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Lean ore processing method based on high-pressure roller mill

A technology of high-pressure roller mills and processing methods, applied in solid separation, grain processing, etc., can solve the problems of unutilized iron ore resources, inability to reduce the mFe grade of tailings and waste rocks, and failure to meet discarding standards, etc., to achieve convenient The effect of processing, fine processing, and metal recovery rate improvement

Active Publication Date: 2020-09-15
包头市石宝铁矿集团有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] During the processing process, the equipment cannot reduce the mFe grade in the tailings and waste rocks, resulting in the failure to meet the discarding standard, resulting in the unutilization of iron ore resources

Method used

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  • Lean ore processing method based on high-pressure roller mill
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  • Lean ore processing method based on high-pressure roller mill

Examples

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Embodiment Construction

[0027] In order to make the objects and advantages of the present invention clearer, the present invention will be further described below in conjunction with the examples; it should be understood that the specific examples described here are only for explaining the present invention, and are not intended to limit the present invention.

[0028] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

[0029] It should be noted that, in the description of the present invention, terms such as "upper", "lower", "left", "right", "inner", "outer" and other indicated directions or positional relationships are based on the terms shown in the accompanying drawings. The direction or positional relationship shown is ...

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Abstract

The invention relates to a lean ore processing method based on a high-pressure roller mill. The method comprises the steps that lean ore to be processed is obtained, wherein the granularity of the lean ore is 30 mm; the lean ore is conveyed to a feeding port of the high-pressure roller mill, and first crushed ore is obtained, wherein the granularity of the first crushed ore is smaller than or equal to 30 mm; the first crushed ore is conveyed to a feeding port of a wet sieve, after the wet screen vibrates at high frequency, second crushed ore left on the wet sieve is conveyed to the feeding port of the high-pressure roller mill, and the ore passing through the wet sieve is third crushed ore; and the third crushed ore is added into a medium field intensity magnetic separator, and magnetic minerals and non-magnetic minerals are separated. According to the lean ore processing method based on the high-pressure roller mill provided by the embodiment, corresponding single quality standards are established for the iron contents of the first crushed ore, the second crushed ore and the third crushed ore, so that the magnetic minerals in the lean ore are separated as much as possible, and thecontent of magnetic substances in tailings is reduced.

Description

technical field [0001] The invention relates to the field of mineral processing, in particular to a lean ore processing method based on a high-pressure roller mill. Background technique [0002] In recent years, the demand for iron ore has been increasing, but rich ore or relatively rich iron ore cannot meet the requirements of the market, and the development and utilization of lean ore and ultra-lean iron ore have received more and more attention. The content of strong magnetic iron minerals is low. If the raw ore is crushed and then directly ground and then magnetically separated, there may be a large amount of waste rock after the raw ore is crushed, which will increase the grinding cost of the grinder, resulting in The entire lean ore processing process is costly and inefficient. [0003] In the related technology, the particle size of raw ore after crushing in the crushing workshop is about 30mm, and then adopts dry pre-selection, and the particle size of the tailings ...

Claims

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Application Information

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IPC IPC(8): B03B9/00B03B1/00B02C21/00B02C23/14
CPCB02C21/00B02C23/14B03B1/00B03B9/00
Inventor 李佳霖王晓东杨长海代海江王俊威翟宏跃李杰李再兴
Owner 包头市石宝铁矿集团有限责任公司
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