Rapid removal of copper impurity from bismuth–copper alloy melts via super-gravity separation

Xiao-chun Wen; Lei Guo; Qi-peng Bao; Zhan-cheng Guo

doi:10.1007/s12613-020-2118-9

Volume 28 Issue 12

Dec. 2021

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2021 > 28(12): 1929-1939

Xiao-chun Wen, Lei Guo, Qi-peng Bao, and Zhan-cheng Guo, Rapid removal of copper impurity from bismuth–copper alloy melts via super-gravity separation, Int. J. Miner. Metall. Mater., 28(2021), No. 12, pp. 1929-1939. https://doi.org/10.1007/s12613-020-2118-9

Cite this article as:

Xiao-chun Wen, Lei Guo, Qi-peng Bao, and Zhan-cheng Guo, Rapid removal of copper impurity from bismuth–copper alloy melts via super-gravity separation, Int. J. Miner. Metall. Mater., 28(2021), No. 12, pp. 1929-1939. https://doi.org/10.1007/s12613-020-2118-9

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Research ArticleCover Article

Rapid removal of copper impurity from bismuth–copper alloy melts via super-gravity separation

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Corresponding authors:
Lei Guo E-mail: leiguo@ustb.edu.cn

Zhan-cheng Guo E-mail: zcguo@ustb.edu.cn
Received: 26 April 2020; Revised: 29 May 2020; Accepted: 15 June 2020; Available online: 17 June 2020

Abstract

Abstract

A green method of super-gravity separation, which can enhance the filtration process of bismuth and copper phases, was investigated and discussed for the rapid removal of copper impurity from bismuth–copper alloy melts. After separation by the super-gravity field, the bismuth-rich liquid phases were mainly filtered from the alloy melt along the super-gravity direction, whereas most of the fine copper phases were retained in the opposite direction. With optimized conditions of separation temperature at 280°C, gravity coefficient at 450, and separation time at 200 s, the mass proportion of the separated bismuth from the Bi–2wt%Cu and Bi–10wt%Cu alloys respectively reached 96% and 85% , which indicated the minimal loss of bismuth in the residual. Simultaneously, the removal ratio of impurity copper from the Bi–2wt%Cu and Bi–10wt%Cu alloys reached 88% and 98%, respectively. Furthermore, the separation process could be completed rapidly and is environmentally friendly and efficient.
- rapid removal;
- copper impurity;
- bismuth–copper alloys;
- filtration;
- super-gravity field

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References

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