Title:
製鉄用ヘマタイトの製造方法
Document Type and Number:
Japanese Patent JP5776913
Kind Code:
B2
Abstract:
Proposed is a process for separating a leach residue from which a hematite-containing material that can be used as a raw material for ironmaking can be obtained, and provided is a production process of hematite for ironmaking from the leach residue. The process for producing hematite for ironmaking using, as a raw material, the leach residue in a slurry state obtained from a hydrometallurgical plant for nickel oxide ore utilizing a high pressure acid leach process comprises in sequence: a first step of separating the leach residue in a slurry state into an overflow and an underflow using a wet cyclone; a second step of separating the overflow into a strong magnetic component and a weak magnetic component using a strong-magnetic-field magnetic separator utilizing magnetic force; and a third step of sintering the separated strong magnetic component at a temperature of 1150 to 1350°C to form a sintered body.
Inventors:
Go Ohara
Yasumasa Suga
Masaki Imamura
Yasumasa Suga
Masaki Imamura
Application Number:
JP2014006871A
Publication Date:
September 09, 2015
Filing Date:
January 17, 2014
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C01G49/06; B01D35/06; B03B5/28; B03B7/00; C22B23/00
Domestic Patent References:
| JP201095788A | ||||
| JP2013151715A | ||||
| JP2011214147A | ||||
| JP2001234255A |
Attorney, Agent or Firm:
Yoshitaka Oshida
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