Invention Grant
- Patent Title: Production of metallic nickel with low iron content
- Patent Title (中): 生产含铁量低的金属镍
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Application No.: US12438418Application Date: 2007-08-22
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Publication No.: US07935171B2Publication Date: 2011-05-03
- Inventor: Ivan Ratchev , Houyuan Liu , Alexey Duarte , Harald Theowald Muller
- Applicant: Ivan Ratchev , Houyuan Liu , Alexey Duarte , Harald Theowald Muller
- Applicant Address: AU
- Assignee: BHP Billiton SSM Development Pty Ltd.
- Current Assignee: BHP Billiton SSM Development Pty Ltd.
- Current Assignee Address: AU
- Agency: Brinks Hofer Gilson & Lione
- Agent G. Peter Nichols
- Priority: AU2006904585 20060823
- International Application: PCT/AU2007/001194 WO 20070822
- International Announcement: WO2008/022381 WO 20080228
- Main IPC: C22B3/42
- IPC: C22B3/42 ; C22B23/00

Abstract:
A process for producing a metallic nickel product with a low iron content, that includes: (i) providing an acidic product liquor; (ii) subjecting the acidic product liquor to an ion exchange process to absorb the nickel and part of the iron; (iii) eluting the nickel and iron to produce an eluate containing the nickel and iron. (iv) neutralising the eluate to leave an iron depleted eluate; (v) neutralising the iron depleted eluate to cause precipitation of nickel hydroxide containing low iron; (vi) calcining the nickel hydroxide to convert it to nickel oxide; (vii) subjecting the nickel oxide to direct smelting in the presence of a reductant to produce a molten nickel phase; and (viii) refining the molten nickel phase by oxidation to produce a metallic nickel product with low iron content.
Public/Granted literature
- US20100154593A1 Production of Metallic Nickel with Low Iron Content Public/Granted day:2010-06-24
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