Beneficiation method for efficiently recovering copper from copper smelting slags

A technology for copper smelting slag and beneficiation method, which is applied in the direction of solid separation, etc., can solve the problems of poor adaptability and large fluctuation of copper flotation index, and achieves the effects of stable operation, improved comprehensive utilization of resources and advanced technology.

Inactive Publication Date: 2020-03-17
COLLEGE OF APPLIED SCI JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention develops a gravity separation + flotation combined beneficiation method in view of the current common grinding + flotation process to recover copper in copper smelting slag, which has large fluctuations in flotation index and poor adaptability.

Method used

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  • Beneficiation method for efficiently recovering copper from copper smelting slags
  • Beneficiation method for efficiently recovering copper from copper smelting slags
  • Beneficiation method for efficiently recovering copper from copper smelting slags

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] ① Steps: coarse grinding + classification, copper smelting slag 1 is fed into coarse grinding 2, and the ore discharge product 3 of coarse grinding 2 enters classification 4, and overflow product 5 and grit 6 are obtained, and grit 6 returns to coarse grinder 2 Operation, the fineness of the overflow product 5 is -0.074mm, accounting for 58.62%;

[0024] ② Step: re-election in the spiral chute, adding water to the overflow product 5 to adjust the mass concentration of the pulp to 28.81%, and then feeding it into the re-election 7 operation in the spiral chute to obtain the gravity-selected copper concentrate 8 and the gravity-selected tailings 9;

[0025] ③ Step: fine grinding, feeding the gravity separation tailings 9 into the fine grinding 10, and the fineness of the discharge product 11 of the fine grinding 10 is -0.045mm, accounting for 81.85%;

[0026] ④ Step: Priority flotation, add Z-200 agent 80g / t, isopentyl xanthate 20g / t, terpineol oil 20g / t in sequence in pr...

Embodiment 2

[0034] ① The fineness of the overflow product 5 in the step is -0.074mm, accounting for 61.37%;

[0035] ② In the step, the mass concentration of the pulp after adding water to the overflow product 5 is 29.32%;

[0036] ③The fineness of the ore discharge product 11 in the step is -0.045mm and accounts for 84.53%;

[0037]④, ⑤, and ⑥ steps are only different in the amount of the following medicaments in Example 1, and all the other are the same as in Example 1, being respectively: ④ the consumption of medicaments in the step is: Z-200 medicament 90g / t, isoamyl xanthate 30g / t, Terpineol oil 30g / t; ⑤The dosage of medicament in the step is: sodium sulfide 650 / t, isopentyl xanthate 40g / t, butyl ammonium black medicine 20g / t, terpineol oil 15g / t; ⑥The amount of medicament in the step The dosage is: sodium sulfide 320g / t, isopentyl xanthate 20g / t, butylammonium black medicine 10g / t;

[0038] 7. step is identical with embodiment 1;

[0039] The processing of middle ore is identical...

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Abstract

The invention relates to a beneficiation method for efficiently recovering copper from copper smelting slags. The beneficiation method is particularly suitable for further copper recovering from the copper smelting slags generated through carrying out copper pyrometallurgy processing on copper concentrate. In the invention, rough grinding and grading are adopted for obtaining selected raw materials reselected by a spiral chute, reselected copper concentrate is obtained through reselection operation, and then preferential flotation copper concentrate, flotation copper concentrate and final tailings are obtained through fine grinding, preferential flotation, one-time roughing, two-time scavenging and three-time concentration. In the preferential flotation, roughing and scavenging processes,a combined collecting agent is used in cooperation, middlings successively return to a last operation section, and finally qualified copper concentrate is obtained. The method is advanced in process,high in treatment capacity, good in separation effect, and stable in operation, copper in the copper smelting slags can be effectively recycled, a Cu grade of the copper concentrate is greater than orequal to 23.22%, and a Cu recycling rate of the copper concentrate is greater than or equal to 95.13%. And valuable resource recovery efficiency of the smelting slags is improved, and economic benefits are brought to enterprises.

Description

technical field [0001] The invention relates to a beneficiation method for efficiently recovering copper from copper smelting slag, and is particularly suitable for further recovering copper from copper smelting slag produced by pyro-copper smelting treatment of copper concentrate. Background technique [0002] 80% of the world's copper is produced by pyrometallurgy. A large amount of copper slag is produced in the process of pyrometallurgy. On average, 2.2t of copper slag will be produced for every 1 ton of metallic copper produced. With the rapid development of my country's industry, the demand for copper continues to increase, and converter blowing has become the bottleneck of the entire pyrometallurgy of copper. In order to increase the demand for copper output, certain measures are often taken to coordinate the production cycle of the two converters and shorten the blowing process. Practice time. The shortening of blowing time leads to large changes in slag composition,...

Claims

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Application Information

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IPC IPC(8): B03B9/04
CPCB03B9/04
Inventor 胡海祥李广
Owner COLLEGE OF APPLIED SCI JIANGXI UNIV OF SCI & TECH
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