最近进行的高镁质氧化铜镍矿石鼓风炉熔炼的工业试验,所处理的矿石具有下列化学成分(%):Ni2.0～2.5;Cu1.0～1.8;Fe16.50～19.8;S0.5～0.8;SiO_228.5～30.0;MgO20.0～21.5;CaO1.0～2.80;Al_2O_3～4.0。此种氧化铜镍矿处于硫化矿体的次生氧化带,地表上风化严重,矿石质地疏松。经过采矿、粗碎、运输等工序,有60～70%的矿石碎成25毫米以下的粉 In the recent industrial trial of blast furnace smelting of magnesia-rich cupric oxide ore, the ore treated had the following chemical composition (%): Ni 2.0-2.5; Cu 1.0-0.8; Fe 16.50-19.8; 0.8; SiO_228.5 ~ 30.0; MgO20.0 ~ 21.5; CaO1.0 ~ 2.80; Al_2O_3 ~ 4.0. The copper oxide nickel ore is in the secondary oxidation zone of sulphide ore bodies, the weathering is serious on the surface and the ore is loose in texture. After mining, crushing, transportation and other processes, there are 60 to 70% of the ore crushed into 25 mm below the powder