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In 2005, Niihama NickelNickel Refinery (NNRNiihama Nickel Refinery (NNR)) of Sumitomo MetalMetals Mining Co., Ltd. started to treat nickelNickel-cobaltCobalt mixed sulfideMixed sulfide (MS) through Coral Bay NickelNickel Corporation, which was established in the Republic of the Philippines. The increase of MS productionProductions has significantly expanded NNRNiihama Nickel Refinery (NNR)’s plant capacity of electrolytic nickelNickel. In processingProcessing nickel matteNickel matte and MS, there were concerns about the deterioration of the nickel recoveryNickel recovery ratio due to differences in their reactivity in the chlorine leach circuit. In response to this, NNRNiihama Nickel Refinery (NNR) improved productionProductions efficiency through optimizing the leachingLeaching method and implementing equipment modifications, and accomplished an increase in the productionProductions capacity of electrolytic nickelNickel to 65,000 tpa.

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Expansion of Electrolytic Nickel Production Capacity Through MCLE Process Improvement

  • 会议论文

  • 发表日期：

    2025年

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  • S. Yamada,
  • T. Ooishi,
  • Y. Sato,
  • T. Yamamoto

摘要

In 2005, Niihama NickelNickel Refinery (NNRNiihama Nickel Refinery (NNR)) of Sumitomo MetalMetals Mining Co., Ltd. started to treat nickelNickel-cobaltCobalt mixed sulfideMixed sulfide (MS) through Coral Bay NickelNickel Corporation, which was established in the Republic of the Philippines. The increase of MS productionProductions has significantly expanded NNRNiihama Nickel Refinery (NNR)’s plant capacity of electrolytic nickelNickel. In processingProcessing nickel matteNickel matte and MS, there were concerns about the deterioration of the nickel recoveryNickel recovery ratio due to differences in their reactivity in the chlorine leach circuit. In response to this, NNRNiihama Nickel Refinery (NNR) improved productionProductions efficiency through optimizing the leachingLeaching method and implementing equipment modifications, and accomplished an increase in the productionProductions capacity of electrolytic nickelNickel to 65,000 tpa.