Title:
METHOD FOR MANUFACTURING IRON-MAKING HEMATITE
Document Type and Number:
Japanese Patent JP2015134696
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method for generating iron-making hematite from leach residue by proposing a separation method of leach residue allowing for obtainment of a hematite-containing matter usable as an iron-making raw material.SOLUTION: A method for manufacturing iron-making hematite includes using as the raw material leach residue in a slurry state, obtained from a wet refining plant of nickel oxide ore, using a high pressure acid leaching method. In more details, the method for manufacturing iron-making hematite performs sequentially at least: a first step of separating the leach residue in a slurry state into overflow and underflow, using a wet cyclone; a second step of separating the overflow into a component with strong magnetism and a component with weak magnetism, using a strong magnetic field magnetism separation apparatus using a magnetic force; and a third step of sintering the separated component with strong magnetism at 1,150-1,350°C to form a sintered body.
Inventors:
OBARA TAKESHI
SUGA YASUMASA
IMAMURA MASAKI
SUGA YASUMASA
IMAMURA MASAKI
Application Number:
JP2014006871A
Publication Date:
July 27, 2015
Filing Date:
January 17, 2014
Export Citation:
Assignee:
SUMITOMO METAL MINING CO
International Classes:
B01D35/06; C01G49/06; B03B5/28; B03B7/00; C22B23/00
Domestic Patent References:
| JP2010095788A | 2010-04-30 | |||
| JP2013151715A | 2013-08-08 | |||
| JP2011214147A | 2011-10-27 | |||
| JP2001234255A | 2001-08-28 |
Attorney, Agent or Firm:
Yoshitaka Oshida