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At Saganoseki Smelter and Refinery of JX Metals Smelting Co., Ltd., work is underway to increase the ratio of secondary raw materials and to reduce the use of fossil fuels by utilizing the oxidation heat generated during the processing of copper ore. We consider that the copper produced through this unique and environment-friendly “Green Hybrid Smelting” process will meet our dual mission of building stable supply structure to meet the increasing demand while establishing production and supply chain focusing on decarbonization and enabling circular economy. As part of our efforts to increase the recycling ratio, the amount of impurity elements in the secondary raw materials such as nickel, antimony, bismuth, and lead, which can have undesirable effects on copper electrorefining process, is increasing as well. In this paper, the improvements in the capacity of impurity removal in the copper electrorefining process and the precious metal treatment process are described.

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Initiatives to Treat Impurity Elements in Copper Smelting and Refining Process Toward “Green Hybrid Smelting” in JX Metals Corporation

  • 会议论文

  • 发表日期：

    2025年

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  • Atsuki Sado,
  • Keitaro Koga,
  • Akira Ueno,
  • Kodai Nagata,
  • Kota Nakashima,
  • Hidetoshi Sasaoka

摘要

At Saganoseki Smelter and Refinery of JX Metals Smelting Co., Ltd., work is underway to increase the ratio of secondary raw materials and to reduce the use of fossil fuels by utilizing the oxidation heat generated during the processing of copper ore. We consider that the copper produced through this unique and environment-friendly “Green Hybrid Smelting” process will meet our dual mission of building stable supply structure to meet the increasing demand while establishing production and supply chain focusing on decarbonization and enabling circular economy. As part of our efforts to increase the recycling ratio, the amount of impurity elements in the secondary raw materials such as nickel, antimony, bismuth, and lead, which can have undesirable effects on copper electrorefining process, is increasing as well. In this paper, the improvements in the capacity of impurity removal in the copper electrorefining process and the precious metal treatment process are described.