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Beneficiation method for copper sulfide ore containing easily-sliming gangue minerals

A technology of gangue minerals and beneficiation methods, applied in flotation, solid separation, etc., can solve the problems of gangue ore slime interference, low copper beneficiation index, etc., to enhance floatability, improve copper mineral surface characteristics, and copper beneficiation The effect of high technical indicators

Active Publication Date: 2016-03-30
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to avoid the deficiencies of the prior art, and to provide a method for beneficiation of copper sulfide ore, a gangue mineral that is easy to muddy, to solve the serious interference of gangue ore slime and low copper beneficiation index in the current ore dressing method The problem

Method used

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  • Beneficiation method for copper sulfide ore containing easily-sliming gangue minerals
  • Beneficiation method for copper sulfide ore containing easily-sliming gangue minerals
  • Beneficiation method for copper sulfide ore containing easily-sliming gangue minerals

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Experimental program
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Embodiment 1

[0029] Table 1.1 Dosage of Examples 1-3 / (g / t raw ore)

[0030]

Embodiment 4-6

[0031] Table 1.2 Dosage of Examples 4-6 / (g / t raw ore)

[0032]

[0033] A method for beneficiating copper sulfide ore containing easily muddy gangue minerals, comprising the following steps:

[0034] A. Grinding process: crush the raw ore, and grind the ore until the ore particle size is less than 0.074mm, accounting for 78%, so that the copper sulfide minerals are fully dissociated. For each ton of raw ore, add lime 1500g / t, sodium sulfide 150g / t, butyl xanthate 40g / t, add water to adjust the slurry to a weight concentration of 33%, and the pH value of the slurry is 7.5-8.

[0035] B. Rough separation and pulping and rough separation operation: Add 800g / t of slime dispersant sodium hexametaphosphate, 30g / t of butyl xanthate, O-isopropyl-N-ethyl Thiocarbamate 25g / t, pine oil 30g / t, stirring for 20min, stirring speed controlled at 2000 / min, roughing flotation operation, flotation time 5min, roughing concentrate and roughing tailings .

[0036] C. Sweeping and pulping and ...

Embodiment 2

[0042] The raw ore grade of this embodiment is copper 0.51%, sulfur 4.95%, and its material composition is the same as embodiment 1.

[0043] A method for beneficiating copper sulfide ore containing easily muddy gangue minerals, comprising the following steps:

[0044] Grinding process: crush the raw ore, and grind the ore until the ore particle size is less than 0.074mm, accounting for 76%, so that the copper sulfide mineral is fully dissociated from the monomer. In terms of raw ore, add lime 2000g / t, sodium sulfide 180g / t, butyl xanthate 30g / t, add water to adjust the slurry to a weight concentration of 35%, and the pH value of the slurry is 7.5-8.

[0045] B. Rough separation and pulping and rough separation operation: Add 1000g / t of slime dispersant sodium hexametaphosphate, 40g / t of butyl xanthate, N,N-diethyl dithio Propionitrile carbamate 20g / t, pine alcohol oil 15g / t, stirring for 20min, stirring speed controlled at 2200 / min, roughing flotation operation, flotation ti...

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Abstract

The invention relates to a beneficiation method for copper sulfide ore containing easily-sliming gangue minerals. According to the method, lime is adopted as pH regulator and pyrite depressant of flotation pulp of the copper sulfide ore containing the easily-sliming gangue minerals; sodium sulfide serves as activator of a small number of copper oxide minerals in the ore; sodium hexametaphosphate, sodium silicate or ethylenediamine serves as gangue slurry dispersant; a combination of butyl xanthate and other collectors serves as a collector of copper sulfide minerals; terpernic oil serves as foaming agent. The ore is subjected to primary grinding, primary roughing, primary scavenging and three-time concentration; the ore pulp is subjected to strong stirring and pulp mixing before starting to be subjected to primary roughing, primary scavenging and primary concentration, so that copper contained in the ore is efficiently recovered. According to the method, through reasonable combination and addition of chemicals, the ore grinding and pulp mixing process is strengthened, the adverse influence of gangue slurry on copper sulfide mineral floatation is eliminated, the surface characteristics of copper sulfide minerals are improved, the preferential adsorption of the collector on the surfaces of the copper sulfide minerals is enhanced, and accordingly, compared with a conventional method, the copper grade and the copper recovery rate of copper concentrate are substantially increased.

Description

technical field [0001] The invention belongs to the field of mineral processing, and relates to a mineral processing method, in particular to a mineral processing method of copper sulfide ore containing easy-mud gangue minerals. Background technique [0002] Copper is a non-ferrous metal that is very closely related to human beings. It is widely used in the electrical industry, national defense industry, energy industry, construction industry, medical equipment, light industry and other fields. At present, nearly half of the copper produced in the world is consumed In the electrical industry. Copper ranks second only to aluminum in the consumption of non-ferrous metal materials in my country. [0003] Copper metal is mainly extracted from copper ore. According to the technical conditions of dressing and smelting, copper ore is divided into three natural types according to the ratio of copper sulfide and copper oxide. That is, sulfide ore, containing less than 10% copper ox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/018B03D101/02B03D101/06
Inventor 黄建芬余江鸿周涛吉鸿安戚福军王永斌孙科峰黄国贤徐飞飞胡景英
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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