker Creek runs through entire length of property. Estimated 1.3 mil yards of pay available to be mined. Owners selling the full operation (land and equipment). Price & terms negotiable. Contact RUSS (701)580-1554. Serious inquiries only please.

A hydraulic operation from 1882-1912, using antiquated methods recovered 3 million yards at .01 from a 3-mile section of a Tertiary river channel. 44 million yards remain in main channel plus 40-50 million potential in side channels and redisposition deposits. A large basic dike intersects the gold channel and forms its base for a mile. It contains strategic metals and rare earths, plus enough scandium to make it valuable.

Cleveland and Cleveland Extension mining claims in Inyo County, California. Adits to 800 length. 10 -12 principal veins in granite and quartz monzonite. Accessed mines in 2wd dually last month, but 4wd recommended. Thousands of tons of tailings to reprocess. Huge potential for persons with hard rock experience. Im only selling because Im permitting a placer operation in Nevada and cant split my focus. For more info, go to: mindat.org Go to California/ Inyo County/ Owens Valley/ Fish springs (Tinemaha mining district) click on Cleveland Mine. Asking $35,000 or consider offer, trade for 4x4 4-door pickup, small mining equipment, small excavator, tractor/ loader etc. Also have lode claim in San Bernardino Co. for $5,000 and many placer claims in Imlay, Nevada, Barber Canyon, Rock Hill area. For maps, pics and info call (814)688-4965.

CHASE, ALASKA802 ACRES OF patented placer claims and 80-acre lot with airstrip. Future potential wildlife wilderness eco development reserve. Ample water. Permits required. No royalties. $1,200,000 Send email or call(907)562-3382. Call, Text, Zoom.

With recent dramatic increases in gold prices, there is no better time for accredited U.S. investors to move investment capital into Alaskan precious metals and gemstone mining projects as a hedge against U.S. and global financial market uncertainties. Seeking U.S. buyers, investors or large-scale miners for our lode, placer and open pit gold, copper and gemstone mining projects in Alaska. For complete information contact: ANN ELLIS, (907)521-6480, [email protected] or TED STINSON, (907)382-1751 [email protected]

Approximately 360 acres of Placer mining claims (2-160 acre claims) for sale just a few miles from Goldfield, Nevada. Average value from many assays over the past 15 years is +.12 ounce gold per ton, also tellurides on the property. Asking $250,000 terms available or trade for Fee Simple property, equipment, motorhome, ore concentrates, etc. Reply by email for information and location. UNION GULF RESOURCES, CORP. (619)609-0234.

FOR SALE: 3 Contiguous Patented Placer Gold Claims (59.92 acres)$700,000. Equipment sold separately. A few miles south of Lake Almanor, CA. Feather River runs through the middle of the property. Owner will consider 2-year MINING LEASE OR TRADE for property in Washington, Oregon or So. California.

(3) 40-Acre state placer claims in the Upper Cache Creek Basin. Good access. Active mining adjacent. Good water. Easy to permit. High potential placer site for very reasonable. $24,000 for all. Call/txt (208)304-7483.

CLAIMS FOR SALEFour contiguous gold placer claims in Historic Ophir Gulch, Greaterville, AZ. Total of 120 acres within Coronado National Forest on east flank of Santa Rita Mountains, 45 miles south of Tucson, AZ. Excellent access, camping and ATV trails. LUMP SUM. $12,000. DAVE TAYLOR (314)808-5858.

Powered by JCB200 Excavator with 400 Link Belt Undercarriage. 100YPH Gold Watch Project washplant. 5 cylinder Duetz water pump. 24x8 container included with extra parts & supplies. Setup to work on land or ocean. Located in Nome, AK. Ready to work. Pictures available. $139,000 $79,000. Call ARNE BELSBY, send email or call(509)979-8265.

PERFECT FOR MINING CAMPSNew Remote Septic Systems. A 40- and an 80-person per day septic system. Coast Guard approved. One works on ultraviolet light, one on chlorine. $90,000 new; now $12,000 each. (907)235-8975.

Closely held property ownership. Proven mineral reserves. Onsite plant commissioned/operational. Seeking lessor/developer/operator to assume immediate hands-on site operation. Investment and/or sweat equity ownership stake available. Contact by email or call(408)313-1595.

