A kind of purification method of aphanitic graphite flotation concentrate

A cryptocrystalline graphite, flotation concentrate technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as inability to reflect value, high impurity content, and fine graphite crystals

Active Publication Date: 2017-09-26
HUNAN RES INST FOR NONFERROUS METALS
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of fine graphite crystals and high impurity content, the effect obtained by the above purification method is not ideal. Therefore, in actual production, it can only be used as a low-end battery filling material, and its true value cannot be reflected.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The raw ore is aphanitic graphite flotation concentrate obtained from flotation of aphanitic graphite ore in Lutang Town, Chenzhou, Hunan, with a C grade of 89.62%. The present invention adopts the method of regrinding-heating rinsing-pickling-reverse flotation to purify the mine. This process provides a new process for the purification of aphanitic graphite flotation concentrate. The chemical multi-element analysis of aphanitic graphite flotation concentrate is shown in Table 1.

[0023] Table 1 Chemical multi-element analysis of raw ore

[0024] element

C

al 3 o 2

SiO 2

CaO

MgO

K 2 o

S

TF

content / %

89.80

0.72

8.17

0.21

0.61

0.11

0.15

0.23

[0025] Process flow:

[0026] 1) The aphanitic graphite flotation concentrate is concentrated to a concentration of 65% by a thickener, and then enters an ultrafine vertical mill for grinding to obtain a grinding product with a particle size of 0....

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

No PUM Login to view more

Abstract

The invention discloses a method for purifying aphanitic graphite flotation concentrate. The method includes steps of (1), removing reagents by means of ultra-fine grinding; (2), carrying out two-section heating rinsing and concentrating on the aphanitic graphite flotation concentrate; (3), soaking the aphanitic graphite flotation concentrate in acid at the constant temperatures of 90 DEG C for 1 hour; (4), removing impurities by means of reverse flotation. The method has the advantages that the aphanitic graphite flotation concentrate with the carbon (C) content of 85-90% is used as a raw material and is treated by the aid of processes for 'removing the reagents by means of ultra-fine grinding, carrying out the two-section heating rinsing and concentrating, soaking the aphanitic graphite flotation concentrate at the constant temperatures of 90 DEG C for 1 hour and removing the impurities by means of reverse flotation' for characteristics of small particle sizes of graphite crystals in the aphanitic graphite flotation concentrate, stable properties at the normal temperatures, good inherent flotability, the residual flotation reagents on the surfaces of minerals and the like, and accordingly high-purity graphite concentrate with the carbon (C) content higher than 99% can be obtained.

Description

technical field [0001] The invention belongs to the field of mineral processing of graphite ore, and in particular relates to a method for purifying aphanitic graphite flotation concentrate. Background technique [0002] High-purity graphite has the advantages of high strength, good thermal shock resistance, high temperature resistance, oxidation resistance, small resistivity, corrosion resistance, and easy precision machining. It is an ideal inorganic non-metallic material. At present, the raw materials for obtaining high-purity graphite at home and abroad are mainly large flake graphite ore. Graphite purification is to take effective means to remove impurities. The purification methods of large flake graphite ore include chemical purification and physical purification. Chemical purification includes: alkali acid method, hydrofluoric acid method, chlorination roasting method; physical method purification includes: High temperature method (also known as thermal method). Ho...

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 Patents(China)
IPC IPC(8): C01B32/215
CPCC01P2006/80C01P2006/90
Inventor 魏党生叶从新骆任韦华祖张丽敏郭玉武江锋蒋素芳朱永筠
Owner HUNAN RES INST FOR NONFERROUS METALS
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