A New Process of Leaching Copper and Cobalt from Copper Cobalt Oxide Ore in DR Congo

CAO Yaohua; WANG Wei; LIU Hongzhao; LIU Lin; ZHANG Bo

doi:10.3969/j.issn.1000-6532.2024.01.016

2024 No. 1

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Article navigation > Multipurpose Utilization of Mineral Resources > 2024 > 45(1): 135-138

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CAO Yaohua, WANG Wei, LIU Hongzhao, LIU Lin, ZHANG Bo. A New Process of Leaching Copper and Cobalt from Copper Cobalt Oxide Ore in DR Congo[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(1): 135-138. doi: 10.3969/j.issn.1000-6532.2024.01.016

Citation:

CAO Yaohua, WANG Wei, LIU Hongzhao, LIU Lin, ZHANG Bo. A New Process of Leaching Copper and Cobalt from Copper Cobalt Oxide Ore in DR Congo[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(1): 135-138. doi: 10.3969/j.issn.1000-6532.2024.01.016

A New Process of Leaching Copper and Cobalt from Copper Cobalt Oxide Ore in DR Congo

1.
Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, CAGS, China National Engineering Research Center for Utilization of Industrial Minerals, Key Laboratory of Comprehensive Utilization of Gold Resource in Henan Province, Key Laboratory for Polymetallic Ores' Evaluation and Utilization, MNR, Zhengzhou 450006, Henan , China

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Corresponding author: WANG Wei, wangwei4034@163.com

Received Date: 25 May 2021

Publish Date: 25 February 2024

Abstract

Abstract

This is an article in the field of metallurgical engineering. A copper cobalt ore Congo is an oxide ore with Cu 3.43% and Co 0.42% respectively. In this paper, the five stage cycle leaching process of leaching solution was used for the copper and cobalt leaching. The optimum conditions were as follows: the amount of sulfuric acid was 7.4% of the ore mass, the amount of sodium sulfite was 1.68 times of the theoretical amount, the grinding particle size of -74 μm accounts for 75%, leaching temperature was 45 ℃, the single-stage leaching time was 4 hours, and the liquid-solid volume mass ratio was between 2/1 and 3/1, the results showed that the leaching rate of copper and cobalt were 96.85% and 95.67% respectively. According to this leaching process, the amount of sulfuric acid was reduced by 6 kg/t compared with the primary leaching, and the total solution amount in the leaching process was reduced by about 1/4, which made the amount of subsequent cobalt precipitation and copper extraction solution was reduced.
- Metallurgical engineering /
- Copper-cobalt oxide ore /
- Cpper /
- Cobalt /
- Sodium sulfite + sulfite /
- Countercurrent leaching

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References

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