Beneficiation method for weak magnetic iron ores

A mineral processing method and iron ore technology, which is applied in the field of mineral processing and weak magnetic iron ore, can solve the problems of abuse, resource waste, weak magnetic iron ore cannot be used, etc., and achieve strong technical operability and huge social The effect of economic benefits

Inactive Publication Date: 2018-01-19
徐州众工精密模锻有限公司
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Problems solved by technology

The existing iron ore beneficiation process is also aimed at iron-rich iron ore with strong magnetism with iron content above 55%, not suitable for weak magnetic iron ore, and for weak magnetic iron ore with iron content less than 35%. Iron ore beneficiation has never been a good method, resulting in a large amount of weakly magnetic iron ore not being able to be used, and even in some areas, it is abused as industrial stone at a low price, causing a great waste of resources

Method used

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Embodiment Construction

[0015] The present invention is further described below.

[0016] A kind of beneficiation method of weak magnetic iron ore, comprises the steps:

[0017] 1) Primary crushing: Put the iron ore to be selected into the crusher for primary crushing to obtain particles and powders <10mm;

[0018] 2) Initial screening: Put the particles and powder in step 1) into a screening machine with a strong magnetic field for screening to obtain magnetic iron ore particles and powders, and discard the particles and powders that do not pass the screening;

[0019] 3) Ball milling: putting the qualified particles and powders in step 2) into a ball mill for wet ball milling to obtain ore pulp;

[0020] 4) Classification: The ore pulp obtained in step 3) is transported to a screw screener for screening, and the particles >100um are ball milled again;

[0021] 5) Desliming treatment: Put the <100um iron ore obtained in step 4) into the desliming tank and then into the desliming tank for desliming...

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Abstract

The invention discloses a beneficiation method for weak magnetic iron ores. The beneficiation method for the weak magnetic iron ores comprises the steps of primary crushing, primary screening, ball-milling, grading, desliming treatment, concentration and warehousing. Weak magnetic iron ore enrichment and concentration which are still beyond the reach of the prior art can be achieved by adopting anumber of common facilities, the iron content of the concentrated weak magnetic iron ores can reach 50-55%, the procedure is obtained based on years of practice, the weak magnetic ores are subjected to gravity separation for use creatively, and a high concentration ratio and a high fine powder grade are obtained. According to the beneficiation method for the weak magnetic iron ores, the technicalinteroperability is high, no technician with a quite high technical level is needed, and great social and economic benefits are achieved.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a beneficiation method of weakly magnetic iron ore, and belongs to the technical field of ore screening. Background technique [0002] With the development of the iron and steel industry, the demand for iron and steel in all walks of life is increasing. Due to the consideration of mining efficiency and cost, most domestic iron ore mining enterprises focus on the mining of rich iron ore and ignore Mining of lean iron ore. The existing iron ore beneficiation process is also aimed at iron-rich iron ore with strong magnetism with iron content above 55%, not suitable for weak magnetic iron ore, and for weak magnetic iron ore with iron content less than 35%. There has been no good method for beneficiation of iron ore. As a result, a large amount of weakly magnetic iron ore cannot be utilized, and even in some areas, it is abused as industrial stone at a low price, causing a great waste of res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C1/30B03C1/025B02C21/00B02C23/14
Inventor 李虎张志远彭怀正
Owner 徐州众工精密模锻有限公司
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