Relationship between copper content of slag and matte in the SKS copper smelting process
来源期刊：International Journal of Minerals Metallurgy and Materials2019年第3期
论文作者：Qin-meng Wang Song-song Wang Miao Tian Ding-xuan Tang Qing-hua Tian Xue-yi Guo
文章页码：301 - 308
摘 要：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.
Qin-meng Wang1,2,3，Song-song Wang1，Miao Tian1，Ding-xuan Tang1，Qing-hua Tian1，Xue-yi Guo1,2
1. School of Metallurgy and Environment, Central South University2. Hunan Key Laboratory of Nonferrous Metal Resources Recycling3. School of Mineral Processing and Bioengineering, Central South University
摘 要：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.
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