Relationship between copper content of slag and matte in the SKS copper smelting process

Qin-meng Wang; Song-song Wang; Miao Tian; Ding-xuan Tang; Qing-hua Tian; Xue-yi Guo

doi:10.1007/s12613-019-1738-4

Volume 26 Issue 3

Mar. 2019

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2019 > 26(3): 301-308

Qin-meng Wang, Song-song Wang, Miao Tian, Ding-xuan Tang, Qing-hua Tian, and Xue-yi Guo, Relationship between copper content of slag and matte in the SKS copper smelting process, Int. J. Miner. Metall. Mater., 26(2019), No. 3, pp. 301-308. https://doi.org/10.1007/s12613-019-1738-4

Cite this article as:

Qin-meng Wang, Song-song Wang, Miao Tian, Ding-xuan Tang, Qing-hua Tian, and Xue-yi Guo, Relationship between copper content of slag and matte in the SKS copper smelting process, Int. J. Miner. Metall. Mater., 26(2019), No. 3, pp. 301-308. https://doi.org/10.1007/s12613-019-1738-4

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Research Article

Relationship between copper content of slag and matte in the SKS copper smelting process

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Corresponding author:
Xue-yi Guo E-mail: xyguo@csu.edu.cn
Received: 21 September 2018; Revised: 18 December 2018; Accepted: 19 December 2018

Abstract

Abstract

In the newly developed oxygen-enriched bottom-blowing copper smelting process (also known as the SKS copper smelting process), Cu loss in slag is one of the most concerning issues. This paper presents our research results concerning the relationship between the Cu content of the matte and slag in the SKS process; the results are based on actual industrial production in the Dongying Fangyuan copper smelter. The results show that the matte grade strongly influences Cu losses in slag. The dissolved and entrained losses account for 10%-20% and 80%-90% of the total SKS industrial Cu losses in slag, respectively. With increasing matte grade, the dissolved and entrained Cu losses in the SKS slag both increase continuously. When the matte grade is greater than 68%, the content of Cu in the smelting slag increases much more dramatically. To obtain a high direct recovery of copper, the matte grade should be less than 75% in industrial SKS copper production.
- copper smelting;
- oxygen-enriched bottom-blowing;
- matte grade;
- Cu loss;
- SKS process

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