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A method for improving beneficiation index of refractory copper sulfide ore

A copper sulfide ore, refractory technology, applied in flotation, solid separation, etc., can solve the problem of low flotation separation efficiency, achieve good inhibition effect, reduce dosage, and high-efficiency flotation

Active Publication Date: 2019-07-23
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for improving the beneficiation index of refractory copper sulfide ore in order to solve the technical problem of low flotation separation efficiency of copper sulfide minerals and gangue minerals such as pyrrhotite and quartz

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Grind a certain copper sulfide ore to -0.074mm, accounting for 65%, add sulfuric acid as a regulator with a concentration of 5% to adjust the pH of the pulp to 5.5, add 2000g / t particle size to -0.010mm, the particle size content accounts for 85%, and the purity is 80% fine-grained serpentine minerals were mixed for 10 minutes, and then 300g / t calcium lignosulfonate, 100g / t butyl xanthate, and 20g / t No. 2 oil were added for rough separation of copper sulfide minerals , to obtain roughing concentrate and roughing tailings. Sodium hexametaphosphate is added to the roughing concentrate for twice beneficiation to obtain the final concentrate. The amount of sodium hexametaphosphate in beneficiation 1 is 400g / t, and the amount of sodium hexametaphosphate in beneficiation 2 is 200g / t. The mid-mine sequence returns to the previous level of operation. Add collector butyl xanthate and foaming agent No. 2 oil to the roughing tailings for two times of sweeping to obtain the final ...

Embodiment 2

[0027] Grind a certain copper sulfide ore to -0.074mm, accounting for 75%, add sulfuric acid as a regulator with a concentration of 8% to adjust the pH of the pulp to 6.8, add 6500g / t particle size to -0.010mm, the particle size content accounts for 95%, and the purity is 90% fine-grained serpentine minerals were mixed for 5 minutes, and then 500g / t calcium lignosulfonate, 120g / t butyl xanthate, and 30g / t No. 2 oil were added for rough separation of copper sulfide minerals , to obtain roughing concentrate and roughing tailings. Add trisodium phosphate to the rough concentrate to carry out twice beneficiation to obtain the final concentrate. The amount of beneficiation 1 trisodium phosphate is 400g / t, the amount of beneficiation 2 trisodium phosphate is 200g / t, and the beneficiation of middle ore Sequentially return to the previous job. Add the collector butyl xanthate and foaming agent No. 2 oil to the roughing tailings for two times of sweeping to obtain the final tailings. ...

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Abstract

The invention provides a method for improving the ore-dressing index of refractory copper sulfide ores and belongs to the technical field of ore-dressing. The method comprises the steps that the copper sulfide ores with gangue mainly including quartz, pyrite and pyrrhotite are levigated; sulfuric acid serving as a pH regulator is added to regulate the pH of ore pulp to be 5-7; micro-size fractionserpentine minerals are added, and stirring pulp-mixing is conducted; and then, calcium lignosulphonate serving as an inhibitor, butyl xanthate serving as a collecting agent and No.2 oil serving as afoaming agent are added for flotation. The effect that micro-size fraction serpentine is more likely to be gathered with gangue minerals including the quartz, the pyrite and the pyrrhotite is utilized, the hydrophilic serpentine is adsorbed on the surface of the gangue minerals to restrain floating of the gangue minerals, and separation of copper sulfide minerals and the gangue minerals includingthe quartz and the pyrrhotite is achieved. The separation index is good, the concentrate grade and recycling rate are both high, meanwhile, waste serpentine minerals are used as the inhibitor, so thatthe dosage of chemical agents is decreased, and the ore-dressing method for the copper sulfide cores is stable, efficient and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for improving the mineral processing index of refractory copper sulfide ore. Background technique [0002] Copper is one of the earliest metals used by human beings. It is also an important raw material for national economic development and national defense security. It is widely used in electrical, light industry, machinery manufacturing, construction industry, national defense industry and other fields. In the consumption of nonferrous metal materials in my country second only to aluminum. my country is a country with large copper resources, but in recent years, the growth rate of copper consumption has been significantly faster than the growth rate of production. With the acceleration of infrastructure construction such as communications and electric power and the popularization of automobiles and information technology products, China's demand for copper p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/02B03D1/018B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03D1/018B03D1/02B03D2201/007B03D2201/02B03D2201/04B03D2201/06B03D2203/02
Inventor 冯博宁湘涵彭金秀郭蔚张文谱罗仙平汪惠惠
Owner JIANGXI UNIV OF SCI & TECH