Graphite purification process and graphite

A graphite purification and process technology, applied in the graphite purification process and the graphite field, can solve the problems of difficult wastewater treatment, high purification cost, high equipment requirements, etc., and achieve the effect of less waste alkali, low energy consumption, and fewer processes

Pending Publication Date: 2022-03-22
BTR NEW MATERIAL GRP CO LTD
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a graphite purification process and graphite to solve the problems of high equipment requirements, many processes, difficult wastewater treatment, and high purification costs in the graphite purification method.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Graphite purification process and graphite
  • Graphite purification process and graphite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] A graphite purification process, comprising the steps of:

[0087] A natural graphite raw material with a carbon content of 90%-96% is selected, and the graphite raw material is stirred and mixed with 10% hydrochloric acid solution at a temperature of 60° C. for 2 hours. The first mixed material is obtained; the first mixed material is washed to neutrality in the first step to obtain the first intermediate material.

[0088] The obtained first intermediate material and the sodium hydroxide solution with a mass fraction of 40% were mixed and stirred at a ratio of 1:0.8 to obtain a second mixture; the obtained second mixture was calcined at a temperature of 400° C. for 4 hours at a low temperature.

[0089] Wash the roasted material in the second step, first dissolve the roasted material with water (the mass ratio of material to water is 1:2), and then put it into the reaction kettle with stirring and ultrasonic functions under the conditions of mechanical stirring and ul...

Embodiment 2

[0092] A graphite purification process, comprising the steps of:

[0093] A natural graphite raw material with a carbon content of 90%-96% is selected, and the graphite raw material is stirred and mixed with 10% hydrochloric acid solution at a temperature of 80° C. for 4 hours. The first mixed material is obtained; the first mixed material is washed to neutrality in the first step to obtain the first intermediate material. Wherein, the number of times of washing in the first step is the same as in Example 1.

[0094] The obtained first intermediate material and the sodium hydroxide solution with a mass fraction of 60% were mixed and stirred at a ratio of 1:0.8 to obtain a second mixture; the obtained second mixture was calcined at a temperature of 600° C. for 2 hours at a low temperature.

[0095] Wash the roasted material in the second step, first dissolve the roasted material with water (the mass ratio of material to water is 1:2), and then put it into the reaction kettle wit...

Embodiment 3

[0098] A graphite purification process, comprising the steps of:

[0099] A natural graphite raw material with a carbon content of 90%-96% is selected, and the graphite raw material is stirred and mixed with 5% hydrochloric acid solution at a temperature of 80° C. for 3 hours. The first mixed material is obtained; the first mixed material obtained is washed to neutral in the first step to obtain the first intermediate material. Wherein, the number of times of washing in the first step is the same as in Example 1.

[0100] The obtained first intermediate material and the sodium hydroxide solution with a mass fraction of 50% were mixed and stirred at a ratio of 1:1 to obtain a second mixture; the obtained second mixture was calcined at a temperature of 500° C. for 6 hours at a low temperature.

[0101] Wash the roasted material in the second step, first dissolve the roasted material with water (the mass ratio of material to water is 1:1.5), and then put it into the reaction ket...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of graphite purification, in particular to a graphite purification process and graphite. The purification process comprises the following steps: mixing a graphite raw material with a hydrochloric acid solution, carrying out first-time acid treatment, and carrying out first-step water washing to obtain a first intermediate material; mixing the first intermediate material with an alkali solution, and roasting to obtain a roasted material; adding the roasted material into a reaction kettle, and carrying out second-step water washing under the conditions of mechanical stirring and ultrasonic oscillation until the roasted material is neutral, so as to obtain a second intermediate material; mixing the second intermediate material with a hydrochloric acid solution, performing secondary acid treatment, and performing third-step water washing and drying to obtain graphite. According to the graphite purification process, an alkali-acid method purification process is adopted, the process is few, energy consumption is low, cost is low, the amount of generated waste acid and waste alkali is small, a mechanical stirring and ultrasonic water washing method is adopted for roasted materials after roasting, washing of Na, Si and other elements in the roasted materials can be accelerated, the use amount of water in the water washing process can be reduced, and the discharge amount of waste water is reduced.

Description

technical field [0001] The present application relates to the technical field of graphite purification, in particular to a graphite purification process and graphite. Background technique [0002] Graphite is an allotrope of elemental carbon. Graphite and its products have excellent properties and are widely used. With the rapid development of China's metallurgy, chemical industry, machinery, medical equipment, nuclear energy, automobile, aerospace and other industries, the market demand for graphite and its products is also growing. [0003] There are many ash and volatile substances in natural graphite ore, and the grade of flake graphite is about 2-20% (mostly 5%-10%). The quality of graphite determines the use characteristics and comprehensive performance of graphite materials. The higher the purity of graphite, the higher its application value. Therefore, when the graphite raw material is further processed into a graphite material, technically it must first be purifie...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/215
CPCC01B32/215
Inventor 李松贺胡良友周海辉贺雪琴
Owner BTR NEW MATERIAL GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap