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Flotation method of cryptocrystalline graphite

A cryptocrystalline graphite, flotation technology, applied in flotation, solid separation and other directions, can solve problems such as high cost and complex process

Pending Publication Date: 2022-03-15
湖南润众新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method needs to use a weak magnetic separator, which makes the process relatively complicated and the cost is high

Method used

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  • Flotation method of cryptocrystalline graphite
  • Flotation method of cryptocrystalline graphite
  • Flotation method of cryptocrystalline graphite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] S1 Adjust the powder of aphanitic graphite (D50≤2μm, fixed carbon≥90%) to a slurry with a concentration of 19wt%, and then add alumina with a particle size of 30 meshes accounting for 1% of the mass of aphanitic graphite, using Grinding is carried out in a vertical stirring mill. The vertical agitating mill adopted during ore grinding is a 1000-liter vertical agitating mill with a linear velocity of 10 m / s and a feed rate of 28 liters / minute. Then dilute the slurry to 15wt%, add alumina with a particle size of 30 meshes accounting for 0.5% of the mass of aphanitic graphite, and use a vertical stirring mill for grinding to obtain slurry I. The vertical agitating mill adopted during ore grinding is a 1000-liter vertical agitating mill with a linear velocity of 10 m / s and a feed rate of 28 liters / min.

[0048]S2 Dilute the slurry I with water to a concentration of 8wt%, and add 1kg of 2-octanol, 1kg of kerosene, 3kg of water glass, and 1.5kg of sodium hexametaphosphate fo...

Embodiment 2

[0056] S1 Adjust the powder of aphanitic graphite (D50≤2μm, fixed carbon≥90%) to a slurry with a concentration of 20wt%, and then add alumina with a particle size of 30 meshes accounting for 1% of the mass of aphanitic graphite. Grinding is carried out in a vertical stirring mill. The vertical agitating mill adopted during ore grinding is a 1000-liter vertical agitating mill with a linear velocity of 10 m / s and a feed rate of 28 liters / minute. Then dilute the slurry to 15wt%, add alumina with a particle size of 30 meshes accounting for 0.5% of the mass of aphanitic graphite, and use a vertical stirring mill for grinding to obtain slurry I. The vertical agitating mill adopted during ore grinding is a 1000-liter vertical agitating mill with a linear velocity of 10 m / s and a feed rate of 28 liters / minute.

[0057] S2 Dilute the slurry I with water to a concentration of 8wt%, and add 1kg of 2-octanol, 1kg of kerosene, 3kg of water glass, and 1.5kg of sodium hexametaphosphate for ...

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Abstract

The invention provides a flotation method of cryptocrystalline graphite, which comprises the following steps: S1, carrying out first-stage ore grinding on the cryptocrystalline graphite to obtain slurry I; s2, the slurry I is subjected to first-stage flotation, and slurry II is obtained; s3, the slurry II is subjected to second-stage ore grinding, and slurry III is obtained; s4, the slurry III is subjected to second-stage flotation, and slurry IV is obtained; s5, an organic solvent capable of being mixed and dissolved with water is added into the slurry IV, then third-section flotation is conducted, and slurry V is obtained; and S6, carrying out filter pressing on the slurry V, and drying to obtain the nano-scale cryptocrystalline graphite. And a surfactant adopted in the third-stage flotation comprises polyethyleneimine.

Description

technical field [0001] The invention relates to a flotation method of aphanitic graphite, which belongs to the field of ore flotation. Background technique [0002] Cryptocrystalline graphite is also called earthy graphite and amorphous graphite. It is produced as a microcrystalline aggregate, which is a graphite crystal whose diameter is less than 1 μm, and whose crystal form can only be seen under an electron microscope. Aphanitic graphite is generally obtained by thermal decomposition of carbon-containing substances in rock formations (such as coal metamorphism); the carbon content in aphanitic graphite is about 60% to 80%, and the ore selectivity is poor. Its conductivity, Thermal conductivity, lubricity, and oxidation resistance are lower than those of crystalline graphite. The crystallization effect of aphanitic graphite minerals is poor, and the grain diameter is very small. In addition, it usually contains quartz, sericite, calcite, limonite, pyrite and clay minera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/02B03D101/02B03D101/04B03D101/06B03D101/00
CPCB03D1/00B03D1/025B03D2201/02B03D2201/04B03D2201/06B03D2201/00
Inventor 洪声安刘洪涛
Owner 湖南润众新材料科技有限公司
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