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magnetic separation equipment for wolframite

differences and applications of magnetic separation and froth flotation | fote machinery

differences and applications of magnetic separation and froth flotation | fote machinery

The magnetic separator is the key beneficiation equipment for separating magnetic minerals from non-magnetic minerals or minerals with magnetic differences. The process is based on the different components in the separated materials, which means that in the working magnetic field, the different magnetic field forces and other forces received by different particles are used to separate different materials.

Froth flotation machine is generally used for the concentration of sulphide ores. The principle behind froth flotation process is that sulphide ores are preferentially wetted by pine oil whereas gangue articles are wetted by water.

In this process, the suspension of a powdered ore is made with water. Collectors like pine oil, fatty acids and xanthate are added to it. Froth stabilizers like wrestles and any line stabilized the froth. The mineral particles become wet by oils while gangue particles by water.

A rotating paddle agitates the mixture and draws air in it, as a result, froth is formed which carries the mineral particles. The froth is light and skimmed off, and it is then dried for the recovery of the old particles.

In order to realize the separation of different minerals through magnetic separation, it is necessary to ensure that there is a relatively obvious difference in force between different magnetic materials, especially the difference in magnetic field force.

Minerals in nature, due to their different atomic structures, exhibit different magnetic properties under the action of a magnetic field, and different minerals exhibit large magnetic differences.

Minerals are divided into non-magnetic minerals, weak magnetic minerals and strong magnetic minerals. Among them, strong magnetic minerals are the least. There are dozens of weak magnetic minerals, while non-magnetic minerals are numerous in variety.

Of course, the strength of magnetism between minerals is relative, and it is relative to the strength of the external magnetic field. With the development of magnetic separation technology and magnetic material technology, its definition has always changed.

After crushing to less than 70 mm, the ore need to be washed, sieved and classified, firstly got material with + 30 mm needs manual beneficiation, then 4.5-30 mm ore is dressed by jig, and last ore with -4.5 mm should be processed by roller-type strong magnetic field magnetic separator.

Wolfram ore coarse concentrate magnetic separation process: before separation, the material is crushed to-3 mm by roll crushers, then they are screened into three levels which are 0.83 ~ 3 mm, 0.2 ~ 0.83 mm and 0 ~ 0.2 mm, and finally you can get wolframite concentrate by magnetic classification beneficiation.

Crystalline graphite has good natural floatability, so froth flotation would be best for processing it. Since the size of graphite flakes is one of its most important quality indicators, a multi-stage grinding and multi-beneficiation process is adopted to remove large flake graphite as soon as possible.

Copper is the main valuable recyclable element in ore, and its content is 0.77%. Copper ore contains lightly oxidized sulfide ore, and the copper in the ore is mainly in copper sulfide minerals. For copper ore, there is 0.45% of primary copper sulfide, accounting for 60.57% of the total copper; secondary copper sulfide 0.27%, accounting for the total copper 36.34%; free copper oxide and combined copper content is relatively less.

The recoverable copper in the ore is mainly stored in chalcopyrite, chalcocite and a small amount of copper-bearing sulfide minerals such as copper blue and azurite, with a copper content of about 1.72%.

Fote Company is a manufacturer of a variety of mineral processing equipment, with 40 years of research and development experience and is committed to producing the most advanced mineral processing equipment.

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.

the magnetic declination angle of wolframite wet ptms magnetic separator can be adjusted in the range of 5-25 - news - foshan powtech technology company limited

the magnetic declination angle of wolframite wet ptms magnetic separator can be adjusted in the range of 5-25 - news - foshan powtech technology company limited

Wolframite wet PTMS magnetic separator products and function of wolframite is the key to producing tungsten ore, the key to manufacturing various production and processing of tungsten products, wolframite need after mill production can refine effectively minerals, in the concentrator of wolframite manufacturing, wolframite wet PTMS magnetic separator is one of the necessary equipment.

1, wolframite wet magnetic separator is a professional for wolframite unique characteristics and product research and development of a dry magnetic separator mine machinery equipment, can be used to separate 0 ~ 6 mm granule with magnetic minerals. According to the single cylinder of rare earth permanent magnet drum type iron removal, strong magnet roller type separation method design scheme.