230 Acres on Solomon River, 35 miles from Nome, which have been entirely dredged upstream. These claims begin where dredging stopped. $485,000. 20 to 25 ft. deep. Abuts the Nome-to-Council Road at Mile Post 35. Mining engineers report states possibility of 20,000 to 40,000 oz. of gold. A 4 diameter diesel-powered trommel is available for $20,000. (907)235-8975.

EQUIP. SETUP FOR REMOTE MINE-MOUTH, NO POWER, OPS. Complete Assembly consisting of: M35A2 multi-fuel Army truck w/ mounted 10x16 rebuilt Austin-Western crusher (driven by new 50 HP Kohler gas motor). Crusher discharges to new vibratory overs/unders classifier. Unders supplies used Kamflex elevator discharging to new Stutenroth 2 tph impact mill w/ new 18 hp clutched Honda gas motor. Mill discharges to new vibratory variable speed classifier. All equip. has approx. 12 hrs. use. $34,000 OBO. If not sold by 10/31/21, equipment will be parted out & sold separately. (208)521-3649, leave a message or send email.

40-YEAR EXPERIENCED MINING Consultant for hireProperty evaluation, permitting, safety and environmental regulations, blasting, narrow vein underground mining and processing. Have Niton XL5 XRF for field and lab analysis of 52 elements. Willing to travel. CRAIG LIUKKO (970)560-0685 or send email.

WE ARE LOOKING FOR TAILINGS, PRECIOUS METAL ORES & TOLL RUN to Process in our Nevada Facility In-House LaboratoryAA, ICP, XRF & Fire Assays Do you know anyone who could use our Help or needs Funding or a Joint Venture Partner? Call Today (302)381-2772.

PRECIOUS METALS TESTING and 30+ elements tested by ICP-MS, the most sensitive technique. ISO/IEC 17025:2017 laboratory accredited. Microwave digestion method. LONE PINE ANALYTICAL, Phoenix, AZ. Dr. David Luttrull, (480)797-3353; or send email.

With recent dramatic increases in gold prices there is no better time for accredited U.S. Investors to move investment capital into proven large-scale Alaskan precious metals mining projects as a hedge against US and global financial market uncertainties. Seeking U.S. buyers, investors or large scale miners for our lode, placer and open pit gold and copper mining projects in Alaska. For complete information contact: ANN ELLIS, (907)521-6480, [email protected] or PAUL TORGERSON, [email protected]

COMPLETE PLACER PLANT OPERATION in Arizona. Buy Any or All. Very Low Hours: Rock Systems feeder/hopper/grizzly/conveyer$30,000. Goldlands 50 YPH trommel$35,000. 6 Pump$5,000. Yukon Sluice$3,000. Goldlands sizing separator$9,000. MSI Water Clarification Unit$175,000. MSI Exit Conveyor $7,000. U-Tech Finishing Table$1,900. 4 Honda Pumps$4,000 ea. Power Panel$10,000. 75KW Generator$22,000. Cargo Trailer with tools etc.$8,000. Goldlands Spiral Separator$2,500. Much more: tools, generators, water tank, diesel tank, welding etc. Send email.

WHAT WILL YOU DISCOVER? Gold Mining & Rock Hounding 365 days a year in Arizona Good Access Gold Mining Claims for sale an hour from Phoenix and Prescott in the Weaver Mountains near Wickenburg, Congress, Stanton, and Yarnell. From casual prospecting up to commercial mining operations. Credit Cards Accepted. Call (928)HAS-GOLD (928)427-4653 www.ArizonaMiningClaims.com

With recent dramatic increases in gold prices there is no better time for accredited U.S. Investors to move investment capital into proven large-scale Alaskan precious metals mining projects as a hedge against US and global financial market uncertainties. Seeking U.S. buyers/investors for our Kahiltna Placer Gold Mine Project southwest of Talkeetna, Alaska. The resource is estimated at up to 174,000 ounces gold in 6 million cubic yards. Production cost is estimated at $485 per troy ounce of gold. Dividend distributions can be paid in cash or gold. Contact: ANN ELLIS (907)521-6480, [email protected] or TED STINSON (907)382-1710, [email protected]

