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A kind of flotation method of fine grain embedding copper sulfide ore

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

Active Publication Date: 2019-04-23
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 5. The purpose of this invention is to provide a kind of flotation method of fine-grained cloth copper sulfide ore, to solve the technical process of the existing ore-dressing method in the prior art that cannot adapt to the needs of fine-grained cloth copper sulfide ore separation, The existing 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 tailings, resulting in low copper recovery rate. question

Method used

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  • A kind of flotation method of fine grain embedding copper sulfide ore
  • A kind of flotation method of fine grain embedding copper sulfide ore
  • A kind of flotation method of fine grain embedding copper sulfide ore

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Effect test

Embodiment 1

[0034] The raw ore grades in this example are copper 0.92%, gold 0.24g / t, sulfur 9.40%, and iron 15.76%. 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 are chalcocite ore, arsenopyrite, blue chalcocite, natural gold, silver-gold ore; gangue minerals include pyroxene, garnet, quartz, calcite, feldspar, chlorite, epidote, etc. The results of primary mineral phase analysis show that copper sulfide minerals include primary copper minerals and secondary copper minerals, mainly primary copper minerals, copper oxide accounts for 1-3%, chalcopyrite distribution is extremely uneven, mostly in the range of 0.005 ~0.15mm, of which particles smaller than 0.038mm accounted for 89.5%. The beneficiation index of copper is basically not affected by the oxidation of the ore, but the particle size of copper minerals in the ore, the content of secondary ...

Embodiment 2

[0049] The raw ore grades in this example 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, magnetite, and small and trace minerals are bornite, chalcocite, galena, arsenopyrite, natural gold , Silver and gold mines; gangue minerals include garnet, quartz, calcite, feldspar, chlorite, epidote, etc. The results of primary mineral phase analysis show that copper sulfide minerals include primary copper minerals and secondary copper minerals, mainly primary copper minerals, copper oxide accounts for 2.8%, chalcopyrite distribution is extremely uneven, mostly in the range of 0.005-0.15 mm, of which particles smaller than 0.038mm accounted for 86.3%.

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

[0051] A. Grinding: Crushing and grinding the raw ore until the ore particles wit...

Embodiment 3

[0064] The raw ore grade of this embodiment is copper 0.47%, gold 0.15g / t, sulfur 5.34%, and iron 10.86%. Copper ore, followed by blue chalcocite, chalcocite, sphalerite, magnetite, bornite, rutile, ilmenite, a small or trace amount of marcasite, pyrrhotite, limonite, calcite Lead ore, molybdenite, etc. The gangue minerals are mainly quartz and feldspar, followed by sericite, hornblende, staurite, and a small amount of calcite. The ore is mainly composed of chalcopyrite, blue chalcopyrite and copper blue content are small, and a small amount of malachite; some chalcopyrite is fine-grained and very dispersed, and it is not easy to dissociate from the gangue as a monomer, and the chalcopyrite is distributed extremely Inhomogeneous, generally distributed in a sparsely disseminated state, and its particles are relatively fine, mostly distributed between 0.005-0.15mm, of which the particles smaller than 0.038mm account for 99.7%.

[0065] A method for flotation of fine-grained cop...

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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] 1 The present invention belongs to the technical field of mineral separation, and in particular relates to a flotation method for fine-grained copper sulfide ore. Background technique [0002] 2 Copper is a non-ferrous metal closely related to human beings. It is widely used in electrical, light industry, machinery manufacturing, construction industry, national 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] 3 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 dominated by chalcopyrite and chalcocite, and sulfur exists mainly in the form of pyrite and pyrrhotite; For embedded copper sulfide ores, it is difficult to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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