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A kind of beneficiation and purification method of high clay fine flake graphite
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A purification method and fine scale technology, applied in flotation, solid separation, etc., can solve the problems of low efficiency, low recovery rate, long process, etc.
Active Publication Date: 2019-05-07
苏州中材非金属矿工业设计研究院有限公司
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[0008] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a method for beneficiation and purification of high-clay fine-scale graphite, which adopts a new process of gravity-flotation combination to effectively solve the problem of high-clay fine-scale graphite directly grinding and floating. Problems such as long process, low efficiency, and low recovery rate, etc., the fixed carbon content of the finally obtained concentrate product is ≥95%, and the recovery rate is ≥90%
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Embodiment 1
[0065] A kind of beneficiation and purification method of high clay fine flake graphite, its process flow chart is as follows figure 2shown, including the following steps:
[0066] (1) High clay fine flake graphite raw ore (fixed carbon content 21.48%, clay mineral content 43%) is crushed to -2cm and then pounded. The pounding concentration is 30%, the amount of dispersant is 1‰, and the pounding time is 20min; classify the rammed slurry, the graded particle size is 20μm, and obtain +20μm product I and -20μm product II;
[0067] (2) Add flotation agents to the -20 μm product II obtained in step (1) for roughing, the amount of quicklime is 2000g / t, the amount of sodium hexametaphosphate is 2000g / t, the amount of kerosene is 100g / t, and the amount of No. 2 oil is 40g / t, the flotation concentration is 11%, the flotation time is 15min, and the rough concentrate A and tailings 1 are obtained;
[0068] (3) Add flotation agents to the +20 μm product I obtained in step (1) for rou...
Embodiment 2
[0079] A kind of beneficiation and purification method of high clay fine flake graphite, its process flow chart is as follows image 3 shown, including the following steps:
[0080] (1) High clay fine flake graphite ore (fixed carbon content 15.57%, clay mineral content 38%) is crushed to -2cm and then mashed. The mashing concentration is 30%, the amount of dispersant is 1‰, and the mashing time is 20min; classify the pulp after ramming, the graded particle size is 15 μm, and obtain +15 μm product I and -15 μm product II;
[0081] (2) Add flotation agents to the -15 μm product II obtained in step (1) for roughing, the amount of quicklime is 2000g / t, the amount of sodium hexametaphosphate is 2000g / t, the amount of kerosene is 100g / t, and the amount of No. 2 oil is 40g / t, the flotation concentration is 10%, and the flotation time is 15min to obtain rough concentrate A and tailings 1;
[0082] (3) Add flotation agents to the +15 μm product I obtained in step (1) for roughing, ...
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Abstract
The invention provides a mineral purification method for high clay fine flake graphite. The mineral purification method for high clay fine flake graphite comprises one-stage grading, two-stage roughing, one-stage scavenging, three-stage regrinding, three-stage scrubbing and six-stage concentrating, wherein the partition sizes are 10-20[mu]m and clay minerals and fine flake graphite are separated as far as possible; the fixed carbon content of the finally obtained concentrate product is greater than or equal to 95%, and the recovery rate is greater than or equal to 90%. With adoption of a reelecting-floating combined process, the problems that the flow is long, the efficiency is low, the recovery rate is low and the like by means of direct grinding-flotation of the high clay fine flake graphite are effectively solved.
Description
technical field [0001] The invention belongs to the technical field of graphite beneficiation and purification, and relates to a method for beneficiation and purification of high-clay fine-scale graphite. Background technique [0002] Graphite is an important non-metallic mineral resource. It has high temperature resistance, corrosion resistance, thermal shock resistance, high strength, good toughness, self-lubricating, thermal conductivity, and electrical conductivity. It is widely used in metallurgy, machinery, electronics, chemical industry, and light industry. , military industry, national defense, aerospace and refractory industries are indispensable non-metallic materials for the development of today's high-tech. [0003] Graphite can be divided into crystalline graphite and aphanitic graphite according to the crystal form, and crystalline graphite can be divided into large flake graphite, fine flake graphite and microcrystalline graphite according to the scale size. ...
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