ball mill machine for sale - ftm machinery
The ball mill is a milling equipment used to grind various materials and produce ore pulp, which uses steel balls as the grinding medium. According to different grinding methods, ball mill can be divided into the dry and wet ways. In general, we adopt the wet grinding method for the ore dressing.
The ball mill equipment developed by FTM Machinery is a grinding machine, which uses steel balls as the grinding medium. And the ball mill grinder is mainly used for grinding cement, silicate products, new building materials, refractory materials, fertilizers, various ores and glass ceramics, etc. Besides, it is widely used in industries such as ore dressing, building materials, and chemicals. According to different grinding methods, the grinding process can be divided into dry and wet ways. In general, the minerers usually adopt the wet grinding method for the ore dressing.
The ball mill machine can grind many kinds of materials like limestone, diabase, calcium carbonate, quartz stone, iron ore, copper ore, gold ore, grindable materials, non-metallic ore, non-flammable and explosive materials.
Ball mills sold by Fote Machinery manufacturer are unique in the following aspects. The product ball mill grinding enjoys the feature of fine discharging size and it has the following advantages like easy to use and operate, has high working capacity, simple operation, and reliable performance.
According to the material and discharging methods, the FTM Machinery dry ball mill and the wet ball mill can be the best choices, because they both have good abrasion resistance, large crushing ratio, superior technology, the national processing standard, high processing precision, and good quality.
The wearing parts of the ball mill grinding mainly refer to the liner. The wear and service life of ball mill liners are related to the cost and production effect of the ball mill equipment. Then, how to distinguish the The pros and cons of the ball mill ceramic liner? First, look at the casting and smelting process of ball mill liners. Secondly, whether the quenching and tempering treatment of lining is qualified, and finally is the material of the lining.
At present, common materials of ball mill liners on the market are high chromium cast iron, low alloy wear resistant cast steel, high manganese steel materials, etc. These three kinds of liners have good wear resistance.
Ball mill is one of the most imporatant machines in ore derssing plant. it can be used to process many materials including gold, copper, granite, quartz, pebble, limestones, etc. The final product of the gold ball mill is ieal and also always can be use on cosmetic.According to the actual grinding materials, China FTM equips the ball mill with suitable grinding media and changes traditional surface contact to line contact, so that the discharging size is more even and the yield is higher. We know the grinding methods of ball mill, then how does a ball mill work? Here is the introdoction.
Firstly, the materials enter the first chamber of the mill uniformly through the hollow shaft of the feeder. The ball mill liners have different kinds of steel balls. When the cylinder rotates, the FTM Machinery ball mill brings the materials and the balls to a certain height and then let them fall.After continuous impact on materials and balls, the materials are ground roughly in the first chamber.
Secondly, the materials enter the second chamber through a single-layer compartment board. And the chamber is lined with a flat lining plate, some steel balls inside, then Fote Machinery ball mill is grinding these materials further. Finally, the materials are ground into a fine powder.
We all know that the ball mill is just the general terms of the different types of ball mill machine. It is mainly divided into the two knids: ball-type mill and rod-type ball mill.The ball mill and the rod mill are widely used in the dressing plant,then how to distinguish them?
The working principle is basically the same. Regardless of the ball mill or the rod mill, when the cylinder rotates, the grinding media (ball or rod) installed in the cylinder body are lifted to a certain height, and then they are thrown at a certain linear velocity, so the grinding media causes some impact and crunch to materials of the cylinder body. Finally, the grinding work is finished.
Grinding media: The grinding media inside the cylinder are different. The ball mill media is the ball mill balls. The grinding media of rod mill is a steel section, and the ceramic ball mill is the ceramic ball, as is shown in the following picture.
Appearance ratio: Rod mill, whose appearance is the same as that of the industrial ball mill. The difference is that the ratios of cylinder shape are different. For example, the length ratio of the rod mill to the diameter is generally 1.5-2.0, and the inside lining plate on the end cap is the vertical plane. The length ratio of the barrel to the diameter of the ball mill is small, and in most cases, the ratio is only slightly greater than 1.
Among these ball mills, the most commonly used ball mills are lattice-type ball mill and overflow-type ball mill (named from the different discharging structure). While the rod mill does not use a grid plate for discharging, there are only two kinds: overflow-type and open-type. And the diameter of the hollow shaft in the discharging end is generally larger than that of a ball mill with the same specification.
