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The demandDemand for nickelNickel and cobaltCobalt is consistently increasing with a rapid advancement of lithiumLithium-ion batteriesBattery (LIBsLithium Ion Batteries (LIB)) for clean technologiesTechnology and energy storage. NiVolt has developed a sustainable patent pending hydrometallurgical technologyTechnology through batch and continuous pilot plant operations to extract and convert the nickelNickel and cobaltCobalt contained in sulphide concentrates of the Dumont NickelNickel Project into mixed hydroxide precipitate (MHP)Mixed Hydroxide Precipitate (MHP) for lithiumLithium-ion battery materialsBattery materials supplySupply chain in North AmericaNorth America. The process can extract up to 99% nickelNickel and cobaltCobalt under the optimal pressure oxidationPressure Oxidation (POX) conditions with a minimum amount of iron contained in the pregnant leach solution (PLS). The leach slurry undergoes pH adjustment to remove impurities, including aluminum and iron. The purified PLS is used to produce MHPMixed Hydroxide Precipitate (MHP). This process produces a relatively clean, high-grade MHP, which can be used as a feed for producing precursor cathode active materialsPrecursor Cathode Active Material (PCAM) (pCAM) of LIBsLithium Ion Batteries (LIB). This paper will describe the potential unit operations with process chemistry and batch test results.

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Hydrometallurgical Pressure Oxidation of Nickel Sulphide Concentrates to Produce Mixed Hydroxide Precipitate for Battery Precursors

  • 会议论文

  • 发表日期：

    2025年

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  • M. A. Halim,
  • C. Kosinski,
  • G. Smith,
  • J. Muinonen,
  • K. Bradley,
  • J. Brown

摘要

The demandDemand for nickelNickel and cobaltCobalt is consistently increasing with a rapid advancement of lithiumLithium-ion batteriesBattery (LIBsLithium Ion Batteries (LIB)) for clean technologiesTechnology and energy storage. NiVolt has developed a sustainable patent pending hydrometallurgical technologyTechnology through batch and continuous pilot plant operations to extract and convert the nickelNickel and cobaltCobalt contained in sulphide concentrates of the Dumont NickelNickel Project into mixed hydroxide precipitate (MHP)Mixed Hydroxide Precipitate (MHP) for lithiumLithium-ion battery materialsBattery materials supplySupply chain in North AmericaNorth America. The process can extract up to 99% nickelNickel and cobaltCobalt under the optimal pressure oxidationPressure Oxidation (POX) conditions with a minimum amount of iron contained in the pregnant leach solution (PLS). The leach slurry undergoes pH adjustment to remove impurities, including aluminum and iron. The purified PLS is used to produce MHPMixed Hydroxide Precipitate (MHP). This process produces a relatively clean, high-grade MHP, which can be used as a feed for producing precursor cathode active materialsPrecursor Cathode Active Material (PCAM) (pCAM) of LIBsLithium Ion Batteries (LIB). This paper will describe the potential unit operations with process chemistry and batch test results.