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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.:

US 10364480 B1

PDFFull Text
Date of Patent:
Jul. 30, 2019

Filed:

Sep. 15, 2015

Method for smelting nickel oxide ore

Applicant:

Sumitomo Metal Mining Co., Ltd., Tokyo, JP;

Inventors:

Junichi Takahashi, Tokyo, JP;

Taku Inoue, Tokyo, JP;

Shuuji Okada, Tokyo, JP;

Assignee:

SUMITOMO METAL MINING CO., LTD., Tokyo, JP;

Attorney:

Locke Lord LLP

Primary Examiner:

Tima M McGuthry-Banks

Int. Cl.
CPC ...
C22B 23/02 (2006.01); C22B 23/00 (2006.01); C22B 1/24 (2006.01); C21B 13/10 (2006.01); C22B 5/10 (2006.01); C22C 33/04 (2006.01); C22B 1/245 (2006.01); C22C 1/02 (2006.01); C21B 13/00 (2006.01); C22B 1/14 (2006.01); C22B 1/244 (2006.01);
U.S. Cl.
CPC ...
C22B 23/023 (2013.01); C21B 13/006 (2013.01); C21B 13/0053 (2013.01); C21B 13/10 (2013.01); C22B 1/14 (2013.01); C22B 1/24 (2013.01); C22B 1/244 (2013.01); C22B 1/245 (2013.01); C22B 1/2406 (2013.01); C22B 5/10 (2013.01); C22B 23/005 (2013.01); C22B 23/02 (2013.01); C22C 1/02 (2013.01); C22C 33/04 (2013.01);
Abstract

A smelting method capable of obtaining an iron-nickel alloy having a high nickel grade of 4% or higher by effectively facilitating a reduction reaction of pellets formed using a nickel oxide ore as a raw material. The present invention is a method for smelting a nickel oxide ore, by which an iron-nickel alloy is obtained by forming pellets from a nickel oxide ore and reducing and heating the pellets. In the pellet production step S, a mixture is obtained by mixing raw materials that contain at least a nickel oxide ore and a carbonaceous reducing agent. In the reduction step S, a furnace floor carbonaceous reducing agent is laid on the floor of the smelting furnace in advance when placing the obtained pellets in the smelting furnace and the pellets are placed on the furnace floor carbonaceous reducing agent and then reduced and heated.

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