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世界上的粗铜,大部分是由硫化铜浮选精矿经反射炉(或其他炉)熔炼,再将冰铜用转炉吹炼而产出的。转炉渣含铜较高,需返回熔炼炉处理。这往往带来了操作上的困难,减少了熔炼的生产能力,增加了渣中铜及金、银的损失,也不利于铁的综合回收。同时,转炉渣中含有的铜多呈人工硫化物,其浮选特征和硫化铜矿石基本相似。因此炼铜渣的选矿问题,早已引起了人们的注意。
The world’s blister copper, most of the copper sulfide flotation concentrate by the reflex furnace (or other furnace) smelting, and then the matte converter with converter output. Converter slag copper is high, need to return to the melting furnace. This often leads to operational difficulties, reducing the production capacity of smelting, increasing the loss of copper and gold, silver, is not conducive to the comprehensive recovery of iron. At the same time, copper contained in the converter slag is mostly artificial sulfide, and its flotation characteristics are basically similar to copper sulfide ores. Therefore, copper smelting beneficiation, has aroused people’s attention.