Performance analysis: The characteristics of the rod mill are that the product is rough, but the particle size is even, and the coarse particles and the slime are little. Therefore, when the rod mill is working, the finished products are relatively light. Characteristic of the particle size is related to the condition of the rod-grinding ore. At the same time, the performance characteristics of ball mill are large production capacity, strong adaptability to materials, high fineness of materials and fine grain size. Besides, the ball mill is easy to grind finely, and significant in energy-saving, but the over-grinding phenomenon is serious.
We have a customer called Mike Reynolds, in beaver Utah. And he has some dump material at his mine called horseshoe. Because the dump materials do not have high enough grade to get a good recovery, Mike called them as tailing. However, silver and gold metals are still inside and he wants to process the tailings into concentrates again.
This process is simple, by taking sand tailings into a feeder hopper, then relying to a conveyor belt. On the bottom of the feeder, there is a machine that can adjust the amount of sand thats going onto the belt, so he knows exactly how much material fed into the mill site per hour and it can be adjusted accordingly if needing to go faster or slower.
After the conveyor belt, sand tailings will going to the ball mill machine, which is a big drum that has steel balls inside about three-quarter-inch around. And every time when drums going around, milling balls fall on top of tailings and crush them into a finer mesh and liberates the metal from the rest tailings.
After the tailing goes through the ball milling machine, it is fed into the machine called shaking table. There are three tables stacked on tope of each other. They are approximately 8 feet by 20 feet, 17 feet high. The tables are used for gravity separation, no chemicals used here, shaking forth and back. Because the weight of gold metal is heavier than the weight of sand, sand waste will be one direction, the heavy metals go to the other direction. At the end, the heavy metals are trapped as concentrates.
As one of the well-known ball mill manufacturers in China, FTM Machinery has always been adhering to the purpose of integrity-basis and quality-first, and striving to build the most advanced ore dressing equipment in China. We not only have industrial ball mill, but also manufacture the small ball mill. The small ball mill in our ball mill grinding factory is also for sale in South Africa, zimbabwe, india, philippines, etc. If you want to grind limestone or other materials with small capacity, the small ball mill is prepared for you. We sincerely welcome friends at home and abroad to come and choose the equipment you want.
china gold mining machine, gold mining machine manufacturers, suppliers, price
China manufacturing industries are full of strong and consistent exporters. We are here to bring together China factories that supply manufacturing systems and machinery that are used by processing industries including but not limited to: mining equipment, gold mining equipment, mining machine. Here we are going to show you some of the process equipments for sale that featured by our reliable suppliers and manufacturers, such as Gold Mining Machine. We will do everything we can just to keep every buyer updated with this highly competitive industry & factory and its latest trends. Whether you are for group or individual sourcing, we will provide you with the latest technology and the comprehensive data of Chinese suppliers like Gold Mining Machine factory list to enhance your sourcing performance in the business line of manufacturing & processing machinery.
using ball mills to extract raw gold from ores
Placer mining and lode mining are very different. Whereas placer gold has been released from within the rock and is generally free from any significant matrix, lode gold presents different challenges. While gold may be present in ore, it must somehow be released for proper extraction.
As a result, a number of machines have been invented to bring about maximum results with regard to obtaining the much needed resource, gold. One of such equipment is the ball mill. Below is the write-up of how a ball mill works, is used to crush ore and an explanation regarding its effectiveness in gold mining.
First of all, in order to get the best out of how this particular equipment is used it is important to get acquainted with knowledge on what it is, and is made of. Hence, a mill is a piece of equipment used to grind ores. Its major purpose is to perform the grinding and blending of rocks and ores to release any free-gold that is contained within them.
At major mines, the mill was the critical equipment that was required to process the ores that were extracted from deep underground. Many early mines used stamp mills, but many operations today find that ball mills are more functional for smaller operations and perform well with the modern equipment we have available now such as combustion engines.
To perform its functions, the ball mill operates on the principle of impact and attrition. This principle entails that the balls are dropped from near the top of the shell in order to bring about size reduction impact.
The major components of the ball mill include a shell that is hollow and is suspended on its axis to bring about rotation. The axis of the shell can be suspended horizontally or at an angle to the horizontal.
The shell is filled with quite few, but reasonable amount of balls which do the grinding process, and can be made of steel such as chrome steel and stainless steel. They can also be made of ceramic or rubber depending on their targeted material to be ground.
Its major operations are categorized into two, namely the dry and wet processes. Through those processes the machine is able to perform its functions of grinding the crushed materials. One of such functions, is that which is witnessed when grinding different types of ore, such as gold ore.
