A system for producing spherical microcrystalline graphite

A technology of microcrystalline graphite and production system, applied in the fields of inorganic chemistry, carbon compounds, chemical instruments and methods, etc., can solve the problems of low purity of spherical graphite and complicated production process of spherical graphite, so as to improve the purity, speed up the purification reaction, reduce the The effect of specific surface area

Pending Publication Date: 2018-01-09
HUNAN GUOSHENG GRAPHITE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the complex production process of spherical graphite in the prior art and the low purity of the produced spherical graphite, and provide a spherical graphite with simple production process, high purity and small specific surface area. The spheroidized microcrystalline graphite production system

Method used

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  • A system for producing spherical microcrystalline graphite
  • A system for producing spherical microcrystalline graphite
  • A system for producing spherical microcrystalline graphite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 1~4 As shown, the spheroidized microcrystalline graphite production system provided in this embodiment includes a pretreatment unit, a shaping unit and a purification unit in sequence of production;

[0048] Such as image 3 As shown, the pretreatment unit includes a feeding device 1, and the feeding device 1 includes a feeding device main body 101 and a first feeding port 102 and a second feeding port 103 arranged at both ends of the feeding device 1 main body. The inclination angle of the feed port 102 and the second feed port 103 is 40°~60°, the first feed port 102 and the second feed port 103 are also provided with a shearer 2, and the feeding device 1 also includes The discharge port 104 arranged at the lower end of the main body 101 of the feeding device;

[0049] The shaping unit includes a secondary spheroidizing device. The secondary spheroidizing device includes a first pulverizer, a first classifier, a belt conveyor, and a second classifier ...

Embodiment 2

[0061] The spheroidized microcrystalline graphite production system provided by this embodiment is different from that of Example 1 in that in step S3, the equipment parameters of the ultrasonic reactor are as follows: the frequency is 20KHz, the power is 2000W, the time is 30min, and the acidic aqueous solution is Hydrofluoric acid, the volume content of the hydrofluoric acid is 50%, the liquid-solid ratio of the hydrofluoric acid and the material is 2:1, the temperature of the purification reaction is 60°C, and the reaction time is 2h.

Embodiment 3

[0063] The spheroidized microcrystalline graphite production system provided in this embodiment is different from that of Example 1 in that in step S3, the equipment parameters of the ultrasonic reactor are as follows: the frequency is 50KHz, the power is 1800W, the time is 20min, and the acidic aqueous solution is Hydrofluoric acid, the volume content of the hydrofluoric acid is 40%, the liquid-solid ratio of the hydrofluoric acid and the material is 3:1, the temperature of the purification reaction is 50°C, and the reaction time is 3h.

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Abstract

The invention belongs to the technical field of graphite processing and discloses a system for producing spherical microcrystalline graphite. The system includes a pretreatment unit, a reshaping unitand a purification unit in order according to a production sequence. The pretreatment unit comprises a material supplying device. The purification unit comprises a cyclone collector, a dust remover, adraught fan and an ultrasonic reactor. A purification reaction is a reaction between an acidic aqueous solution and a material under ultrasonic waves. Shearing machines are adopted for coarse crushing of microcrystalline graphite dry concentrate, and the purification reaction is performed in the ultrasonic reactor, and therefore problems that the processing efficiency of crushing machines in spherical graphite production processes is low and that produced spherical graphite is low in purity are solved innovatively, mechanical crushing is formed, physical collision processes are generated, anda microcrystalline graphite raw material is effectively crushed and purified. A production process is simple. The prepared spherical graphite is high in purity and low in specific surface area.

Description

technical field [0001] The invention belongs to the technical field of graphite processing, and in particular relates to a production system of spheroidized microcrystalline graphite. Background technique [0002] Microcrystalline graphite is a polycrystal formed by the aggregation of small crystal grains. The crystal grain size is less than 1 μm and is isotropic. The raw ore has high grade and the carbon content is generally 50-90%. The Lutang mining area in Chenzhou City is the most important graphite mining area in my country. It is known as the "Graphite Capital". The reserves of microcrystalline graphite account for 74.7% of the national microcrystalline graphite reserves, ranking first in the country, and the fixed carbon content is high. Its graphite products enjoy a good reputation at home and abroad. In recent years, the breakthrough development of microcrystalline graphite purification technology, the carbon content of the product has reached more than 99.999%, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/215
Inventor 林前锋李丽萍
Owner HUNAN GUOSHENG GRAPHITE TECH CO LTD
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