2. Carry out the separation of weak magnetic minerals, the actual operation is simple, the magnetic separation equipment effect is very good. The whole equipment has the advantages of large solving ability, wide classification of mineral grain size category, high separation precision.

3. PTMS is a technical professional manufacturer specializing in the production and manufacture of various mining machinery and equipment. The woltungsten wet magnetic separator developed for the production and manufacture of woltungsten concentrator can reasonably improve the grade of finished products.

2. The magnetic system of wolframite wet PTMS magnetic separator is made of plastic anti-static tweezers, featuring large magnetic field, strong mangy force and high magnetic flux density, and high magnetic induction intensity on reasonable separation surface.

3. Wolframite wet PTMS magnetic separator USES high-quality magnetic absorbing raw materials as magnetic medium, and chooses double-layer magnetic induction pole design scheme, which is suitable for magnetic separation equipment of fine particle size fine particle size minerals.

4. The size of the magnetic declination Angle determines the size of the sorting area. With the expansion of the magnetic deflection Angle, the separation area is reduced, and the separation time is reduced, the concentrate taste can be improved. The wolframite wet magnetic separator manufactured by our company has a sound magnetic system and effective equivalent circuit. The magnetic deviation Angle can be adjusted within the range of 5-25 according to different iron ore characteristics.

henan seasun heavy industry machinery co., ltd

henan seasun heavy industry machinery co., ltd

Copper ore dressing equipment Scope: Weakly magnetic minerals beneficiation, for example: hematite, limonite, ilmenite, wolframite, tantalum, niobium, etc.. Non-metallic minerals deironing, purification, for example: quartz, feldspar, nepheline, fluorite, sillimanite, spodumene, kaolin. Two common copper ore flotation process: 1. dye-shaped copper ore flotation process Generally use relatively simple process, after a period of grinding, fineness -200 mesh occupy about 50% to 70%, once roughing, two or three times selected, one or two times scavenging. Such as disseminated copper minerals has relatively small size, consider to adopt the stage grinding and separation processes. Processing bornite concentrator, mostly coarse concentrate regrinding - a selection of stage grinding and separation processes, and its essence is mixed - flotation process. First by a coarse grinding, roughing, scavenging, and then rough concentrate regrinding recleaner get high-grade copper concentrate and concentrate. Rough grinding -200 mesh about 45% to 50% and then pulverized -200 mesh occupy about 90% to 95%. 2. Dense copper ore flotation process Dense copper ore chalcopyrite and pyrite as tight symbiosis, pyrite is often secondary copper-activated pyrite content is high, difficult to suppress, sorting difficult. Sorting process requires both get copper concentrate and concentrate. Typically election of copper tailings is pyrite concentrate. If the ore gangue content of more than 20% to 25%, sulfur concentrate needed sorting again. Dense copper ore processing, often using two stages of grinding or grinding, fine grinding fineness requirements. Amount of reagent is also larger, xanthate dosage 100g / (t raw ore) above, lime 8 ~ 10kg (t raw ore) above. Copper ore beneficiation process: 1. crushing part: basic process of ore crushing process. Its purpose is to crush ore to an appropriate size, suitable for grinding part. 2. Grinding part: Part grind ore processed further to get a smaller size, to match up flotation separation material. 3. flotation sections: the flotation process / upgrade Copper important process. Chemicals are added to the mixer / blender, to make chemical reaction. Copper ore dressing plant: Mining ores first by the jaw crusher for preliminary broken, in broken to a reasonable fineness through ascension machine, after to mine machine uniform into ball mill, ball mill by crushing, grinding of ore. After grinding ball mill of ore materials into the next procedure and: grading. Hierachial machine with different proportion of solid particles in the liquid and the speed of the precipitation different principle of minerals, the mixture to wash, grading. After a wash and classification of the mineral mixture after magnetic separation unit. Because of various minerals than magnetized coefficient of different magnetic force and, by mechanical force will mixture of magnetic material separated. After magnetic separators preliminary after the separation in mineral grains was sent into the flotation machine, according to different mineral properties of different drugs, make to the minerals and other material separation open. Desire to minerals is isolated, because its a lot of moisture, must be approved by the initial concentration concentrating machine, then through the dryer drying, you will get dry minerals. Copper fine powder grade reached 45%. 200t/d Copper Ore Beneficiation Equipment: Device name Specifications Motor Power kw Number set Jaw crusher PE-400600 30 1 PEX-2501000 37 1 Vibrating feeder JZ-3 5.5 1 Ball mill MQ18303600 135 1 Spiral classifier FG-1200 5.5 1 Mixing barrel 1500 3 1 1500 3 1 Flotation machine SF1.2X4 88 4 group SF0.62X4 24 2 group Belt conveyor Length according to the site conditions We can also supply other capacity copper ore beneficiation production line,according to users' needs. Welcome to consult us!

