Mineral separation technology for recycling graphite and mica in graphite tailings

A technology for graphite tailings and medium graphite is applied in the field of beneficiation technology for recovering graphite and mica in graphite tailings, and can solve the problems of low grade recovery rate of graphite and mica concentrate, unsatisfactory separation and recovery effect of graphite and mica, etc. , to achieve the effect of improving resource utilization

Inactive Publication Date: 2016-01-27
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technological process of prior art reclaiming graphite and mica is as Figure 2 ~ Figure 4 As shown, these processes obtain graphite, mica concentrate grade and / or recovery rate are low, graphite, mica separation and recovery effect is not satisfactory

Method used

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  • Mineral separation technology for recycling graphite and mica in graphite tailings
  • Mineral separation technology for recycling graphite and mica in graphite tailings
  • Mineral separation technology for recycling graphite and mica in graphite tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The graphite content in the tailings pond of the graphite mining area in Luobei County, Heilongjiang is 4.98%, the mica content is 5.45%, the feldsparized mica accounts for 19.22%, the quartz accounts for 21.35%, the feldspar accounts for 19.65%, the garnet accounts for 7.0%, and the anorthite Accounting for 5.73%, pyroxene 3.83%, tremolite 3.88%, other non-metallic gangue minerals 8.91%. The sieving analysis of graphite tailings shows that -0.074mm accounts for 89.90%, the particle size is relatively fine, and the gangue minerals are complex.

[0034] process such as figure 1 shown. The add-on of depressant, collector, foaming agent in step I is in every ton of graphite tailings, and the add-on of inhibitor, collector, foaming agent in step IV is in per ton of non-magnetic minerals.

[0035] Step I: The above-mentioned graphite tailings are not ground and directly enter the flotation machine to preferentially recover graphite, the mass concentration of the pulp is 3...

Embodiment 2

[0040] Graphite tailings are taken from a graphite tailings pool in Hubei Province, which contains 3.85% amorphous carbon, 13.16% mica, 43.15% quartz, 20.81% feldspar, 11.88% montmorillonite, and epidote 2.05%, magnetite content 1.07%, other mineral content 4.03%. The mineral particle size is relatively coarse, -0.074mm accounts for 60.84%, and the mineral composition is complex. This process is suitable for the graphite tailings.

[0041] process such as figure 1 shown. The add-on of depressant, collector, foaming agent in step I is in every ton of graphite tailings, and the add-on of inhibitor, collector, foaming agent in step IV is in per ton of non-magnetic minerals.

[0042] Step I: Since the particle size of the graphite tailings taken from the tailings pond is relatively coarse, the graphite tailings are firstly ground, and the grinding fineness is -0.074mm, accounting for 90.00%, and then the ground tailings are subjected to flotation. The mass concentration of ore...

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Abstract

A mineral separation technology for recycling graphite and mica in graphite tailings includes the following steps that I, graphite flotation is conducted on the graphite tailings, and graphite concentrate and graphite flotation tailings are obtained; II, re-flotation is conducted on the graphite flotation tailings obtained in the step I, sink sand is obtained, and the sink sand is enriched with the mica; III, magnetic separation is conducted on the sink sand obtained in the step II, and magnetic minerals and non-magnetic minerals are obtained; and IV, mica flotation is conducted on the non-magnetic minerals obtained in the step III, and mica concentrate is obtained. By means of the mineral separation technology, the concentrate grade and the recycling rate of the graphite and the mica recycled from the graphite tailings are increased.

Description

technical field [0001] The invention relates to a recovery process of graphite and mica in graphite tailings. Background technique [0002] There are three commonly used methods for separating graphite from graphite ore: flotation, gravity separation, and chemical leaching. Graphite is a natural mineral with good buoyancy. Usually, the addition of non-polar collectors can achieve a good recovery effect. Therefore, flotation is used for large flake graphite, and the cost is low. When the specific gravity of graphite and gangue minerals differs greatly, gravity separation can be used. Graphite belongs to light minerals and is easy to separate from medium and heavy minerals. Chemical leaching is suitable for aphanitic graphite ore that requires high purity of graphite concentrate. [0003] There are three sorting methods for mica ore: winnowing, flotation and re-election. Wind selection is suitable for mica that is broken into large flakes. The flotation process is suitable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 宋永胜李凤李文娟陈勇陈超
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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