METHOD FOR SMELTING NICKEL OXIDE ORE

World Intellectual Property Organization Patent

APP PUB NO WO-2016017347-A1
SERIAL NO

PCTJP2015068855

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Abstract

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Provided is a method for smelting nickel oxide ore by which the occurrence of cracking due to heat shock can be suppressed when nickel oxide ore is pelletized and charged into a smelting step (reduction step). A method for smelting nickel oxide ore according to the present invention uses pellets of nickel oxide ore, the method being characterized by comprising a pellet production step S1 for producing pellets from nickel oxide ore, and a reduction step S2 for heating the resulting pellets at a predetermined reduction temperature in a reduction furnace, the reduction step S2 comprising preheating the pellets obtained in the pellet production step S1 to a temperature of 350 to 600°C in the reduction furnace and thereafter charging the pellets into the reduction furnace and raising the temperature of the reduction furnace to the reduction temperature.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO METAL MINING COJPTOKYO

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Inventor(s)

Inventor Name Address
TAKAHASHI JUNICHI 〒3291217 栃木県塩谷郡高根沢町大字太田１１８番地１ テイ・エス テック株式会社内 TOCHIGI ?3291217
INOUE TAKU TOKYO
OKADA SHUUJI TOKYO

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