The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2015
Filed:
Apr. 06, 2012
Hiroyuki Mitsui, Tokyo, JP;
Osamu Nakai, Tokyo, JP;
Hirotaka Kawasaki, Tokyo, JP;
Hiroshi Kobayashi, Ehime, JP;
Tatsuya Higaki, Ehime, JP;
Atsushi Idegami, Ehime, JP;
Hiroyuki Mitsui, Tokyo, JP;
Osamu Nakai, Tokyo, JP;
Hirotaka Kawasaki, Tokyo, JP;
Hiroshi Kobayashi, Ehime, JP;
Tatsuya Higaki, Ehime, JP;
Atsushi Idegami, Ehime, JP;
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
Abstract
A method for recovering chromite from ore slurry obtained by processing nickel oxide ore, the raw material, in a plant for the wet smelting of nickel oxide ore. In the method chromite is separated and recovered from an ore slurry obtained from a nickel oxide ore when nickel and cobalt are recovered from the nickel oxide ore. The method has a grain diameter separation step for separating the ore slurry on the basis of a predetermined classification point according to the difference in the grain diameter of particles contained in the supplied ore slurry and a sedimentation separation step for causing the oversized ore slurry separated in the grain diameter separation step to undergo sedimentation and concentration on the basis of a target classification point, and recovering the chromite. The coarse particle content of the oversized ore slurry separated in the grain diameter separation step is adjusted to 30-50%.