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A high-efficiency magnetic separation mechanism

A magnetic separation and high-efficiency technology, applied in the fields of magnetic separation, solid separation, chemical instruments and methods, etc., can solve the problems such as the inability to solve the contradiction between the grade of the finished ore and the recovery rate, the energy consumption of metal loss, and the reduction of the recovery rate, so as to improve the precision The effect of mineral taste, waste avoidance, and content reduction

Active Publication Date: 2017-11-24
海南山金矿业有限公司
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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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  • A high-efficiency magnetic separation mechanism

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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a kind of high-efficiency magnetic separation mechanism of the present invention, the present invention discloses a kind of high-efficiency magnetic separation mechanism, comprises the belt 8 that is used for mineral material conveying and the magnetic separation mechanism of mineral material output side; Belt 8 inner side is provided with for vibration The vibrating mechanism 4 of the mineral material above the belt 8.

[0036] The belt 8 inboard is also provided with a magnetic mechanism 3 .

[0037] The magnetic mechanism 3 is arranged below the vibration mechanism 4 . The magnetic field strength of the magnetic mechanism 3 decreases gradually along the conveying direction of the belt 8 , and the magnetic mechanism 3 adopts a structure in which N-S poles are alternately arranged.

[0038] The vibration mechanism 4 is a cam, an eccentric wheel, or a combination of a cam and an eccentric wheel, and the cam, an eccentric wheel, or a combinat...

Embodiment 2

[0046] Based on the magnetic separation mechanism of embodiment 1, its magnetic separation system includes a magnetic separation unit, a delivery unit, a vibration unit, a detection unit, and a control unit;

[0047] The conveying unit includes a belt, a driving wheel, a driven wheel, a driver, a conveying frame, a hydraulic device, and a hydraulic support column; the hydraulic supporting column is installed on the conveying frame, driven by a hydraulic device and controls the inclination angle of the belt, and the driving wheel and the driven wheel are installed separately On the conveyor frame, the belt is set between the driving wheel and the driven wheel, and the belt includes the upper belt and the lower belt; the driving wheel is driven by the driver, and the material is output from the side of the driven wheel; a fine hopper and a waste hopper are set under the driven wheel;

[0048] The vibration mechanism is arranged on the lower side of the upper belt and arranged alo...

Embodiment 3

[0054] Based on embodiment 1 and the magnetic separation mechanism and magnetic separation system of embodiment, its magnetic separation method is:

[0055] Step 1: Start the controller, the controller adjusts the belt to incline 20 degrees and convey the material at a speed of 0.6-0.7m / s, the control cam rotates at a speed of 60-70r / min, and the eccentric wheel rotates at a speed of 80-90r / min , the magnetic mechanism provides a magnetic field of 1200-1500 Gauss;

[0056] Step 2: The first weighing device measures the material weight m1 at the entrance of the conveying unit; the second weighing device measures the material weight m2 in the fine hopper, and the third weighing device measures the material weight m3 in the waste hopper; the controller collects m1, m2, the value of m3;

[0057] Step 3: When the ratio of m2 increment to m3 increment is less than 0.5, the speed of the control cam is increased by 20-30%, and the speed of the control eccentric wheel is increased by ...

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Abstract

The invention relates to a mine magnetic separation device, in particular to an efficient magnetic separation mechanism. The efficient magnetic separation mechanism comprises a belt used for conveying mineral aggregate and a magnetic separation mechanism body on the output side of the mineral aggregate; and a vibration mechanism used for vibrating the mineral aggregate above the belt is arranged on the inner side of the belt. The vibration mechanism can effectively vibrate the belt, the mineral aggregate on the belt is layered according to the granularity, the mineral aggregate which needs to be retained and is small in granularity can be attached to the belt, and therefore when magnetic separation is conducted at the position of the magnetic separation mechanism body, more magnetic mineral aggregate can be brought into a concentrate opening, and the recycling rate of magnetic mineral can be increased. The mechanism is simple in structure, convenient to assemble and capable of making concentrate vibrate and rise and fall repeatedly, accordingly, the problems of magnetic wrapping and magnetic inclusion are effectively solved, the grade of the concentrate is improved, and meanwhile the purpose of obvious layering of the concentrate is achieved.

Description

technical field [0001] The invention relates to a mine magnetic separation device, in particular to a high-efficiency magnetic separation mechanism. 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, the ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03C1/16
CPCB03C1/16
Inventor 张荣斌王连明
Owner 海南山金矿业有限公司
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