Flotation method of aphanitic graphite

A cryptocrystalline graphite and graphite technology, used in flotation, chemical instruments and methods, wet separation, etc., can solve the problems of waste of resources and low grade of concentrate, and achieve improved utilization efficiency, low operating costs, and enhanced mutual effect of action

Active Publication Date: 2016-03-09
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of low concentrate grade and serious waste of resources in the processing of aphanitic graphite in existing graphite sep

Method used

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  • Flotation method of aphanitic graphite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Aphanitic graphite raw ore with a grinding fineness of 2.32 μm and a grade of 86.20% is used as a flotation feed material, and it is added with water to prepare an ore slurry with a concentration of 10% by mass, and a section of high turbulent slurry adjustment is performed. The pulping time is 10 minutes; after the first stage of pulping is completed, the pulp is mixed in the second stage, and diluted with water to a concentration of 5% by mass, and then sodium bicarbonate is added to the pulp to adjust the pH value of the pulp to 8.5, and the dispersant sodium silicate is 1.5kg / t, collector kerosene 50kg / t, foaming agent 2-octanol 360g / t, mixing time 1min. The ore pulp after the two stages of pulping is sent to the roughing equipment for sorting. The roughed concentrate is then subjected to a beneficiation operation. No chemicals are added during the beneficiation process. The roughed tailings and the selected tailings are used together as the final tailing...

Embodiment 2

[0028] Example 2: Aphanitic graphite raw ore with a grinding fineness of 1.05 μm and a grade of 86.94% is used as a flotation feed material, and it is added with water to prepare an ore slurry with a concentration of 10% by mass, and a section of high turbulent slurry adjustment is performed. The pulping time is 10 minutes; the pulp that has completed the first stage of pulping is carried out to the second stage of pulping, and diluted with water to a concentration of 5% by mass, and then sodium carbonate is added to the pulp to adjust the pH value of the pulp to 9.0, and the dispersant sodium silicate, 2kg / t, collector kerosene 30kg / t, foaming agent 2-octanol 500g / t, mixing time 1min. The ore pulp after the two stages of pulping is sent to the roughing equipment for sorting, and the roughed concentrate is then subjected to two beneficiation operations. No chemicals are added during the beneficiation process. The roughed tailings and the selected tailings are used together as ...

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Abstract

The invention discloses a flotation method of aphanitic graphite. The method comprises an ore grinding process, a two-stage pulp mixing process and a flotation process. The method is characterized in that original graphite ores are fed into an ore grinding machine; water is added to a product subjected to ore grinding to obtain ore pulp with the mass percent concentration of 10 to 50%; then the ore pulp is fed into a first-stage high-turbulence pulp mixing device to stir and mix; the oil pulp subjected to the first-stage mixing is fed into a second-stage pulp mixing device, and water is added to the second-stage pulp mixing device to dilute until the mass percent concentration is 5 to 10%; a PH regulator, a dispersing agent, a collecting agent and a foaming agent are sequentially added to the oil pulp; the oil pulp subjected to the second-stage mixing is fed into a rough selecting device to sort; the roughing concentrate is subjected to multi-stage concentration to obtain the final concentrate; the rougher tailings are subjected to multi-stage scavenging to obtain the final tailings. According to the method, the high-turbulence pulp mixing method and the flotation method are combined to achieve high-precision sorting of the aphanitic graphite, and the problem of efficient sorting of the aphanitic graphite can be solved.

Description

technical field [0001] The invention relates to a graphite sorting method, in particular to a high-efficiency flotation method suitable for aphanitic graphite. Background technique [0002] Due to its high temperature resistance, corrosion resistance, thermal shock resistance, good electrical conductivity, thermal conductivity, lubricity and many other special properties, graphite has become an indispensable conductive, fire-resistant, Lubricating, sealing materials and materials of construction. my country is a country with large natural graphite resources, and its reserves, output and export volume all rank first in the world, but the overall level of my country's graphite industry is still at a middle level in the world. [0003] According to the different degree of graphite crystallization, it can be divided into two types: crystalline graphite and aphanitic graphite. Among them, the crystal grain size of aphanitic graphite is extremely fine, usually less than 1 μm, and...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/018B03D101/02B03D101/04B03D103/04
CPCB03B7/00B03D1/018B03D2201/005B03D2201/007B03D2201/02B03D2201/04B03D2203/04
Inventor 谢广元皇甫京华金明国倪超卜祥宁王伟贺文振刘鹏举
Owner CHINA UNIV OF MINING & TECH
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