Title:
IRON MANUFACTURING-USE HEMATITE PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2015/001893
Kind Code:
A1
Abstract:
In the present invention, proposed is a separation method for a leaching residue from which can be obtained a hematite-containing substance that can be used as an iron manufacturing-use starting material, and provided is a production method for generating an iron manufacturing-use hematite from the leaching residue. The iron manufacturing-use hematite production method uses as a starting material a leaching residue obtained from a hydrometallurgy plant for nickel oxidation ore that uses a high pressure acid leach method. The iron manufacturing-use hematite production method is characterized by producing hematite cake by sequentially carrying out at least the following three steps: a step for separating the leaching residue into an overflow and an underflow using a wet cyclone, on the condition that the classification size is set so that the overflow is at least a setting of no more than 1μm but no more than a setting of no more than 2μm; a step for physically separating the overflow into magnetically strong matter and weak matter using a strong magnetic field magnetic separation device on the condition that the magnetic field strength is 5-20 [KGauss]; and a dehydration step that uses a superheated steam drying method to adjust the separated magnetically strong matter so that the water content thereof is 10-17%.
Inventors:
OHARA GO (JP)
KAN YASUMASA (JP)
IMAMURA MASAKI (JP)
KAN YASUMASA (JP)
IMAMURA MASAKI (JP)
Application Number:
PCT/JP2014/064695
Publication Date:
January 08, 2015
Filing Date:
June 03, 2014
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B1/00; B01D21/26; B03B5/28; B03B7/00; B03C1/025; C01G49/06; C02F11/12; C21B5/00; C22B3/00; C22B23/00
Foreign References:
| JP2010095788A | 2010-04-30 | |||
| JP2013095971A | 2013-05-20 | |||
| JP2012532994A | 2012-12-20 | |||
| JP2010095788A | 2010-04-30 | |||
| JP2012517523A | 2010-04-29 | |||
| JP2004269960A | 2004-09-30 | |||
| JP2012211363A | 2012-11-01 |
Other References:
See also references of EP 3018222A4
Attorney, Agent or Firm:
OSHIDA Yoshitaka (JP)
Yoshitaka Oshida (JP)
Yoshitaka Oshida (JP)
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