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Beneficiation method of micro-fine particle graphite ores for producing high-carbon graphite

A beneficiation method and graphite ore technology, applied in chemical instruments and methods, flotation, wet separation, etc., can solve problems such as difficulty in producing high-carbon graphite concentrates, achieve good collection and selectivity, eliminate The effect of improving the recovery rate of inclusions and graphite

Inactive Publication Date: 2016-04-06
HUNAN RES INST FOR NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problem that the existing fine-grained graphite ore resources are difficult to produce high-carbon graphite concentrate through mineral processing and purification, research and develop the efficient mineral processing technology of fine-grained graphite ore resources, and replace the existing mineral processing-chemical method to produce high-carbon graphite The purification process of concentrate simplifies the process of producing high-carbon graphite concentrate, reduces production energy consumption and cost, and provides a new method for the production and processing of high-carbon graphite concentrate from fine-grained graphite ore resources

Method used

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  • Beneficiation method of micro-fine particle graphite ores for producing high-carbon graphite
  • Beneficiation method of micro-fine particle graphite ores for producing high-carbon graphite
  • Beneficiation method of micro-fine particle graphite ores for producing high-carbon graphite

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Embodiment 1

[0030] A certain domestic fine-grained flake graphite mine, according to the test data, shows that the fixed carbon content in the raw ore is 8.50%, which is a low-grade fine flake graphite mine. The graphite in the ore is mainly produced in the form of flakes and small plates, with 90% graphite The particle size of the mineral intercalation is below 10μm, and it is difficult for graphite to dissociate completely. Because the particle size of the graphite intercalation is very fine, and the gangue mineral feldspar is strongly altered, fine hematite, mica and graphite flakes are intertwined. At the same time, it makes the beneficiation of the graphite ore very difficult, and the conventional beneficiation process cannot produce high-purity graphite concentrate products.

[0031] The raw ore is first crushed and ground to -0.074mm accounting for 72%, and the slurry is stirred until the slurry concentration is 35% and the pH is 7.2. After re-adjusting the slurry, the slurry enters t...

Embodiment 2

[0036] A fine-scale cryptocrystalline graphite mine in Henan Province, according to analysis, the fixed carbon content in the ore is 10.5%, which belongs to the fine-scale cryptocrystalline graphite ore. The graphite embedded in the raw ore has a very fine particle size, graphite flakes, quartz, mica and other veins Stone minerals are intertwined and grow together, making the graphite ore beneficiation very difficult. The ore can only produce graphite concentrate with a fixed carbon content of about 85% using conventional beneficiation technology.

[0037] The raw ore is first crushed and ground to -0.074mm accounting for 80%, stirred and adjusted to a slurry concentration of 32%, pH is 7.5, and the slurry enters the flotation operation after re-adjustment. The flotation operation is a roughing, a sweeping and a pre-finishing selected. For rough separation operation, first add 500g / t collector, stir for 2min, and flotation time is 8min; add 150g / t collector for the first sweepin...

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Abstract

The invention provides a method for beneficiation of micro-fine particle graphite ores to obtain high-carbon graphite. According to the invention, with cooperation of creative and efficient reagent system and economical and environment-friendly beneficiation processes including crushing, grinding, flotation and regrinding, high-carbon graphite concentrate with fixed carbon content of over 95% is selected from micro-fine particle graphite ores with low content and difficulty in treatment, thus solving the difficulty that the high-carbon graphite concentrate cannot be economically and efficiently produced by adopting micro-fine particle graphite resources.

Description

technical field [0001] The invention belongs to the field of mineral processing, and in particular relates to a mineral processing method of graphite ore. Background technique [0002] Graphite is a non-metallic mineral with many excellent properties, widely used in metallurgy, machinery, petroleum, chemical industry, light industry and national defense and other industrial sectors. Therefore, efficient development and utilization of existing graphite resources is of great significance to the rapid development of my country's industry. Especially since the new century, new graphene materials processed from high-purity graphite have many excellent properties. [0003] Fine-grained graphite ore resources are widely distributed in my country and have large resource reserves. However, due to the difficulty in beneficiation of this kind of graphite resources and the low quality of existing beneficiation products, there are not many developments and utilizations. [0004] The ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B01D21/02B02C23/06B03D1/018B03D101/02B03D103/04
CPCB03B7/00B01D21/02B02C23/06B03D1/018B03D2201/02B03D2203/04
Inventor 曾惠明陈代雄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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