Title:
METHOD FOR SMELTING NICKEL OXIDE ORE
Document Type and Number:
WIPO Patent Application WO/2016/103812
Kind Code:
A1
Abstract:
Provided is a smelting method capable of effectively promoting a reduction reaction on pellets formed using nickel oxide ore as starting material to obtain a ferronickel alloy with a high nickel grade of at least 4%. The present invention is a method for smelting nickel oxide ore wherein ferronickel alloy with a nickel grade of at least 4% is obtained by reduction-heating of pellets formed from nickel oxide ore, the method comprising a pellet-producing step S1 for producing pellets from nickel oxide ore, and a reducing step S2 for reduction-heating of the obtained pellets in a smelting furnace. In the pellet-producing step S1, the pellets are produced by mixing nickel oxide ore with a specified amount of a carbonaceous reducing agent as starting materials. In the reducing step S2, the produced pellets are charged in a smelting furnace in which a carbonaceous reducing agent (furnace bottom carbonaceous reducing agent) has been spread over the entire furnace bottom and reduction-heating is performed.
Inventors:
TAKAHASHI JUNICHI (JP)
INOUE TAKU (JP)
OKADA SHUUJI (JP)
INOUE TAKU (JP)
OKADA SHUUJI (JP)
Application Number:
PCT/JP2015/076198
Publication Date:
June 30, 2016
Filing Date:
September 15, 2015
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C22B23/02; C21B13/10; C22B1/24; C22B5/10; C22C33/04
Domestic Patent References:
| WO2014080831A1 | 2014-05-30 |
Foreign References:
| JP2004156140A | 2004-06-03 | |||
| JP2011256414A | 2011-12-22 | |||
| JP2003239008A | 2003-08-27 | |||
| JP2001181720A | 2001-07-03 | |||
| JPH0625770A | 1994-02-01 |
Other References:
See also references of EP 3222737A4
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
Right wood Masayuki (JP)
Right wood Masayuki (JP)
Download PDF: