Patents Assigned to SIMITOMO METAL MINING CO., LTD.
  • Publication number: 20130074653
    Abstract: Provided is a method for producing ferronickel from a nickel sulfide or a mixed sulfide containing nickel and cobalt, obtained by hydrometallurgy of nickel oxide ore or obtained from scraps or products in process. The method for producing a ferronickel raw material is to form the ferronickel raw material from a nickel sulfide or a mixed sulfide containing nickel sulfide and cobalt sulfide, wherein treatments are performed through the following steps: (1) redissolution step, (2) deferrization step, (3) solvent extraction step, (4) hydroxylation step, (5) roasting step, and (6) washing and calcining step.
    Type: Application
    Filed: July 13, 2011
    Publication date: March 28, 2013
    Applicant: SIMITOMO METAL MINING CO., LTD.
    Inventors: Hiroshi Kobayashi, Osamu Nakai, Keisuke Shibayama, Takayuki Nakai, Yoshitomo Ozaki, Norihisa Toki, Junichi Takahashi, Toshirou Tan