Beneficiation method for fine flake graphite ore

A beneficiation method and fine scale technology, applied in flotation, solid separation, grain processing, etc., can solve the problems of low flotation index and long separation process, achieve short beneficiation process, improve production efficiency, and simplify grinding and floating operations Effect

Pending Publication Date: 2021-02-23
凯盛石墨碳材料有限公司
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a fine-scale graphite ore beneficiation method for the existing fine-scale graphite ore beneficiation process, which has problems such as too long sorting process and low flotation index.

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
  • Beneficiation method for fine flake graphite ore
  • Beneficiation method for fine flake graphite ore
  • Beneficiation method for fine flake graphite ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Fine flake graphite raw ore (grade 5%, from Panzhihua) is crushed, and the fine crushing is carried out by a high-pressure roller mill. After crushing to -1mm, it is pre-screened and inspected by a spiral classifier. It forms a section of closed-circuit grinding with the screening equipment, the material above the +0.5mm screen enters the grinding, the material under the screen (-0.074mm content is 49.52%) enters the slurry mixing tank for slurry mixing (concentration is 8%), and the slurry enters the SF type Flotation machine, add kerosene and 2 # Oil, after fully stirring, carry out roughing, the concentration of roughing is 7.08%, and the amount of kerosene is 375g / t, 2 # The amount of oil used is 55g / t to obtain rough concentrate and tailings 1;

[0029] (2) The coarse concentrate enters the ball mill for regrinding I operation, the regrinding concentration is 32.51%, the grinding fineness is -0.074mm and the content is 68.37%; the regrinding I product is sent ...

Embodiment 2

[0038] (1) The fine flake graphite raw ore (grade 4%) is crushed, and the high-pressure roller mill is used for fine crushing. After crushing to -1mm, pre-screening and inspection screening are carried out by a spiral classifier. The grinding and screening The equipment constitutes a closed-circuit grinding stage, the material on the +0.5mm screen enters the grinding, the material under the screen (-0.074mm content is 50.39%) enters the slurry tank for slurry mixing (concentration is 9%), and the pulp enters KYF / XCF flotation machine, add kerosene and 2 # Oil, after fully stirring, carry out roughing, the concentration of roughing is 8.76%, and the amount of kerosene is 370g / t, 2 # The amount of oil used is 50g / t to obtain rough concentrate and tailings 1;

[0039] (2) Coarse concentrate enters the vertical stirring mill for regrinding Ⅰ operation, the regrinding concentration is 33.58%, the grinding fineness is -0.074mm and the content is 69.79%; the regrinding Ⅰ product is ...

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 relates to a beneficiation method of fine flake graphite ore. The beneficiation method is characterized by comprising the following steps: (1) fine flake graphite raw ore is crushed to -1 mm, through pre-screening and check screening, a mill and screening equipment form closed-circuit ore grinding, -0.5 mm undersize materials are mixed, and 360-390 g / t kerosene and 40-70 g / t 2# oil are added for roughing; (2) the obtained rough concentrate is subjected to five times of grinding and six times of separation, and final concentrate and middlings 6 are obtained; (3) after the ores obtained in the previous three times of flotation are combined and concentrated, the underflow is fed into a flotation machine, and 300-350 g / t of kerosene and 30-60 g / t of 2# oil are added for scavenging at the concentration of 3-5% to obtain scavenged concentrate and tailings 2; (4) after scavenged concentrate and concentrated overflow are combined, the step (1) is returned for screening; and the ores obtained after the last three times of flotation are combined and then returned to a third-time regrinding section. The beneficiation method has the beneficial effects that a high-pressure rollermill is adopted for fine crushing treatment, excessive crushing and less grinding are achieved, the granularity of raw materials entering the mill is controlled through pre-screening and check screening, and the circulating load of the mill is reduced; and subsequent grinding and floatation are simplified, the beneficiation process is short, and the production efficiency is high.

Description

technical field [0001] The invention relates to a graphite ore dressing method, in particular to a fine-scale graphite ore dressing method. Background technique [0002] As a non-metallic material with excellent performance, graphite is widely used in metallurgy, chemical industry, mechanical equipment, new energy vehicles, nuclear power, electronic information, aerospace and national defense and other industries. Fine flake graphite can be used to prepare negative electrode materials in lithium-ion batteries, and its purity requirement can reach more than 99.95%. In addition to mineral processing and purification, chemical purification or physical high-temperature purification is required to meet the purity requirements. Therefore, the higher the graphite concentrate obtained from mineral processing and purification , the cost of subsequent purification is even lower. [0003] Generally, the grade of fine flake graphite ore is low (3%~7%), and the selectivity is lower than...

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
IPC IPC(8): B03B9/00B02C21/00B03D1/00
CPCB03B9/00B02C21/00B03D1/00
Inventor 彭寿任东风文贵强陈涛李新雨李玉峰刘海东王文齐彭旭升刘斌李印龙
Owner 凯盛石墨碳材料有限公司
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