在锌精馏生产过程中,镉塔冷凝器产出的半成品高镉锌,是一种除含锌和镉以外,几乎不含其它杂质的锌镉二元合金,含镉品位约5～10％。这种合金目前在金属材料工业中还没有实际使用价值。为了处理这种高镉锌,我厂于1977年10月修建了一座工业性的高镉锌精馏塔进行生产试验。该设计是采 In the zinc rectification and production process, the semi-finished high-cadmium zinc produced by the cadmium-tower condenser is a zinc-cadmium binary alloy containing almost no other impurities besides zinc and cadmium. The cadmium-containing grade is about 5 to 10% . This alloy is currently no practical value in the metal materials industry. In order to deal with this kind of high-cadmium zinc, our factory built an industrial high-cadmium zinc rectification tower in October 1977 for production test. The design is adopted