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含铁的硫化物和有色金属硫化物混合的复合矿石经磨矿、浮选以及干燥,获得50微米到1毫米的产品。这样的给矿加于回转窑或沸腾焙烧炉中,炉气中具有化学计算量的氧和氯以及0.1～5体积百分数的 FeCl_3蒸气。该
Ferrous sulphide and non-ferrous sulphide mixed mineral ores are ground, flotated and dried to give products in the range of 50 microns to 1 millimeter. Such a feed is applied to a rotary kiln or a roasting furnace having a stoichiometric amount of oxygen and chlorine and 0.1-5 volume percent of FeCl 3 vapor. This