Invention Grant
- Patent Title: Method for producing raw material for ferronickel smelting from low grade nickel oxide ore
- Patent Title (中): 低品位氧化镍矿冶炼镍铁原料生产方法
-
Application No.: US13701951Application Date: 2011-07-13
-
Publication No.: US08747787B2Publication Date: 2014-06-10
- Inventor: Hiroshi Kobayashi , Osamu Nakai , Keisuke Shibayama , Takayuki Nakai , Yoshitomo Ozaki , Norihisa Toki , Junichi Takahashi , Toshirou Tan
- Applicant: Hiroshi Kobayashi , Osamu Nakai , Keisuke Shibayama , Takayuki Nakai , Yoshitomo Ozaki , Norihisa Toki , Junichi Takahashi , Toshirou Tan
- Applicant Address: JP
- Assignee: Sumitomo Metal Mining Co., Ltd.
- Current Assignee: Sumitomo Metal Mining Co., Ltd.
- Current Assignee Address: JP
- Agent Gerald E. Hespos; Michael J. Porco; Matthew T. Hespos
- Priority: JP2010-169845 20100728
- International Application: PCT/JP2011/066016 WO 20110713
- International Announcement: WO2012/014685 WO 20120202
- Main IPC: C22B23/00
- IPC: C22B23/00
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.
Public/Granted literature
- US20130074653A1 METHOD FOR PRODUCING RAW MATERIAL FOR FERRONICKEL SMELTING FROM LOW GRADE NICKEL OXIDE ORE Public/Granted day:2013-03-28
Information query