electromagnetic separation of wolframite

electromagnetic separation of wolframite

Wolframite, sp. gr. 7.1 to 7.5, tungstate of iron and manganese, is feebly magnetic; specimens from some localities are reported to be strongly magnetic. Wolframite frequently accompanies cassiterite in tin ores, and on account of their similar specific gravities (cassiterite 6.4 to 7.02) these minerals may not be separated from each other by specific-gravity methods. The method usually followed in treating crude ore or concentrate of this class is to convert any iron, or copper-iron, sulphides which may be present into magnetic compounds by roasting, and separate these from the mixture by low-intensity magnets, then to pass the remainder through a stronger field which takes out the wolframite as a magnetic product and leaves a nonmagnetic tailing carrying the tin. Numerous tests on large quantities of tin-tungsten concentrates made preliminary to the installation of separation plants have yielded high extractions, and a number of these plants are at present in operation in Europe and elsewhere. Most of these installations treat the product of preliminary water concentration, but at least one of them is operating on raw ore. Difficulty has been experienced in the separation of wolframite from cassiterite through a tendency of magnetic particles to adhere to the cassiterite, thereby causing it to be drawn into the magnetic product when a strong field is used for separation; this tendency may be overcome by treating the concentrate with sulphuric acid and drying before pasing it to the separator. Arsenopyrite (sp. gr. 5.67 to 6.3) is of frequent occurrence in ores carrying wolframite: upon roasting this mineral the arsenic is driven off and the resulting magnetic oxide of iron separated from the wolframite by low-intensity magnets. Care must be taken in the roasting of concentrates carrying cassiterite that the heat does not rise to such a degree as to cause particles of magnetic oxide to become attached to the cassiterite particles, and so cause them to be drawn into the wolframite product.

At Gunnislake Clitters, England, tin-tungsten concentrate is being separated on Humboldt-Wetherill separators. The ore from the mine is crushed in breakers and rolls, sized, and the sands concentrated on tables and the slimes with Luhrig classifiers. The concentrate is roasted in a Bruckner furnace having a capacity of 10 tons daily; this material carries, raw, 12 per cent. sulphur and arsenic, principally the former, and the iron with which these elements are combined is rendered strongly magnetic in the roast. The roasted concentrate, after cooling, is fed to a Humboldt-Wetherill separator which carries 4 amperes on the first magnet and 12 amperes on the second. The first magnet removes the strongly magnetic iron compounds and the second the wolframite, while the tin is contained in the nonmagnetic tailing. The tungsten concentrate and the tin product from the separator are both reconcentrated to eliminate waste. The raw ore yields 0.378 per cent. tin and 0.72 per cent. tungsten. The tungsten concentrate carries from 60 to 64 per cent. tungstate of iron, equal to 46 to 49 per cent. WO8. The separator treats 6 tons of concentrate in 10 hours.

At Redruth, Cornwall, England, the East Pool & Agar United Mines Co. is operating a magnetic-separation plant on concentrates containing wolframite, cassiterite, arsenical pyrites, and chalcopyrite. The ore is crushed by stamps, classified, and con

centrated on Wilfley tables and Frue vanners, which deliver a concentrate carrying cassiterite, wolframite, and arsenical pyrites, the gangue minerals and the chalcopyrite being eliminated by the concentration. These concentrates are roasted and the arsenic driven off, to be recovered in the flues, while the residue is again passed over Wilfley tables, yielding a product consisting of about three parts oxide of tin to one part wolframite, and carrying about 5 per cent. magnetic oxide of iron. After drying, this product is passed over a Humboldt-Wetherill separator, which delivers three products: magnetic oxide taken out by the first and weaker magnet, wolframite taken out by the second and stronger magnet, and a nonmagnetic product carrying the tin.

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