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sf flotation production line for various metal separation

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.

sf flotation cell

sf flotation cell

Xinhai mineral processing equipment mainly include: grinding equipment, flotation equipment, dewatering equipment, magnetic separation equipment, and so on. Some of the equipment is Xinhai independent research and development, and has been awarded national patent. View details

Gold CIP Production Line adsorbs gold from cyaniding pulp by active carbon including 7 steps: leaching pulp preparation, cyaniding leaching, carbon adsorption, gold loaded carbon desorption, pregnant solution electrodeposit, carbon acid regeneration, leaching pulp. View details

Long service life of wear parts Each tank with air suction, slurry suction and flotation function does not need any accessory equipment to form flotation circle, which is convenient for process flow changing;

SF flotation cell adopts creative forward tank, double side blades of water wheels, draft tube and the false bottom device. The slurry in tank takes upper and lower circulation according to the fixed flow mode, which is conducive to suspension of coarse particle

A copper dressing plant in Yunnan adopted gravity separation process firstly, but grade is low after separation. Finally the client consulted Xinhai through friends, and decided to adopt gravity - flotation separation process eventually after the mineral processing test. The flotation process adopted SF flotation cell which is researched and developed by Xinhai independently. Each tank with air suction, slurry suction and flotation function does not need any accessory equipment to form flotation circle, which is convenient for process flow changing and improves the separation efficiency. After separated, the concentrate grade is increased by 10% than expected, the economic benefit is guaranteed.

the definitive guide to flotation separation | fote machinery

the definitive guide to flotation separation | fote machinery

The flotation separation mainly refers to froth flotation, which is based on the difference in physical and chemical properties of the surface of minerals, using the buoyancy of bubbles in the ore pulp to achieve separation.

The basic process of flotation separation mainly includes: (1) Grind the ore finely to dissociate useful minerals from gangue minerals; (2) Adjust the ore pulp and add flotation agents; (3) Flotation processing; (4) Handle the product (do the filtering, concentrating, or drying).

3. Compared with other beneficiation methods, flotation separation is more efficient. Low-grade raw ore can be separated into a high-grade concentrate so that the mineral resources can be fully utilized. For the fine-grained disseminated ore, flotation separation is particularly effective. It solves many problems of the recovery of useful components from fine-grained mineral particles, thereby having a high recovery rate.

1. For the Oxide minerals and silicates, such as goethite, corundum and quartz, the surface electrical property will greatly affect the floatability. It lies in that these minerals will have electrostatic adsorption with collectors. The symbols of surface electrical property are related to the pH value of the ore pulp.

2. For the sulfide minerals, such as copper, lead and zinc, collected with xanthate, the surface electrical property has little or no effect on the floatability. Thats because the action of xanthate with minerals mainly depends on the chemical affinity rather than the electrostatic force.

Research and experiments have shown that some sulfide minerals will have a better floatability after being slightly oxidized within a certain limit. However, if they are over oxidized, the floatability will decrease.

1. Adjust the speed of slurry agitation and control the flotation time. It has been proven that the speed of air agitation and duration are the important factors for controlling the oxidation degree of minerals;

Its principle is to add the flocculant into the suspension that contains two or more compositions. The flocculant is selectively adsorbed on the surface of a certain mineral composition to promote its flocculation and sedimentation. The remaining compositions still maintain a stable dispersion state to achieve the purpose of separation.

The dispersant, such as water glass, can fully disperse the useful mineral compositions in the ore pulp to make them have no adhesion and connection with each other, thereby creating a better condition for the selective flocculation;

When stirring the ore pulp, please pay attention to the following points. Stirring is generally conducted in different stages with quick stirring first to fully disperse the reagents, and then full stirring to facilitate the selective flocculation of minerals; The ore pulp should be diluted to facilitate the cleanness of flocculant and reduce the adhesion of other minerals; The flocs should not be too large in case that the impurities are entrained.

The time of settlement should be appropriate. If the time is too short, the product will be purer, but will affect the recovery rate; if the time is too long, the impurities will also settle to affect the mineral quality. Besides, if the first flocculation fails to meet the product requirements, the flocculation process can be carried out again.

The three-phase system of flotation includes the solid phase, liquid phase and gas phase. The solid phase refers to the finely ground mineral particles; the liquid phase refers to the water and solution; the gas phase refers to the dispersed bubbles.

The flotation speed refers to the flotation time when a certain recovery rate or unit production capacity of the flotation machine is reached. Thus, by improving the recovery rate or shortening the flotation time, the flotation speed can be increased.

Xanthate is the collector of sulfide ore with a strong collecting ability. It is a yellow crystalline powder with an irritating effect. Because xanthate is easy to be soluble in water, and easy to be decomposed when it is heated, damp, and exposed to alkali or acid, it should be stored in a cool and dry place.

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.

flotation plant in metallurgy - jxsc machine

flotation plant in metallurgy - jxsc machine

SF Flotation Plant is widely used for roughing, concentrating and counter-flotation of nonferrous metal that includes gold, copper, lead, zinc, nickel and molybdenum, ferrous metal and nonmetallic mineral.

The impeller is driven by V-belts, which can bring the centrifugal effect to form the negative pressure. On the one hand, to inhale sufficient air to mix with ore pulp; on the other hand, to stir ore pulp and mix with medication to form the mineralized froth. To adjust the height of the flashboard to control the liquid level and make the useful froth scraped by the loam board.

The flotation plant is always applied with SF series flotation machines to form a joint unit; SF flotation machine is used for inhalation slot of pulp self-absorption while the JJF series flotation machine is used for DC slot. And then, operation space is level configuration without foam pump to get high sorting indicators. JJF series and SF series also play their respective advantages. It is mainly used for copper, lead, zinc, nickel, molybdenum, gold and other non-ferrous metals, ferrous metals and non-metallic minerals roughing, selection and flotation operations.

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