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A kind of beneficiation process for recycling lean magnetite

A technology of lean magnetite and process, which is applied in the field of beneficiation technology for the recovery and reuse of lean magnetite, can solve the problems that the grade of concentrated ore and processing capacity need to be improved, so as to improve the initial grade and concentrate grade and reduce production The effect of simple cost and beneficiation process

Active Publication Date: 2020-06-02
DAZHONG MINING CO LTD INNER MONGOLIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the patent application has reduced the cost and energy consumption of ore dressing, the grade and processing capacity of the ore selection still need to be improved

Method used

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  • A kind of beneficiation process for recycling lean magnetite
  • A kind of beneficiation process for recycling lean magnetite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Pre-selection before grinding: crush the clean ore, screen it with a screen with a diameter of 15mm, and then transport it to the feeding window of the magnetic separation workshop with a heightened belt conveyor, mix it with water to form a pulp with a concentration of 98%, and then enter Coarse pre-selection magnetic separator performs magnetic separation to obtain pre-selected concentrate and pre-selected tailings; among them, the net ore below 12mm after screening accounts for 91.2%, and among the pre-selected tailings, ores with a particle size of 1.5-15mm account for the pre-selected tailings 57% of the mine;

[0035] (2) pre-selection concentrate treatment: the pre-selection concentrate is sent into one section of ball mill for grinding, and then through one section of magnetic separation to obtain magnetic separation concentrate and magnetic separation tailings; wherein, the concentration of the pre-selection net ore sent into one section of ball mill is 91....

Embodiment 2

[0040] (1) Pre-selection before grinding: crush the clean ore, screen it with a screen with a diameter of 12mm, and then transport it to the feeding window of the magnetic separation workshop with a heightened belt conveyor, mix it with water to form a pulp with a concentration of 96%, and then enter Coarse-grain pre-selection magnetic separator performs magnetic separation to obtain pre-selected concentrate and pre-selected tailings; among them, the net ore below 12mm after screening accounts for 90.3%, and among the pre-selected tailings, ores with a particle size of 1.5-15mm account for the pre-selected tailings 55% of the mine;

[0041] (2) pre-selection concentrate treatment: the pre-selection concentrate is sent into a section of ball mill for grinding, and then through a section of magnetic separation to obtain magnetic separation concentrate and magnetic separation tailings; wherein, the concentration of the pre-selection net ore sent into a section of ball mill is 85%...

Embodiment 3

[0046] (1) Pre-selection before grinding: crush the clean ore, screen it with a screen with a diameter of 15mm, and then transport it to the feeding window of the magnetic separation workshop with a heightened belt conveyor, mix it with water to form a pulp with a concentration of 95%, and then enter Coarse pre-selection magnetic separator performs magnetic separation to obtain pre-selected concentrate and pre-selected tailings; among them, the net ore with a size of 12mm or less after screening accounts for 92.1%, and among the pre-selected tailings, ores with a particle size of 1.5-15mm account for the pre-selected tailings 60% of mine;

[0047] (2) pre-selection concentrate treatment: the pre-selection concentrate is sent into one section of ball mill for grinding, and then through one section of magnetic separation to obtain magnetic separation concentrate and magnetic separation tailings; wherein, the concentration of the pre-selection net ore sent into one section of ball...

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Abstract

The invention belongs to the field of ore dressing, and particularly relates to an ore dressing process for recycling lean magnetite. According to the process, the initial taste and the concentrate taste of ore are improved through the processes of pre-concentration before grinding, pre-concentrated concentrate treatment, pre-concentrated tailing classification, high-frequency cascade screening classification, waste ore recycling and the like, the beneficiation ratio is reduced, the production cost of a subsequent beneficiation process is reduced, and the ore dressing process is highly efficient.

Description

technical field [0001] This field belongs to the mineral processing field, and in particular relates to a mineral processing technology for recycling and reusing lean magnetite. Background technique [0002] In the past ten years, with the rapid development of China's economy and the rapid development of the iron and steel industry, the price of iron concentrate powder is relatively high, the development and utilization of ultra-poor magnetite resources are more extensive, and the mFe of iron ore resources that can be developed and utilized is lower. On a larger scale. Large-scale production ensures a high risk-resistance capability of the enterprise, but it also brings many problems. The most notable problems are the high energy consumption per unit of beneficiation, the impact of a large number of tailings on the environment and the low comprehensive utilization rate of resources. Therefore, how to reduce the energy consumption of beneficiation, better treatment of taili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03B9/00
CPCB03B7/00B03B9/00
Inventor 张开智田庆富孟瑞敏
Owner DAZHONG MINING CO LTD INNER MONGOLIA
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