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Low-quality and low-concentration protection extraction process for graphite squama

An extraction process and technology of graphite flakes, applied in the field of low-quality and low-concentration protection extraction process of graphite flakes, can solve the problems of high energy consumption, limited purification purity, complex process flow, etc., achieve high content, solve screening and classification difficulties, and improve quality Good results

Inactive Publication Date: 2019-10-25
苏州中材非金属矿工业设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above methods or processes all have the problems of complex process flow, high energy consumption, and limited purification purity.

Method used

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  • Low-quality and low-concentration protection extraction process for graphite squama
  • Low-quality and low-concentration protection extraction process for graphite squama

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1) Crushing: A crystalline graphite raw ore with a carbon content of 4.58% in Luobei is crushed by a jaw crusher, and then enters a roller press for closed-circuit crushing. The crushed particle size is 1-2 mm, and the materials that do not meet the particle size requirements are returned to the roller press. ;

[0048] 2) Wet grinding: the pulverized material enters the rod mill for wet grinding, and the content of the particle size above 0.15mm is 40%;

[0049] 3) Rough separation: the wet grinding material enters the flotation machine for rough separation under the concentration of ore pulp 10%, kerosene 50g / t, and No. Mine 1; the re-election overflow is coarse concentrate, and the bottom flow is merged into the middle ore 1; the foam of the flotation machine is intermittently washed with spray water during the flotation process;

[0050] 4) Regrinding: the coarse concentrate enters the rod mill for regrinding, and the content of the particle size above 0.15mm is 30...

Embodiment 2

[0053] 1) Crushing: A crystalline graphite raw ore with a carbon content of 6.02% in Madagascar is crushed by a jaw crusher, and then enters a roller press for closed-circuit crushing. The crushed particle size is 1-2mm, and the materials that do not meet the particle size requirements are returned to the roller press;

[0054] 2) Wet grinding: the pulverized material enters the rod mill for wet grinding, and the content of the particle size above 0.15mm is 50%;

[0055] 3) Rough separation: The wet grinding material enters the flotation machine for rough separation under the concentration of ore pulp 5%, kerosene 20g / t, No. 2 oil 100g / t; Mine 1; the re-election overflow is coarse concentrate, and the bottom flow is merged into the middle ore 1; the foam of the flotation machine is intermittently washed with spray water during the flotation process;

[0056] 4) Regrinding: the coarse concentrate enters the rod mill for regrinding, and the content of the particle size above 0.1...

Embodiment 3

[0059] 1) Crushing: A crystalline graphite raw ore with a carbon content of 4.58% in Luobei is crushed by a jaw crusher, and then enters a roller press for closed-circuit crushing. The crushed particle size is 1-2mm, and the materials that do not meet the particle size requirements are returned to the roller press. ;

[0060] 2) Wet grinding: the pulverized material enters the rod mill for wet grinding, and the content of the particle size above 0.15mm is 50%;

[0061] 3) Rough separation: the wet grinding material enters the flotation machine for rough separation under the conditions of pulp concentration 8%, kerosene 50g / t, No. 2 oil 50g / t; Mine 1; the re-election overflow is coarse concentrate, and the bottom flow is merged into the middle ore 1; the foam of the flotation machine is intermittently washed with spray water during the flotation process;

[0062] 4) Regrinding: the coarse concentrate enters the rod mill for regrinding, and the content of the particle size abov...

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Abstract

The invention provides a low-quality and low-concentration protection extraction process for graphite squama. The low-quality and low-concentration protection extraction process of the graphite squamacomprises the following steps: (1) pulverization, (2) wet grinding, (3) rough selection, (4) re-grinding, and (5) fine selection: performing first fine selection on re-ground materials, performing flotation overflow, then performing second fine selection, merging a bottom current into a middling product 1, performing dehydration on the second-selected overflow, and performing drying so as to obtain ore concentrate, wherein the bottom current is a middling product 2. Large-squama graphite can be separated from gangue in a reasonable selective pulverization mode, so that damage to the graphitesquama is reduced greatly; meanwhile, the large-squama graphite can be extracted preferentially through the low-quality low-concentration flotation process, then the separated part of the large-squamagraphite can be treated separately, and therefore the graphite concentrate with high squama content can be obtained under the condition of the shortened flotation process; and the final ore concentrate product has a content of not less than 58% at +0.15 mm, and the content of fixed carbon is not less than 90%.

Description

technical field [0001] The invention belongs to the technical field of crystalline graphite purification and processing, and relates to a graphite flake protection extraction process, in particular to a graphite flake low-quality and low-concentration protection extraction process. Background technique [0002] Graphite is a non-metallic mineral material with stable properties and layered structure. It can be divided into two types: crystalline graphite and aphanitic graphite. It has high temperature resistance, corrosion resistance, thermal shock resistance, high strength, good toughness, self-lubricating , thermal conductivity, electrical conductivity and other properties, crystalline graphite is an essential and important raw material for industries such as metallurgy, machinery, electronics, chemical industry, light industry, military industry, aerospace and refractory materials. Crystalline graphite can be divided into large flake graphite, fine flake graphite and micro...

Claims

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Application Information

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IPC IPC(8): C01B32/21B03B9/00
CPCB03B9/00C01B32/21
Inventor 贺洋于阳辉
Owner 苏州中材非金属矿工业设计研究院有限公司
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