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Combined collecting agent for flotation of cryptocrystalline graphite ore

A cryptocrystalline graphite and collector technology, used in flotation, solid separation, etc., can solve the problems of difficulty in selecting high-carbon graphite products, serious inclusion of gangue minerals, poor selectivity, etc., to improve development and utilization. Value, the effect of efficient development and utilization

Inactive Publication Date: 2016-01-13
HUNAN RES INST FOR NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low-grade aphanitic graphite resources have poor selectivity and extremely fine intercalated particle size. Conventional beneficiation reagents for neutral oil flotation concentrate have a low enrichment ratio, poor selectivity, and serious gangue mineral inclusions, so it is difficult to separate them. High Carbon Graphite Products

Method used

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  • Combined collecting agent for flotation of cryptocrystalline graphite ore
  • Combined collecting agent for flotation of cryptocrystalline graphite ore
  • Combined collecting agent for flotation of cryptocrystalline graphite ore

Examples

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Effect test

Embodiment 1

[0025] The raw ore is selected from a cryptocrystalline graphite mine in Hunan. The fixed carbon content in the ore is 70%. The shape of the ore is generally similar to coal under the naked eye. Graphite is the main mineral in the ore, the main gangue minerals are mica, quartz and chlorite, and a small amount of calcite and metal sulfides. The main purpose is to recover mineral graphite as aphanitic graphite produced by contacting metamorphic deposits of primary sedimentary rocks, also known as soil graphite.

[0026] Combined collector of the present invention is used for following ore dressing process, comprises the following steps:

[0027] (1) Grinding the raw ore to -0.074mm accounts for 85%;

[0028] (2) Add 800g / t combined collector to the ground raw ore, stir for 2 minutes and then carry out graphite flotation. The roughing time is 10 minutes to obtain graphite rough concentrate and tailings;

[0029] (3) Regrind the coarse graphite ore, and the regrinding fineness i...

Embodiment 2

[0037] The raw ore is selected from a cryptocrystalline graphite mine in Guizhou, and the fixed carbon content in the ore is 50%. Graphite is the main mineral in the ore, and the main gangue minerals are quartz, dolomite, mica and a small amount of calcite and metal sulfides.

[0038] Combined collector of the present invention is used for following ore dressing process, comprises the following steps:

[0039] (1) Grinding the raw ore to -0.074mm accounts for 75%;

[0040] (2) Add 500g / t of combined collector to the ground raw ore, stir for 2 minutes, and then carry out graphite roughing, the roughing time is 6 minutes, and obtain graphite rough concentrate and tailings;

[0041] (3) Regrind the graphite coarse concentrate, and the regrinding fineness is -0.023mm, accounting for 80%. After regrinding, add 200g / t of combined collectors, stir for 2 minutes and then select, and the flotation time is 8 Minutes to obtain graphite concentrate one, add 150g / t combined collector to ...

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Abstract

The invention relates to a collecting agent for flotation of cryptocrystalline graphite ore. The collecting agent is a combined collecting agent AM, wherein the combined collecting agent AM is composed of the following components in parts by weight: 60-70 parts of diesel oil, 20-30 parts of ether alcohol and 10-20 parts of C12H25-N(CH3)2CH2COO. The collecting agent has high collecting capacity for cryptocrystalline graphite and excellent selectivity and can obtain high-carbon graphite concentrate from low-grade cryptocrystalline graphite ore through beneficiation, wherein the fixed carbon content of the high-carbon graphite concentrate is 95%.

Description

technical field [0001] The invention relates to the field of mineral processing, and specifically provides a beneficiation agent that can be used for flotation of aphanitic graphite ore and a use method thereof. Background technique [0002] Graphite resources are one of the advantageous mineral resources in my country. According to the crystallization degree of graphite, it can be divided into crystalline (flaky) graphite ore and aphanitic (soily) graphite ore. Judging from the proven reserves of graphite resources in my country, flake graphite resources with good selectability account for about 60%, and aphanitic graphite resources with poor selectability account for about 40%. With the development and utilization of graphite resources, crystalline graphite ores with good selectivity are decreasing day by day, and aphanitic graphite resources, which were not valued before, have attracted more and more attention. [0003] Due to its extremely fine crystal grain size, some ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/012B03D101/02
Inventor 陈代雄曾惠明杨建文李小健薛伟董艳红李晓东
Owner HUNAN RES INST FOR NONFERROUS METALS
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