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Title:
METHOD FOR ENRICHMENT-RECOVERING FERRONICKEL FROM RAW MATERIAL CONTAINING NICKEL, METHOD FOR RECOVERING NICKEL FROM ENRICHED FERRONICKEL, AND METHOD FOR RECYCLING SOLUTION CONTAINING IRON PRODUCED FROM SAME
Document Type and Number:
WIPO Patent Application WO/2012/081897
Kind Code:
A2
Abstract:
The present invention relates to a method for enriching ferronickel to a high density from a raw material containing nickel and iron, and more particularly comprising: a step of slurrifying for reducing the raw material containing nickel-iron and then slurrifying same by adding water; a step of acid treating for simultaneously inducing ferronickel separation and iron leaching reactions by injecting into the slurry of the reduced raw material containing nickel-iron, which is obtained from the step of slurrifying, hydrochloric acid having 0.5-1.5 times more moles or sulfuric acid having 0.25-0.75 times more moles than the moles in the reduced raw material containing nickel-iron; a step of filter-separating for eliminating a solution containing iron from the solution which is obtained from the step of acid treating by separating solids containing ferronickel by means of a filter; and a step of enriching for slurrifying the solids containing ferronickel from the step of filter-separating and mixing same with the raw material containing nickel-iron that is reduced, and enriching ferronickel by performing the step of acid treating and the step of filter-separating. Furthermore, the present invention provides a method for recycling a solution containing iron, which is produced and wasted in a method for recovering highly pure nickel from the nickel enriched product and in a method for recovering the nickel enriched product.

Inventors:
LEE JAE-YOUNG (KR)
JEONG HYUNG-JOON (KR)
KWON OH-JOON (KR)
SOHN JIN-GUN (KR)
BYEON TAE-BONG (KR)
KIM KI-HONG (KR)
KWON WOO-TAECK (KR)
YOO BYEONG-OG (KR)
KIM JONG-HO (KR)
LEE HYUNG-NAM (KR)
Application Number:
PCT/KR2011/009602
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)
BYEON TAE-BONG (KR)
KIM KI-HONG (KR)
KWON WOO-TAECK (KR)
YOO BYEONG-OG (KR)
KIM JONG-HO (KR)
LEE HYUNG-NAM (KR)
International Classes:
C22B23/00; C22B3/06
Foreign References:
JP2004284848A2004-10-14
KR100988462B12010-10-20
JP2001253719A2001-09-18
KR100406367B12003-12-18
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
특허법인 씨엔에스 (KR)
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Claims: