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Wet screening device and graphite ore short-process purification method comprising wet screening

A technology of wet screening and screening device, applied in wet separation, graphite, chemical instruments and methods, etc., can solve the problems of small graphite flakes, long process, high cost, reduce clogging, improve quality, and increase production. rate effect

Inactive Publication Date: 2020-08-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome above-mentioned technical deficiency, propose a kind of wet screening device and the graphite ore short process purification method that comprises wet screening, to solve the graphite flake small, long process, high energy consumption and high cost etc. in the present technology question

Method used

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  • Wet screening device and graphite ore short-process purification method comprising wet screening
  • Wet screening device and graphite ore short-process purification method comprising wet screening
  • Wet screening device and graphite ore short-process purification method comprising wet screening

Examples

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Embodiment 1

[0056] This Example 1 provides a short-process purification method for graphite ore containing wet screening. A graphite ore in Luobei, Heilongjiang is dried, crushed, sieved, shrunk, and dried. The raw ore has a fixed carbon content of 13%. The screen of the sieving device is a single layer with a screen hole diameter of 0.15mm. The embodiment specifically includes the following steps:

[0057] After coarsely selecting 400g of graphite ore, perform four ball milling and four flotation beneficiation processes. The total regrind time is 15 minutes. The flotation product is sieved for 10 minutes by the sieving device (screen aperture 0.15mm), with large scales on the screen Graphite is used as concentrate I; fine-grained graphite under the sieve enters the lower mill for re-grinding, and the fine particles after grinding are subjected to flotation. The process uses 4 grinding and 5 flotation, and the obtained fine graphite is used as concentrate II. After the graphite purification...

Embodiment 2

[0066] This Example 2 provides a short-process purification method for graphite ore containing wet screening, which adopts a process of grinding-flotation-sieving, and fine-grained graphite re-grinding and re-flotation. A certain graphite ore in Luobei, Heilongjiang is obtained by drying, crushing, sieving, shrinking, and drying. The fixed carbon content of the raw ore is 13%. The screen of the sieving device is a single layer with a screen hole diameter of 0.15mm.

[0067] The short-process purification method of graphite ore by wet screening provided in this embodiment specifically includes the following steps:

[0068] Take 400g of raw graphite ore for 8 minutes, and carry out four ball milling and four flotation (four milling and four flotation can produce sufficient quantity and grade of large flake graphite). The total regrind time is 21 min. The flotation product adopts the sieve. The separation device (screen mesh aperture 0.15mm) screens for 10 minutes, the large flake gr...

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Abstract

The invention discloses a wet screening device and a graphite ore short-process purification method comprising wet screening. The process comprises the step of screening after multi-stage ore grindingflotation for less times, wherein coarse grains obtained by screening are directly qualified concentrates, and obtained fine graphite ore enters a short process of regrinding of a lower-stage mill and re-flotation of a flotation machine; according to the process, the graphite ore screening process can be shortened, crystalline flake graphite is protected, the total graphite grade is improved, pulsating slurry feeding is achieved through a longitudinal screen adopted in the screening device, the problem that graphite is prone to settling and lap joint to form false large pieces to block the screen in the transverse screen screening process is effectively solved, the screening index is improved, and energy consumption and cost are reduced.

Description

Technical field [0001] The invention belongs to the field of graphite ore purification, and in particular relates to a wet screening device and a short-flow purification method of graphite ore including wet screening. Background technique [0002] Graphite has stable chemical properties, corrosion resistance, and does not react easily with chemicals such as acids and alkalis. It can be used as electrodes, dry batteries, antiwear agents, lubricants, crucibles, heat exchangers, coolers and other fields. Graphite flakes are shaped like fish scales, belonging to a hexagonal crystal system, with a layered structure. The larger the scales, the higher the value. The large scale graphite resources are relatively scarce. Every effort should be made to protect the large scales from being damaged during the purification process. [0003] The purification of graphite ore generally adopts a multi-stage grinding and multi-stage flotation process. In order to protect the large graphite flakes and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B1/18B07B1/46B03B7/00C01B32/215
CPCB07B1/18B07B1/46B07B1/4609B03B7/00C01B32/215B07B2230/01C01B32/21B07B13/04
Inventor 任子杰马骏辉高惠民周贤武何祥亮
Owner WUHAN UNIV OF TECH
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