Pre-separation and waste-discarding beneficiation method for low-grade copper sulphide ores

A beneficiation method, copper sulfide technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problem that copper sulfide ore cannot meet the requirements of copper grade for beneficiation in a concentrator, and low-grade copper sulfide ore is not suitable Problems such as pre-selection of discarding methods and difficulty of pre-selection of discarding, etc., to achieve the effect of easy industrial production, low cost and high production capacity

Inactive Publication Date: 2021-01-26
GANZHOU NONFERROUS METALLURGICAL RES INST
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The copper grade in low-grade copper sulfide ore is about 0.13-0.14%, and the copper grade is far below the minimum cut-off grade required for copper sulfide mining (the cut-off grade for copper ore mining is 0.2-0.3%). Low-grade copper sulfide ore Because it cannot meet the requirements of the copper grade in the concentrator, it cannot directly enter the concentrator for separation, resulting in many low-grade copper sulfide ores not being mined and utilized, resulting in a large waste of resources
[0004] At present, low-grade copper sulfide ores are difficult to pre-select and discard due to their low grade, large amount of waste rock, and relatively large particle size range after crushing. At present, there is no pre-selection and discarding method suitable for low-grade copper sulfide ores

Method used

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  • Pre-separation and waste-discarding beneficiation method for low-grade copper sulphide ores
  • Pre-separation and waste-discarding beneficiation method for low-grade copper sulphide ores
  • Pre-separation and waste-discarding beneficiation method for low-grade copper sulphide ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The comprehensive copper grade of the low-grade copper sulfide ore raw ore used in this embodiment is 0.14%, and it is pre-selected and discarded, and the steps are as follows:

[0058] 1. The raw ore of low-grade copper sulfide ore is crushed with a jaw crusher, and then the crushed product is dry-screened with a sieve with an aperture of 60mm, and the product on the sieve with a particle size of +60mm is returned to the crusher for crushing until all the ore passes through A sieve with a hole diameter of 60mm can obtain -60mm particle size ore.

[0059] 2. Dry-screen the -60mm ore with a sieve with a hole diameter of 10mm to obtain -10mm ore and -60+10mm ore.

[0060] 3. The -10mm grain size ore is sequentially wet-screened with screens with apertures of 6mm, 2mm, and 0.15mm to obtain -10+6mm grain size ore, -6+2mm grain size ore, -2+0.15mm grain size ore Ore and -0.15mm grain grade ore, of which -0.15mm grain grade ore is primary mud (copper grade see Table 1), dire...

Embodiment 2

[0069] The comprehensive copper grade of the low-grade copper sulfide ore raw ore used in this embodiment is 0.13%, and it is subjected to joint pre-selection and discarded, and the steps are as follows:

[0070] 1. The raw ore is crushed with a jaw crusher, and then the crushed product is dry screened with a sieve with an aperture of 60mm, and the product on the sieve with a particle size of +60mm is returned to the crusher for crushing until all the ore passes through the sieve with an aperture of 60mm net to get -60mm grain grade ore.

[0071] 2. Dry-screen the -60mm ore with a sieve with a hole diameter of 10mm to obtain -10mm ore and -60+10mm ore.

[0072] 3. Wet-screen the ore with a particle size of -10mm in turn using sieves with apertures of 6mm, 2mm, and 0.15mm to obtain ore with a particle size of -10+6mm, ore with a particle size of -6+2mm, and ore with a particle size of -2+0.15mm Ore and -0.15mm grain grade ore, of which -0.15mm grain grade ore is primary mud (c...

Embodiment 3

[0081] The comprehensive copper grade of the low-grade copper sulfide ore raw ore used in this embodiment is 0.13%, and it is subjected to joint pre-selection and discarded, and the steps are as follows:

[0082] 1. The raw ore is crushed with a jaw crusher, and then the crushed product is dry screened with a sieve with an aperture of 60mm, and the product on the sieve with a particle size of +60mm is returned to the crusher for crushing until all the ore passes through the sieve with an aperture of 60mm net to get -60mm grain grade ore.

[0083] 2. Dry screen the -60mm size ore with a 10mm sieve to obtain -10mm size ore and -60+10mm size ore, and then use the -60+10mm size ore to use a 32mm sieve Perform dry sieving to obtain -60+32mm ore and -32+10mm ore.

[0084] 3. Wet screen the -10mm grain grade ore in turn with sieves with apertures of 6mm, 2mm and 0.15mm to obtain -10+6mm grain grade ore, -6+2mm grain grade ore, -2+0.15mm grain grade ore Grade ore and -0.15mm grain g...

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Abstract

The invention relates to the technical field of beneficiation, and provides a pre-separation and waste-discarding beneficiation method for low-grade copper sulphide ores. According to the method, low-grade copper sulfide ores are screened into -60+10 mm, -10+6 mm, -6+2 mm, -2+0.15 mm and -0.15 mm ores through crushing and repeated screening, the -0.15 mm ores are regarded as primary slime and aredirectly used as qualified ores, the -2+0.15 mm, -6+2 mm and -10+6 mm ores are subjected to pre-separation and waste discarding through jigging, and the -60+10 mm ores are subjected to pre-separationand waste discarding through intelligent ray ore separation, and the copper grade of the finally obtained qualified ores is 0.27% or above. According to the provided method, pre-separation of the copper sulphide ore and a large amount of barren rock is realized, the copper grade of the selected ores is improved, the amount of ores entering a concentrating mill for grinding and separation is reduced, operation is stable, the cost is low and industrial production is realized easy.

Description

technical field [0001] The invention relates to the technical field of ore dressing, in particular to a method for pre-selecting low-grade copper sulfide ore and throwing waste. Background technique [0002] At present, the copper ores mined and utilized in my country are mainly copper sulfide ores and copper oxide ores, among which copper sulfide ores are the main minerals mined and utilized. In recent years, with the mining of copper sulfide deposits, high-grade high-quality copper sulfide ores have become less and less. Waste rock and low-grade copper sulfide ores. [0003] The copper grade in low-grade copper sulfide ore is about 0.13-0.14%, and the copper grade is far below the minimum cut-off grade required for copper sulfide mining (the cut-off grade for copper ore mining is 0.2-0.3%). Low-grade copper sulfide ore Due to the inability to meet the requirements of the selected copper grade in the concentrator, it cannot directly enter the concentrator for sorting, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B1/00
CPCB03B7/00B03B1/00
Inventor 袁亚君李平李振飞张婷沈新春王强强李秀珍陈世宁张文谱
Owner GANZHOU NONFERROUS METALLURGICAL RES INST
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