Ore-dressing method for low-grade bauxite

A technology of low-grade bauxite and beneficiation methods, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of water system not being able to form a system, incomplete ore dissociation, difficult equipment maintenance, etc. Achieve the effect of reducing production costs, easy to meet conditions, and low energy consumption

Active Publication Date: 2012-10-24
HENAN DONGDA TECH CO LTD
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Problems solved by technology

[0016] In view of the above situation, in order to solve the defects of the prior art, the object of the present invention is to provide a low-grade bauxite beneficiation method, which can effectively solve the problems of incomplete ore dissociation, difficult equipment maintenance and high energy consumption in the prior art method. , the problem that the water system cannot be self-contained

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  • Ore-dressing method for low-grade bauxite
  • Ore-dressing method for low-grade bauxite

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Embodiment Construction

[0020] The following is attached figure 1 The specific implementation manner of the present invention will be described in further detail.

[0021] The present invention comprises the following steps:

[0022] (1) Crushing and homogenization of bauxite: After the bauxite waste residue is crushed by the bauxite crusher, it is sent to the mixing shed through the transfer belt, and the distribution trolley moves back and forth to distribute the material evenly, so that the silicon-aluminum ratio of the bauxite ( A / S) The deviation value is within ±0.3;

[0023] (2) Selective dissociation of bauxite: The crushed and homogenized bauxite enters the high-pressure roller mill through the upper chamber of the mill, and the ore powder after the roller mill passes through the vibrating screen, and the ore powder that cannot pass through the 6-mesh sieve is re-dissociated. After being rolled by a high-pressure roller mill, the ore powder that can pass through the 6-mesh sieve is metered...

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Abstract

The invention relates to an ore-dressing method for low-grade bauxite, and the method can be used for efficiently solving the problems of incomplete ore dissociation, difficult equipment maintenance, high energy consumption, and no self-contained water system existing in the method in the prior art. The technical scheme of the invention is realized via the following steps of: (1) breaking and homogenizing the bauxite; (2) selectively dissociating the bauxite; (3) floating by virtue of micro-bubbles; (4) discharging a combined-type concentrate; (5) discharging combined-type tailings; and (6) treating and circulating water. The method disclosed by the invention is easily-met in condition, less in power consumption, high in yield, low in pollution, energy-saving and environmentally-friendly;and by utilizing the circulated water, the water consumption is reduced, thus greatly decreasing the production cost.

Description

technical field [0001] The invention relates to a beneficiation method of low-grade bauxite. Background technique [0002] The research literature on bauxite beneficiation technology in my country began in 1973. At that time, mineral engineering experts had foreseen the challenges that bauxite resources would face today. The first industrial test of bauxite flotation was carried out in Xiaoguan Aluminum Mine of China Great Wall Aluminum Corporation in 2000, and the first industrial production line was put into operation in 2002 in the grafted alumina production process of Chalco Zhongzhou Branch. [0003] In terms of production methods, the first generation of bauxite beneficiation technology is based on the grafted alumina production process. Ore process; the flotation process is roughing, rough sweeping, fine 1, fine 2, and fine sweeping five processes, flotation adopts mechanical agitation inflatable flotation cell; fine and tailings are filtered by ceramic filter and ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
Inventor 王秀峰李新华兰建厚李军伟张延喜李民菁赵正权张松茂
Owner HENAN DONGDA TECH CO LTD
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