Title:
METHOD FOR PREPARING NICKEL OXIDE ORE SLURRY
Document Type and Number:
WIPO Patent Application WO/2022/118743
Kind Code:
A1
Abstract:
Provided is a method for preparing a nickel oxide ore slurry with which it is possible to wet-sift a nickel oxide ore to efficiently separate an ore slurry collected on the minus-sieve side by sedimentation. The present invention is a method for preparing a nickel oxide ore slurry to be used as a raw material for wet-smelting of nickel by high-pressure oxygen leaching, the method including: a step in which a nickel oxide ore is wet-sifted, the nickel oxide ore being blended so that the grade of nickel or the grade of an element other than nickel is a prescribed grade; and a step in which a flocculant is added to a minus-sieve nickel oxide ore slurry that is obtained to concentrate the slurry by sedimentation separation. The sedimentation separation is performed after the slurry concentration of the minus-sieve nickel oxide ore slurry is adjusted preferably to at least 3-6% by mass.
Inventors:
OZAKI YOSHITOMO (JP)
Application Number:
PCT/JP2021/043307
Publication Date:
June 09, 2022
Filing Date:
November 26, 2021
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B23/00; C22B3/08; C22B3/22; C22B3/44
Foreign References:
| JP2020033602A | 2020-03-05 | |||
| JP2019044208A | 2019-03-22 | |||
| JP2008189999A | 2008-08-21 | |||
| JPH11124640A | 1999-05-11 | |||
| JPS5223504A | 1977-02-22 |
Attorney, Agent or Firm:
TSUJIKAWA Michinori (JP)
Download PDF: