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Floating method for finely disseminated copper sulfide ores

A technology for copper sulfide and ore, applied in flotation, solid separation and other directions, can solve the problems of inability to meet the needs of fine-grained embedded copper sulfide ore separation, low copper recovery rate, poor selective collection effect, etc.

Active Publication Date: 2017-05-31
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of flotation method of fine-grained cloth copper sulfide ore, so as to solve the problem that the technological process of the existing ore dressing method in the prior art cannot meet the needs of fine-grained cloth copper sulfide ore separation. Some collectors (collecting foaming agents) have poor selective collection effect on fine-grained copper sulfide minerals, resulting in serious loss of fine-grained copper sulfide minerals in the tailings, resulting in a low recovery rate of copper

Method used

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  • Floating method for finely disseminated copper sulfide ores
  • Floating method for finely disseminated copper sulfide ores
  • Floating method for finely disseminated copper sulfide ores

Examples

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Embodiment 1

[0034] The grades of the original ore in this embodiment are 0.92% copper, 0.24 g / t gold, 9.40% sulfur, and 15.76% iron. Its material composition is: the main metal minerals in the ore are pyrite, pyrrhotite, chalcopyrite, magnetite, galena, sphalerite, a small amount of marcasite, bornite, and trace minerals such as chalcocite Minerals, arsenopyrite, blue chalcocite, natural gold, silver-gold ore; gangue minerals include pyroxene, garnet, quartz, calcite, feldspar, chlorite, epidote, etc. The original mineral phase analysis results show that copper sulfide minerals include primary copper minerals and secondary copper minerals. Primary copper minerals are the main ones. Copper oxide accounts for 1 to 3%. The distribution of chalcopyrite is extremely uneven, mostly at 0.005. ~0.15mm, of which particles smaller than 0.038mm account for 89.5%. Copper beneficiation indicators are basically not affected by ore oxidation, but the copper mineral embedded particle size, secondary copp...

Embodiment 2

[0049] The grades of the original ore in this embodiment are copper 0.71%, gold 0.21g / t, sulfur 10.11%, and iron 17.58%. Its material composition is: the main metal minerals in the ore are pyrite, pyrrhotite, chalcopyrite, and magnetite, and a few and trace minerals are bornite, chalcocite, galena, arsenopyrite, and natural gold. , Silver and gold mines; gangue minerals include garnet, quartz, calcite, feldspar, chlorite, epidote, etc. The original mineral phase analysis results show that copper sulfide minerals include primary copper minerals and secondary copper minerals. Primary copper minerals are the main ones. Copper oxide accounts for 2.8%. The distribution of chalcopyrite is extremely uneven, mostly between 0.005-0.15 Among them, particles smaller than 0.038mm accounted for 86.3%.

[0050] A flotation method for fine-grained copper sulfide ore is characterized in that it specifically includes the following steps:

[0051] A. Grinding: crush and grind the raw ore until the...

Embodiment 3

[0064] The grades of the original ore in this example are 0.47% of copper, 0.15g / t of gold, 5.34% of sulfur, and 10.86% of iron. The material composition is as follows: The ore is a hydrothermal vein-dip copper deposit, and the metal minerals are mainly pyrite and yellow. Copper ore, followed by blue chalcocite, chalcocite, sphalerite, magnetite, bornite, rutile, ilmenite, small or trace amounts of marcasite, pyrrhotite, limonite, square Lead ore, molybdenite, etc., gangue minerals are mainly quartz and feldspar, followed by sericite, hornblende, staurolite, and a small amount of calcite. The ore is mainly chalcopyrite, chalcopyrite and copper blue are less in content, and malachite is small; part of chalcopyrite is fine granular and very dispersed, and it is not easy to dissociate from the gangue monomer, and the chalcopyrite is extremely distributed. Uneven, generally sparsely disseminated, the particles are relatively fine, mostly distributed between 0.005 and 0.15mm, of whi...

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Abstract

The invention discloses a floating method for finely disseminated copper sulfide ores. The floating method specifically comprises steps such as ore grinding, roughing, roughed concentrate re-grinding, roughed concentrate copper-sulfur separating and floating and roughened tailing scavenging, wherein multi-time concentrating and multi-time scavenging are performed on roughened concentrate and roughened tailings, cyclic ore dressing is performed on ores, and different ore dressing reagents are matched, so that the recovery rate of raw ores is increased. The floating method has the advantages that: by optimizing an ore grinding process and reasonably adding a collecting agent and a collecting-foaming agent, surface characteristics of ores are improved, selective adsorption, on copper sulfide ore particle surfaces such as fine-grained copper pyrite and chalcocite, of the collecting agent is strengthened, and hydrophobic agglomeration is formed, so that the recovery rate of copper concentrate is increased by 3-6% in comparison with that of an existing ore dressing method.

Description

Technical field [0001] The invention belongs to the technical field of mineral separation, and specifically relates to a flotation method of fine-grained copper sulfide ore. Background technique [0002] Copper is a non-ferrous metal closely related to humans. It is widely used in electrical, light industry, machinery manufacturing, construction industry, defense industry and other fields. At present, nearly half of the copper produced in the world is consumed in the electrical industry. Copper is second only to aluminum in the consumption of non-ferrous metal materials in my country. [0003] Copper ore is mainly divided into two types: copper sulfide ore and copper oxide ore. At present, copper metal is mainly extracted from copper sulfide ore. Copper in copper sulfide ore is generally mainly chalcopyrite and chalcocite, and sulfur is mainly in the form of pyrite and pyrrhotite; For embedded copper sulfide ore, it is difficult to collect fine-grained copper minerals, and it is d...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/012B03B1/00B03D101/02B03D101/04B03D103/04
CPCB03B1/00B03D1/00B03D1/012B03D2201/02B03D2201/04B03D2203/04
Inventor 黄建芬余江鸿吴斌周涛顾小玲孙科峰戚福军徐飞飞黄国贤
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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