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A high-grade magnetic separation process

A high-grade, magnetic separation technology, applied in the direction of grain processing, etc., can solve the problems of inability to adjust the thickness of mineral materials, high tailings grade, low recovery rate, etc., and achieve the effect of reducing work load, high degree of automation and high recovery rate

Active Publication Date: 2021-08-17
何双江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the above-mentioned existing magnetic separation process cannot adjust the thickness of the mineral material, and the ore dressing is carried out under a relatively large thickness of the mineral material, resulting in excessive tailings grade and low recovery rate. The present invention provides a High-grade magnetic separation process

Method used

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  • A high-grade magnetic separation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A high-grade magnetic separation process, including a grinding stage, a magnetic separation stage and a tailings detection stage, including the following steps:

[0026] (1) After the raw ore goes through the grinding stage, it is sent to the top of the magnetic drum through the nozzle with adjustable outlet thickness to enter the magnetic separation stage. The concentrate adsorbed by the magnetic drum enters the concentrate bin, and the tailings that are not adsorbed by the magnetic drum are inspected for tailings stage;

[0027] (2) In the tailings detection stage, if the content of magnetic minerals contained in the tailings exceeds the set value, the tailings will be recovered and sent to the grinding stage, and mixed with the ground minerals. At the same time, the magnetic separation will be reduced. Nozzle outlet thickness of the stage;

[0028] (3) Step (2) is repeated until the content of magnetic mineral material in the tailings is lower than the set value, an...

Embodiment 2

[0031] Based on Example 1, in step (2), it can be set according to the mineral material grade, and the nozzle outlet thickness is reduced by 1-5mm each time.

Embodiment 3

[0033] Based on Example 1, in step (2), the nozzle is composed of a horizontally arranged lower baffle and an obliquely arranged upper baffle whose bottom end can rotate up and down around the top, and the nozzle outlet is formed between the bottom end of the upper baffle and the lower baffle , adjust the nozzle outlet thickness by turning the upper baffle. In addition, the end of the lower baffle located at the outlet of the nozzle can also rotate up and down around the other end, so that the upper baffle and the lower baffle can rotate at the same time, that is, the angle can be adjusted, so that the gap between the nozzle and the magnetic drum can be adjusted, and the beneficiation effect is improved. better.

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Abstract

The invention discloses a high-grade magnetic separation process, which includes the following steps: (1) After the raw ore passes through the grinding stage, it is sent to the top of the magnetic drum through a nozzle with adjustable outlet thickness to enter the magnetic separation stage, and the concentrate absorbed by the magnetic drum enters the In the concentrate bin, the tailings that are not absorbed by the magnetic drum are carried out in the tailings detection stage; (2) In the tailings detection stage, if the magnetic mineral content contained in the tailings exceeds the set value, the tailings will be recycled and put into the grinding stage, and mixed with the ore after grinding, at the same time, reduce the nozzle outlet thickness of the magnetic separation stage; (3) repeat step (2), until the magnetic ore content in the tailings is lower than the set value, the tailings Enter the tailings bin. On the one hand, the present invention guarantees the grade of the concentrate and the recovery rate is high; on the other hand, for the ore with a specific particle size, combined with the tailings detection stage and the nozzle with adjustable thickness, the appropriate thickness of the ore can be selected, which is suitable for A variety of mineral materials with different particle sizes have a wide range of applications.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a high-grade magnetic separation process. Background technique [0002] The existing beneficiation process is to spray the ore material from the nozzle to the front end of the magnetic drum, and the magnetic material is forcibly adsorbed on the conveyor belt by the strong magnetic drum, and runs together with the conveyor belt until it breaks away from the magnetic force of the strong magnetic drum and falls into the concentrate bin , while the unadsorbed impurities enter the tailing bin. Although this method can avoid the accumulation of mineral material on the conveyor belt, but considering the mineral processing efficiency, the mineral material has a certain thickness when it is sprayed from the nozzle, and the thickness of the mineral material itself will affect the mineral processing effect. This is because the strong magnetic The magnetic field inten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C23/08
CPCB02C23/08
Inventor 何双江
Owner 何双江