Now here is what one must know with regard to how the ball mill operates. The drum of the mill (shell) is suspended on two self-aligned rollers. Then the material to be worked on is loaded through the hopper.
From there, the mill is driven using a motor with a clutch, gearbox and the flexible coupling. The mill is then lifted to a certain level of height as it rotates. It is from that height that the balls begin to freely fall or roll down in order to grind the material that has been loaded.
After the material is ground, it is then removed from the mill depending on the discharge method used on the machine. For example, there are center unloading mills as well as unloading through the grille mills.
For the center unloading mills, the ground material is discharged through a hollow unloading trunnion using a free sink. To make it more efficient the pulp level in the drum should at least be above the level of the lower generating trunnion for unloading.
On the other hand, mills whose unloading is done using the grid consist of a lifting device which helps to unload the crushed material. For this reason, in such a mill the slurry level is likely to be lower compared to the unlading trunnion level. In such a mill, a grid with openings used for unloading crushed material is located in the unloading end of the drum.
To crush the gold ore in order to obtain pure gold, the large ore of gold is fed into a jaw crusher or mobile jaw crusher for the primary crushing process. The crushing process acts as a medium of screening the fine gold ore. It is then sieved using the vibrating screen and later sent through the use of a conveyer belt.
The ore is sent into a single-cylinder hydraulic cone crusher for the secondary crushing. Thereafter, the gold ore is transferred to a multi-cylinder hydraulic cone crusher, where the ore is crushed further into finer material. From there, the crushed gold ore is sent to a ball mill, evenly as it passes through a vibrating screen for grinding.
From the ball mill, the gold ore powder is subjected to the process known as beneficiation for further crushing before classification and floatation processes. Most commonly, professional mining operations will use a shaker table at this point. These are extremely effective at capturing tiny particles of free-gold that has been released from the ores.
leaching tank, electric separator products from china manufacturers - jiangxi hengchang mining machinery manufacturing co., ltd. - page 1
Jaw Crusher, Ball Mill, Shaking Table manufacturer / supplier in China, offering High Efficient Gold Recovery Machine Alluvial and Placer Gold Mining Equipment Sand Gold Separation Recovery Plant, 1 Ton Ball Mill for Rock Gold Mining Grinding Plant 900 X 1800 Ball Mill for Gold Grinding Plant, Factory Price Grinding Process Stone Gold Ore Ball Mill Rock Stone Gold Grinder Ball Mill Grinding and so on.
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China manufacturing industries are full of strong and consistent exporters. We are here to bring together China factories that supply manufacturing systems and machinery that are used by processing industries including but not limited to: ball mill, grinding machine, grinding mill. Here we are going to show you some of the process equipments for sale that featured by our reliable suppliers and manufacturers, such as Gold Ore Ball Mill. We will do everything we can just to keep every buyer updated with this highly competitive industry & factory and its latest trends. Whether you are for group or individual sourcing, we will provide you with the latest technology and the comprehensive data of Chinese suppliers like Gold Ore Ball Mill factory list to enhance your sourcing performance in the business line of manufacturing & processing machinery.
china mining equipments manufacturer, minerals processing equipments, crushing machine supplier - gongyi hengchang metallurgical building material equipments plant
Mining Equipments, Crushing Machine, Drying Machine manufacturer / supplier in China, offering PE/Pex Series 200 Tph Stone Jaw Crusher Machine, Multi-Layer Carbon Steel Aggregate River Stone Screen, Small Mini Jaw Crusher PE150*250 and so on.
Gongyi Hengchang Metallurgical Building Material Equipments plant is a professional manufacturer of complete set mineral beneficiation equipments, Briquette equipments, coal preparation equipments, ball press equipments, products widely used in mineral processing, metallurgy, building materials, chemicals, electricity, petroleum, coal, transportation, fertilizer, gas industry etc. In the last two decades, we always persist on the philosophy of "scientific and technological innovation, quality first, ...
china ball mill machine, ball mill machine manufacturers, suppliers, price
China manufacturing industries are full of strong and consistent exporters. We are here to bring together China factories that supply manufacturing systems and machinery that are used by processing industries including but not limited to: ball mill, grinding machine, grinding mill. Here we are going to show you some of the process equipments for sale that featured by our reliable suppliers and manufacturers, such as Ball Mill Machine. We will do everything we can just to keep every buyer updated with this highly competitive industry & factory and its latest trends. Whether you are for group or individual sourcing, we will provide you with the latest technology and the comprehensive data of Chinese suppliers like Ball Mill Machine factory list to enhance your sourcing performance in the business line of manufacturing & processing machinery.
gold ore processing plant manufacturer gold mining equipment
This small scale rock gold processing plant is suitable for 1-2 tph capacity.It will include a jaw crusher, a hammer mill, a ball mill and 1-2 sets of shaking tables. Except these machines, you can also add a 8-10 meters belt conveyor and make a hopper with grizzly bars. It will help you to feed the ores by the load vehicle. Contact Us to get more details of this processing plant.
