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Series classification magnetic separator

A magnetic separator and sorting technology, applied in the fields of magnetic separation, solid separation, chemical instruments and methods, etc., can solve the problems of inability to solve the contradiction between product ore grade and recovery rate, metal loss and energy consumption, and high tailings grade. Solve the effect of magnetic encapsulation and magnetic inclusion, improve recovery, and ensure the grade of finished ore

Active Publication Date: 2018-01-02
CHENGDU LEEJUN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using a dry magnetic separator for separation, due to the uneven particle size of the ore, in order to obtain a higher grade, it is usually crushed according to the minimum particle size, so that a part of the iron minerals that have reached the monomer dissociation are unnecessary. At the same time, due to the serious over-grinding of useful minerals, although the iron ore recovery effect of weak magnetic operation is better, the phenomenon of gangue inclusions is serious. In order to improve the grade, the recovery rate has to be reduced. rate, resulting in higher tailings grade
In other words, the existing dry magnetic separator cannot solve the contradiction between the finished ore grade and the recovery rate

Method used

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Experimental program
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Effect test

Embodiment 1

[0035] Such as figure 1 Shown, a kind of tandem classification magnetic separator comprises frame 2, and in said frame 2, first-level sorting belt 3, first-level conveying belt 4, second-level sorting belt 5 and two-level Conveyor belt 6; the first-level sorting belt 3 is located below the feed port 1, the discharge end of the first-level sorting belt 3 is provided with a tail-throwing mechanism-7, and the inner side of the lower belt of the first-level sorting belt 3 A sorting magnetic system-12 is provided, and a demagnetization zone is provided between the described tail-throwing mechanism-7 and the sorting magnetic system-12; a first-level conveyor belt 4 is arranged below the first-level sorting belt 3, and the first-level The feeding end of the conveyor belt 4 covers the discharge range of the tail-throwing mechanism-7, and the sorting magnetic system-12 covers the discharge end of the primary conveyor belt 4; the bottom of the primary conveyor belt 4 is provided with a ...

Embodiment 2

[0052] Embodiment two is the same as embodiment one, and its difference is that the sorting magnetic system two 18 arranged on the inner side of the lower belt of the secondary sorting belt 5 is cancelled, as figure 2 As shown, this series grading magnetic separator is mainly aimed at materials with higher grades, that is, after the materials are sorted by the primary sorting belt 3, the weak magnetic materials 202 and extremely weak magnetic materials 203 can be separated by the tail throwing mechanism 2 8 The second magnetization wheel 11 is completely sorted out and falls on the secondary conveying belt 6 after breaking away from the working range of the second magnetization wheel 11 and is sent into the middle ore mouth 22, so there is no need to sort again, which is conducive to reducing equipment costs.

Embodiment 3

[0054] This embodiment is the same as Embodiment 1, the difference is that in this embodiment, there is no magnetic system adjustment mechanism 19, and the sorting magnetic system 1 12 is composed of a plurality of small magnetic systems arranged, and two adjacent small magnetic systems are arranged. The magnetic field strength of the magnetic system is different, so that the sorting magnetic system-12 has a plurality of magnetic field regions with different magnetic field strengths, such as image 3 and Figure 4 As shown, the magnetic field strengths of the small magnetic system 1201 and the small magnetic system 1202 are different. The magnetic field areas of the sorting magnetic system 12 are divided into strong magnetic areas, weak magnetic areas, strong magnetic areas, and weak magnetic areas along the direction of material transportation. A small magnetic system can be arranged horizontally on the inside of the primary sorting belt 3, or can be arranged in a zigzag shap...

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Abstract

The invention discloses a series grading magnetic separator. The series grading magnetic separator comprises a rack which is internally provided with a first-grade separation belt, a first-grade conveying belt, a second-grade separation belt and a second-grade conveying belt from top to bottom in sequence; the first-grade separation belt is located below a feeding opening, a first tailing throwing mechanism is arranged at the unloading end of the first-grade separation belt, and a first separation magnetic system is arranged on the inner side of a lower belt of the first-grade separation belt; the unloading end of the first-grade conveying belt is covered with the first separation magnetic system; and the unloading end of the first-grade conveying belt is covered with the feeding end of the second-grade separation belt, a second tailing throwing mechanism is arranged at the unloading end of the second-grade separation belt, and the unloading scope of the second tailing throwing mechanism is covered with the feeding end of the second-grade conveying belt. The series grading magnetic separator is simple in structure, wide in application scope, capable of guaranteeing the grade of the finished product mine, capable of improving the recovery rate and suitable for separating magnetic mineral ground by grinding equipment in the industry of metallurgy, mines, chemical engineering and the like.

Description

technical field [0001] The invention relates to the field of mine magnetic separation equipment, in particular to a series-classified magnetic separator. Background technique [0002] my country's iron ore resources are relatively rich, but there are many lean ores and few rich ores, so almost all iron ores must be sorted to improve the grade and utilization rate of raw materials. When using a dry magnetic separator for separation, due to the uneven particle size of the ore, in order to obtain a higher grade, it is usually crushed according to the minimum particle size, so that a part of the iron minerals that have reached the monomer dissociation are unnecessary. At the same time, due to the serious over-grinding of useful minerals, although the recovery of iron ore by weak magnetic field is better, the phenomenon of gangue inclusions is serious. In order to improve the grade, the recovery rate has to be reduced. rate, resulting in higher grade tailings. In other words, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C1/22
CPCB03C1/22
Inventor 何亚民魏勇徐智平
Owner CHENGDU LEEJUN IND
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