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Two-stage acidification and flotation process of nickel-copper sulfide ore

A nickel sulfide and flotation technology, which is applied in flotation, solid separation, grain processing, etc., can solve the problems of affecting chemicals, reducing the buoyancy of minerals, and restricting the recovery rate of beneficiation, so as to improve the grade of concentrate and reduce the floatability. sexual effect

Active Publication Date: 2017-04-26
JINCHUAN GROUP LIMITED
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Problems solved by technology

In the alkaline medium, a large amount of OHˉ is adsorbed on the surface of ore particles, and the hydration is enhanced, which affects the interaction between the agent and the surface of the mineral, resulting in a decrease in the buoyancy of the mineral, which seriously restricts the improvement of the recovery rate of ore dressing.

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  • Two-stage acidification and flotation process of nickel-copper sulfide ore

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0022] The second-stage acid-added flotation process includes: raw ore preparation stage, acid-added pulping stage, flotation stage and waste gas treatment stage;

[0023] The preparation stage of raw ore includes grinding and grading process to provide pulp with required fineness and concentration for the flotation machine;

[0024] The stage of adding acid and sizing includes the process of adding acid to the pulp and adding the flotation agent, so that the pH value of the pulp meets the requirements of acid flotation, and at the same time, the flotation agent added to the pulp is stirred evenly;

[0025] The flotation stage includes one roughing, two beneficiation, two sweeps, acid addition of concentrate and chemical addition of sweep, so as to obtain the final concentrate product and tailings waste;

[0026] The waste gas treatment stage is to absorb the hydroge...

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Abstract

The invention relates to a two-stage acidification and flotation process of nickel-copper sulfide ore. According to the two-stage acidification and flotation process of the nickel-copper sulfide ore, after a section of tailings are grinded and graded, acid is added to ore pulp to adjust the ore pulp, then an efficient capture agent CN609, an acid-resistant efficient foaming agent LX108 and a butyl xanthate capture agent are added, and after the flotation process including one time of roughing, two times of concentration and two times of scavenging, the final concentrate product and tailing waste are obtained. Hydrogen sulfide gas generated after the sulfuric acid is added to the ore pulp is absorbed through a sodium hydroxide solution, so that exhaust gas exhausted to the atmosphere meets the requirement of environment protection.

Description

technical field [0001] The invention relates to a flotation process, in particular to a two-stage acid-added flotation process, which is suitable for the flotation of nickel-copper sulfide ore. Background technique [0002] The traditional flotation process of nickel-copper sulfide ore is alkaline medium flotation, which usually adopts the process flow of stage grinding and stage flotation. In the alkaline medium, a large amount of OHˉ is adsorbed on the surface of the ore particles, and the hydration is enhanced, which affects the interaction between the agent and the surface of the minerals, resulting in a decrease in the floatability of the minerals, which seriously restricts the improvement of the beneficiation recovery rate. With the intensification of lean ore mining, the economy of beneficiation is declining year by year, and it is imminent to improve the beneficiation index. Therefore, it is particularly urgent to seek a flotation process that can improve the benefi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03D1/012B02C21/00B03D101/02B03D103/02
CPCB02C21/00B03D1/012B03D1/02B03D2201/007B03D2201/02B03D2203/02
Inventor 杨志强张秀品王玛斗杨洪殷建强欧晓玲吴鹏云赖秋生金小容周虎英辛云霞
Owner JINCHUAN GROUP LIMITED
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