1. The 1st step Crushing. The Raw rock minerals will be fed into the crushers to get the discharge size less then 25mm. Usually it will need 2 crushers, the primary crusher is for cutting down the big size of rocks, and the second crushers is for getting the size of -25mm.
2. The 2nd step Grinding. The grinding machine will be ball mill or wet pan mill. If you need to grind the minerals without waters, then you should choose ball mill. The ball mill has a grinding rotary drum, there are liners inside of the drum. Usually the liners are manganese steel liners, some times, the customers ask the liners can be corrosion resistant, so we will make ceramic liners and rubber liners. The discharge size from the ball mill will be around 200 mesh. It will make a good performance for the mineral particle separators by gravity separators or flotation machines.
3. The 3rd step Separating. The discharge from the grinding machines will be in the size of 0-2mm. Most gravity separators can do a good work for separating the concentrate from the ores. It includes the shaking tables, centrifugal concentrators, jigger machines and spiral chutes. Sometime, we do also choose the flotation machines to get the concentrate mud. It depends on the ores situations.
Due to the size,shape and specific gravity of alluvial gold, the most effecient method is using washing plant. It always includes a trommel screen, vibrating sluice boxes, a centrifugal concentrator and shaking tabls. If the alluvial gold with very sticky clay, then the trommel screen should be changed into a rotary scrubber with a trommel screen.
We have more than 25 years experience, and the machines are sold to all over the world. Our engineers can go to your local mining site for leading the processing plant installation and train your staffs.
ball mill for sale | grinding machine - jxsc mining
Ball mill is the key equipment for grinding materials. those grinding mills are widely used in the mining process, and it has a wide range of usage in grinding mineral or material into fine powder, such as gold, ironzinc ore, copper, etc.
JXSC Mining produce reliable effective ball mill for long life and minimum maintenance, incorporate many of the qualities which have made us being professional in the mineral processing industry since 1985. Various types of ball mill designs are available to suit different applications. These could include but not be restricted to coal mining grate discharge, dry type grinding, wet mineral grinding, high-temperature milling operations, stone & pebble milling.
A ball mill grinds ores to an end product size of thirty-five mesh or finer.
The feeding material to a ball mill is treated by:
Single or multistage crushing and screening
Crushing, screening, and/or rod milling
Primary crushing and autogenous/semi-autogenous grinding.
Normal feed sizes:
eighty percent of six millimeters or finer for hard rocker
eighty percent of twenty-five millimeters or finer for fragile rocks (Larger feed sizes can be tolerated depending on the requirements).
The ratio of machine length to the cylinder diameter of cylindrical type ball mills range from one to three through three to one. When the length to diameter ratio is two to one or even bigger, we should better choose the mill of a Tube Mill.
Grinding circuit design
Grinding circuit design is available, we experienced engineers expect the chance to help you with ore material grinding mill plant of grinding circuit design, installation, operation, and optimization.
The automatic operation has the advantage of saving energy consumption, grinding media, and reducing body liner wear while increasing grinding capacity. In addition, by using a software system to control the ore grinding process meet the requirements of different ore milling task.
The ball mill is a typical material grinder machine which widely used in the mineral processing plant, ball mill performs well in different material conditions either wet type grinding or dry type, and to grind the ores to a fine size.
Main ball mill components: cylinder, motor drive, grinding medium, shaft. The cylinder cavity is partial filling with the material to be ground and the metal grinding balls. When the large cylinder rotating and creating centrifugal force, the inner metal grinding mediums will be lifted to the predetermined height and then fall, the rock material will be ground under the gravity force and squeeze force of moving mediums. Feed material to be ground enters the cylinder through a hopper feeder on one end and after being crushed by the grinding medium is discharged at the other end.
Mining Equipment Manufacturers, Our Main Products: Gold Trommel, Gold Wash Plant, Dense Media Separation System, CIP, CIL, Ball Mill, Trommel Scrubber, Shaker Table, Jig Concentrator, Spiral Separator, Slurry Pump, Trommel Screen.