Title:
METHOD FOR MANUFACTURING HEMATITE FOR IRONMAKING
Document Type and Number:
WIPO Patent Application WO/2015/107985
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a manufacturing method for producing hematite for ironmaking from leachate, the method suggesting a separation method for leachate from which hematite-containing matter that can be used as a raw material in ironmaking can be obtained. This method for manufacturing hematite for ironmaking involves the use of, as a raw material, leachate in a slurry state obtained from a hydrometallurgy plant for extracting nickel oxide ore using high-pressure acid leaching, and is characterized in that at least steps 1-3 are performed in sequence, the steps comprising: a first step in which the leachate in a slurry state is separated into overflow and underflow using a wet cyclone; a second step in which the overflow is separated into strongly magnetic constituents and weakly magnetic constituents using a high-field magnetic separation device that uses a magnetic force; and a third step in which a sintered compact is formed by sintering the separated strongly magnetic constituents at a temperature in the range of 1150-1350°C.
Inventors:
OHARA GO (JP)
KAN YASUMASA (JP)
IMAMURA MASAKI (JP)
KAN YASUMASA (JP)
IMAMURA MASAKI (JP)
Application Number:
PCT/JP2015/050461
Publication Date:
July 23, 2015
Filing Date:
January 09, 2015
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B3/04; B01D35/06; B03B7/00; B03C1/00; C01G49/06; C22B23/00
Domestic Patent References:
| WO2014175094A1 | 2014-10-30 | |||
| WO2015001893A1 | 2015-01-08 |
Foreign References:
| JP2010095788A | 2010-04-30 | |||
| JP2013151715A | 2013-08-08 | |||
| JP2011214147A | 2011-10-27 | |||
| JP2001234255A | 2001-08-28 | |||
| JP2010095788A | 2010-04-30 |
Other References:
See also references of EP 3112482A4
Attorney, Agent or Firm:
OSHIDA Yoshitaka (JP)
Yoshitaka Oshida (JP)
Yoshitaka Oshida (JP)
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