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日本炼镍厂主要是处理新卡列多尼亚氧化镍矿、西里伯岛的一些氧化镍矿以及加拿大的含镍12％的硫化铜—镍精矿。日本处理氧化镍矿并提取镍所采用的几个工艺流程是: 1.镍锍转炉吹炼所得的镍高锍直接电解或镍高锍焙烧、氧化亚镍还原熔炼、阳极镍电解(可以得到一般的或高纯的电解镍和镍盐); 2.鼓风炉还原熔炼成镍铁再精炼; 3.氧化镍矿回转窑还原熔炼成镍铁,即所谓的粒铁法; 4.氧化镍矿电炉还原熔炼成镍铁(新卡列多尼亚所用的方法)。
Nickel smelters in Japan mainly deal with the new Caledonian nickel oxide ore, some nickel oxide ore on the island of Liberia, and 12% copper sulphide-nickel concentrate containing nickel in Canada. Nippon NiO ore processing and extraction of nickel used in several processes are: 1. Nickel matte converter obtained by blowing nickel high matte direct electrolysis or nickel high matte roasting, nickel oxide reduction smelting, anode nickel electrolysis (you can get the general Or high purity electrolytic nickel and nickel salts); 2. blast furnace reduction smelting into nickel iron and then refined; 3. nickel oxide ore reduction furnace smelting reduction into ferronickel, the so-called grain iron method; 4. Nickel oxide ore furnace reduction Melting into ferronickel (method used by New Caledonia).