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Work Done Before Iron Ore Beneficiation

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Iron ore beneficiation process flow chart usually includes three stages: they’re crushing raw iron ore to small contaminants, grinding iron ore contaminants to small powders and focusing the accessible iron ore.

The preparatory work for ore beneficiation includes crushing and screening, ore grinding and classification, and some ore dressing plants also include pre-concentration and ore washing process. The main purpose of this preparatory work is to realize the monomer separation of useful minerals and gangue minerals and the monomer separation of all kinds of useful minerals and provide proper dressing granularity for the ore beneficiation work.

(1) Crushing process. Crushing is a process in which large-sized materials become smaller in granularity under the effect of mechanical force. Its main role is preparing qualified dressing granularity for the ore beneficiation work, or providing the most suitable dressing, stone materials as fired and practical granularity for the dressing or metallurgy users.

In the practical production of mining industry, the widely used crushing methods at present are still predominated by mechanical force crushing, including crushing, cutting, breaking, grinding and impacting, and the non-mechanical force crushing such as ultrasonic crushing has not been in application in the industrial production yet.

(2) Screening work. The process of separating the mixed materials of different sizes according to their granularity level is called screening. Two products can be obtained by screening: one is above screen products whose granularity is smaller than the screen hole so that they are able to go through the screen surface, and the other is under screen products that are left on the screen surface. In order to make the screening process come true, the materials should do relative motion on the screen surface, the purpose of which is on one hand to keep the material layers on the screen surface in a loose state and to produce layers according to the granularity, and on the other hand, the motion of the materials and the screen promotes the materials that block the screen mesh to break away the screen surface which will help the materials go through the screen mesh. flotation cells:
stone production line:


Re-elect the current structure, used only for sorting simple, containing coarser cloth of manganese ore, especially for the oxidation of high density manganese ore. Common methods of heavy media beneficiation, ore dressing and shaking jig beneficiation. At present, China dealing with oxidation of manganese in the process, the general is broken ore to 6 0 mm or 10 0 mm, and then grouped for jigging coarse level and fine level of delivery shaking election. Equipment mostly Haz reciprocating jig and 6 – S-type shaker. $

(4). High Intensity Magnetic Separation

Manganese mineral is weakly magnetic minerals than the susceptibility in the magnetic field intensity Ho = 800 1600 kA / m (10000 20000 oe) of the strong magnetic field sorting machine can be recovered, the general can improve the grade of 4% Manganese 10%. As the magnetic separation of simple and easy to control, adaptability, can be used for sorting a variety of manganese ore, manganese ore dressing in recent years has been dominated. New types of coarse, medium and fine magnetic machine has been developed and successfully. Currently, the domestic application of manganese is the most common particle strong magnetic separator, coarse and fine intensity magnetic separator is gradually applied, micro-fine intensity magnetic separator is still in the testing stage.

As the professional manufacturer of complete sets of mining machinery, such as artificial sand maker, Henan Hongxing is always doing the best in products and service.


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  • Posted On June 6, 2012
  • Published articles 10

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