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. 18, 2019
Filed:
Jun. 30, 2015
Applicant:
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 23/02 (2006.01); C22B 23/00 (2006.01); C22B 1/24 (2006.01); C22B 5/10 (2006.01); C22B 1/245 (2006.01); C22C 33/04 (2006.01);
U.S. Cl.
CPC ...
C22B 23/02 (2013.01); C22B 1/2406 (2013.01); C22B 1/2413 (2013.01); C22B 23/005 (2013.01); C22B 1/245 (2013.01); C22B 5/10 (2013.01); C22C 33/04 (2013.01);
Abstract
Provided is a method for producing a pellet capable of suppressing heat shock-induced crack occurrence, when nickel oxide ores are made into pellets and placed in a reducing furnace in a smelting process. In the method for producing a pellet from a nickel oxide ore, a nickel oxide ore, a binder and a carbonaceous reducing agent are mixed, the mixture is made into a lump, and then the resulting lump is subjected to a preheat treatment at a temperature of 350° C. to 600° C. In this preheat treatment, the lump more preferably undergoes the preheat treatment at a temperature of 400° C. to 550° C.