SETTLING SEPARATION METHOD FOR NUETRALIZED SLURRY AND WET SMELTING METHOD FOR NICKEL OXIDE ORE

World Intellectual Property Organization Patent

APP PUB NO WO-2014080665-A1
SERIAL NO

PCTJP2013070476

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Abstract

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One of the purposes of the present invention is to provide a settling separation method for a neutralized slurry, said settling separation method being capable of: efficiently neutralizing a leachate obtained by leaching nickel and cobalt from a nickel oxide ore; and effectively separating and removing, while minimizing filtration failure, a neutralization sediment formed by the sedimentation of impurities. The other of the purposes thereof is to provide a wet smelting method for a nickel oxide ore, said wet smelting method employing the settling separation method. This settling separation method comprises: subjecting a leachate obtained by leaching nickel and cobalt from a nickel oxide ore to neutralization with magnesium oxide; adding a cationic flocculant to the obtained neutralized slurry; and separating and removing a neutralization sediment thus formed.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO METAL MINING COJPTOKYO

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Inventor(s)

Inventor Name Address
OZAKI YOSHITOMO NIIHAMA-SHI EHIME 792-0002
SHOJI HIROFUMI NIIHAMA
HIGAKI TATSUYA NIIHAMA
ENOMOTO MANABU 〒1058716 東京都港区新橋５丁目１１番３号 住友金属鉱山株式会社内 TOKYO ?1058716

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