PROCESS FOR SMELTING NICKEL OXIDE ORE

Japanese Patent JP2017036472

A

PROBLEM TO BE SOLVED: To provide a process for smelting nickel oxide ore by forming pellets from nickel oxide ore and reduction-heating the pellets in a smelting furnace to produce an iron-nickel alloy, and in which, by effectively proceeding the smelting reaction in a reduction step, the fusion of the pellets can be prevented as well as an iron-nickel alloy having a high nickel grade can be produced.SOLUTION: The process for smelting nickel oxide ore according to the present invention includes a pellet producing step S1 for producing pellets from nickel oxide ore and a reduction step S2 for reduction-heating the obtained pellets in a smelting furnace, and in which: in the pellet producing step S1, at least a raw material containing nickel oxide ore and a carbonaceous reducing agent is mixed to form a mixture, and the mixture is agglomerated to form pellets; and in the reduction step S2, the pellet obtained in the pellet producing step S1 is placed on the hearth floor of a smelting furnace having a metallic hearth floor and is subjected to a reduction heat treatment at a temperature of 1,000°C or more and 1,300°C or less.SELECTED DRAWING: Figure 4

TAKAHASHI JUNICHI
OKADA SHUJI
AIDA SACHIHIRO

JP2015157992A

February 16, 2017

August 10, 2015

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SUMITOMO METAL MINING CO

C22B23/02; C22B1/16; C22B1/245; C22B5/10

JP2012017526A	2012-01-26
JP2002249813A	2002-09-06
JP2007507608A	2007-03-29
JPS4639588B1
JPS4866514A	1973-09-12
JP2002029857A	2002-01-29
JPS5355673A	1978-05-20
JP2010229525A	2010-10-14
JP2004156140A	2004-06-03

CN102212636A

2011-10-12

Masayuki Masabayashi
Hayashi Ichiyoshi

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