METHOD FOR PRODUCING HEMATITE FOR IRON MANUFACTURING

Title:

METHOD FOR PRODUCING HEMATITE FOR IRON MANUFACTURING

Document Type and Number:

WIPO Patent Application WO/2014/175094

Kind Code:

A1

Abstract:

Proposed is a method for separating a leaching residue from which can be obtained a hematite-containing material that can be used as a starting material for iron manufacturing, and provided is a production method that, from the leaching residue, generates hematite for iron manufacturing. The method for producing hematite for iron manufacturing and using as the starting material a leaching residue obtained from a hydrometallurgy plant of nickel oxide ore using a high-pressure acid leaching method is characterized by sequentially performing at least the two steps that are a step for separating the leaching residue into an underflow and an overflow using a wet cyclone and a step for separating the separated overflow using magnetic force into that which is strongly magnetic and that which is weakly magnetic, the step for separating using magnetic force using a high magnetic field magnetic separation device.

More Like This:

JP2760956	EXTRACTION AND SEPARATION OF NICKEL AND/OR COBALT
JPS52105524	SEPARATION OF COBALT
WO/2001/044519	A BACTERIALLY ASSISTED HEAP LEACH

Inventors:

OHARA GO (JP)
SASAKI HIDEKI (JP)
KAN YASUMASA (JP)
IMAMURA MASAKI (JP)

Application Number:

PCT/JP2014/060612

Publication Date:

October 30, 2014

Filing Date:

April 14, 2014

Export Citation:

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Assignee:

SUMITOMO METAL MINING CO (JP)

International Classes:

C22B23/00; B03C1/30; B04C9/00; C01G49/06; C22B3/04

Domestic Patent References:

WO2007099714A1

2007-09-07

Foreign References:

JP2010095788A	2010-04-30
JPS62254851A	1987-11-06
JP2010095788A	2010-04-30
JP2012517523A	2012-08-02
JP2004269960A	2004-09-30
JP2012211363A	2012-11-01

Other References: