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Title:
METHOD FOR RECOVERING NICKEL FROM RAW MATERIAL CONTAINING NICKEL
Document Type and Number:
WIPO Patent Application WO/2012/081896
Kind Code:
A2
Abstract:
The present invention relates to a method for effectively recovering nickel from a raw material containing nickel, and comprises: a reduction step for reducing the raw material containing nickel at a temperature between 550-950℃, using a reducing gas which contains twice or more moles of hydrogen than the number of moles of the raw material containing nickel (Fe+Ni); a slurrification step for slurrifying the reduced raw material containing nickel; a leaching step for leaching nickel by pouring the slurrified raw material containing nickel and acid into an oxygen-free reactor and dissolving the raw material containing nickel; a solid-liquid separation step for obtaining a solution containing nickel by filtering and eliminating residual sludge, by a solid-liquid separator, from the solution that has been obtained during the leaching step; and an iron elimination step for eliminating iron from the solution containing nickel.

Inventors:
LEE JAE-YOUNG (KR)
JEONG HYUNG-JOON (KR)
KWON OH-JOON (KR)
SOHN JIN-GUN (KR)
KIM KI-HONG (KR)
JUNG MYUNG-CHAE (KR)
KIM YONG-LAE (KR)
KANG SIN-MYOUNG (KR)
LEE JONG-SEOP (KR)
Application Number:
PCT/KR2011/009601
Publication Date:
June 21, 2012
Filing Date:
December 13, 2011
Export Citation:
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Assignee:
RES INST IND SCIENCE & TECH (KR)
LEE JAE-YOUNG (KR)
JEONG HYUNG-JOON (KR)
KWON OH-JOON (KR)
SOHN JIN-GUN (KR)
KIM KI-HONG (KR)
JUNG MYUNG-CHAE (KR)
KIM YONG-LAE (KR)
KANG SIN-MYOUNG (KR)
LEE JONG-SEOP (KR)
International Classes:
C22B23/00; C22B3/10
Foreign References:
KR100988462B12010-10-20
KR20090049078A2009-05-15
US7416711B22008-08-26
KR20070041770A2007-04-19
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
특허법인 씨엔에스 (KR)
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Claims: