Ore dressing method and ore dressing system suitable for lean magnetite ores

A beneficiation method and technology of lean magnetite, which is applied in the process flow and the change rule of process parameters, iron ore crushing and beneficiation equipment, can solve the problems of large amount of medium ore, large amount of regrind in the return process, and high grade.
CN103041920AActive Publication Date: 2013-04-17TAIYUAN IRON & STEEL GROUP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TAIYUAN IRON & STEEL GROUP
Publication Date
2013-04-17

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Abstract

The invention relates to an ore dressing method and ore dressing system suitable for lean magnetite ores. The ore dressing method comprises the following steps: (1), four crushing treatments, wherein magnetic separation treatment is carried out on the ores after the last two crushing treatments; and (2), a plurality of staged treatments including grinding, classifying and magnetically separating the ore powder at the plurality of stages in circulation. The invention provides a mixed ore enriching method for lean ores, interlayer ores, recovered ores and the like; therefore, resource waste is reduced, the pressure of a waste-rock yard is reduced, the benefits are increased and purposes of turning waste into wealth, saving energy and reducing emission are achieved.
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Description

technical field

[0001] The invention belongs to the iron ore crushing and magnetic separation mineral processing process technology, specifically including iron ore crushing and mineral processing equipment, process flow and process parameter variation rules. Background technique

[0002] In China, the beneficiation process has been basically finalized. Generally, the crushing process has formed a closed-circuit process of three-stage crushing and vibrating screen screening; the grinding process has formed a four-stage grinding and classification five-stage weak magnetic separation process. More crushing and less grinding, dry magnetic separation process, crushing particle size vibration screening, cyclone fine particle classification, magnetic gravity separation and other technologies are widely used in metallurgical mines, but the properties of each ore are different and the application conditions are different. Copying and copying will not play a role in improving efficie...

Claims

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