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原料的综合利用对於扩大原料资源有着很重要的意义。有色金属矿石大部分都是复杂的矿石,含有大量各种不同的有用元素。在最重要的金属矿床的简述中已说明了铜矿石含有铜、锌、金、银、钼等;多金属矿石中除锌和铅外,还含有铜、金、银等。此外还应加上一张稀有金属的庞大名单,这些稀有金属在矿石中仅含有十万分之几,然而却有着很重要的工业价值。例如,自硫化铜矿石中除铜外,还可收回许多锌:(一)用优先浮选法自矿石可回收45-70％的锌;(二)用电气收尘器可自烟尘中回收;(三)用综合浮选法自铜锌矿石可收回60％的锌(产物——铜锌精矿——然後再继续用廻转窑法处理)。自含有硫成份的硫化矿石中可回收硫:(一)采用优
The comprehensive utilization of raw materials for the expansion of raw material resources has a very important significance. Most of the non-ferrous ores are complex ores containing a large variety of different useful elements. In the most important description of metal deposits, it has been shown that copper ore contains copper, zinc, gold, silver and molybdenum. In addition to zinc and lead, polymetallic ores also contain copper, gold and silver. In addition, a large list of rare metals should be added. These rare metals contain only a few hundred thousandths of the ore, but they have very important industrial value. For example, copper can be recovered from copper sulfide in addition to copper sulfide: (i) 45-70% zinc is recovered from the ore by preferential flotation; (ii) it can be recovered from the soot using an electric precipitator ; And (3) recovery of 60% of the zinc from the copper-zinc ores using the integrated flotation process (product - copper-zinc concentrates - and then continue with 迴 rotary kiln process). Sulphide ore containing sulfur content can be recovered from sulfur (a) Adopt excellent