Southwestern OR$400,000. 3/4 sq. mi.(475 acres) under Placer Claim. 20 acres under Lode Claim. 6 major en echelon quartz fissures. Excellent production history. 3 established lode mines with free-milling ore (that weve located). Some ore out of 2nd level mine over 100 OPT in some bodies. One known pocket extraction in order of 90 lbs. in 1905. 1/4 mi. of premier mining creek access. 1,200 sq. ft. (approx.) house with open well. 3-level mill building w/ore hopper. Closed circuit pilot mill4 tons per day. Electric line power onto property. Claim in moderate, mixed conifer timber. 1/4 mile from paved road. 12 miles from services on paved highway. Contact: BILL by email.

https://www.icmj.com/magazine/article/mud-creek-placer-mine-adventure-1614/ A WORLD-CLASS POTENTIAL PLACER GOLD DEPOSIT backed by authentic, verifiable, geological reports showing 73,000 PROVEN, mineable ounces of gold reserves and with the POTENTIAL reserves evaluated at 2.8 MILLION OUNCES of recoverable gold in the over 2,000-acre AK state claim block, located 140 air miles NE of Nome, at Candle, AK. Offering significant ROI for seed capital, lease, with advance on royalties, joint venture or outright sale. $3,285,000. Principles only please. Send email.

For SaleGold Property Eastern San Bernardino County, Calif. 4 Patented and 37 unpatented claims. Significant indicated gold resource with additional potential. Contact: MR. RICHARD VOIT For details go to: www.TheAmericaMine.com

FOR SALE: 4x3 Denver SRL pump, 7.5 HP; 5x4 Denver SRL pump, 25 HP; 2 Galigher rubber-lined pump 5HP; 48 Sweco SD screen, Denver #12 drives, 48 Dorr Oliver thickener mechanism; (2) 100 amp SS shut off boxes. MILLER EQUIPMENT, Tel: (865)475-7977or send email.

185 miles from Fairbanks. Price option without equipment$125K. Also available: D-7G Cat Dozer, Insley 1000 Excavator. Variable price options on the equipment. For more information, contact ROB GOREHAM (49er Mining Supplies) at (209)588-1635 or send email.

RADIANT EXPLORATION, INC. Mineral Exploration Mapping Services Remote Exploration via Nuclear Magnetic Resonance (NMR) and Satellite Imagery Detection Capabilities for the Location and Depth of any Precious or Base Metal Lode and Placer Experience FastAccurateVery Affordable Small Surveys Welcomed Contact: MONTY GEORGE (303)905-1680 or send email. www.radiantexploration.com

+40 years of domestic/international experience. Exploration > Evaluation > Permitting > Mining > Recovery > Sales. Hard rock or placer. Extensive references list. Reasonable rates. Dont mine w/out consulting a professional. Call Charles Watson (530)258-4228. Helping you make better decisions.

I am an experienced Arizona prospector who is retired and would like to help and teach new miners. I will help you find, stake and file your own claim. I know where there is open BLM ground that is good for placer and lode mining. I will take you into the mountains to test and help you file a claim. I can use my equipment or yours. In Arizona, you dredge differently because of less water. Why buy an existing claim at inflated prices when I can help you find your own unclaimed land that is just as good or better for a fraction of the cost. I can also teach you how to do research work and testing so you dont get scammed by unscrupulous claim sellers. Please call DENNIS (602)565-6561 or send email.

NOME 10-inch suction dredge Dola Mae 50-foot catamaran, (2) new 115 HP Yamaha 4-stroke engs. 5.9 Cummins diesel, 6X8 Berkeley water pump, new 6212 Garmin GPS. 16-wheel trailer. Sleeping quarters. $155K Send email or call WES (928)710-8404.

ORE ANALYSIS X-Ray Spectrometer & Fire Assays Fast Service, Prices Include Sample Preparation Free Price List or see our website at: http://www.reedlab.altervista.org/ Reed Laboratories, 3355 Lincoln St., Carlsbad, CA 92008

Koyukuk Mining District with grandfather rights. Access by road, airstrip, winter trail. Proven placer ground. Fines to large nuggets. Health issues encourage retirement. Serious offers will be considered. (907)388-6769,

TCB International LLC is currently accepting new customers for the processing of precious metals through leaching of concentrates and head ore. Located in Phoenix, AZ. For more information visit us at: www.tcbinter.com or contact us via email.

WANTED: WET DRUM MAGNETIC SEPARATORS in operating condition with feed tanksCASH BUYER FOR SALE: Deister 999 triple table in 40 trailer with sand screw & controls, very good condition for sale. LARRY (602)377-3774 Call or send email.

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