少量的铅含量在贵金属的氰化提金工艺中是有益的，但铅含量过高在金精矿的焙烧—氰化提金过程中是有害的。
The few lead content is beneficial in the precious metal cyaniding, but the high lead content in the gold concentrate roasting-cyaniding is harmful.
综述了我国部分黄金矿山对氰化尾矿中有用金属的综合回收工艺研究、生产实践及指标。
The technology, production practice and techno economic indexes of the synthetic recovery of valued metals from cyanide tailing are introduced.
主要供备件金属零件淬火、氰化、退火和回火等热处理用，尤其适用于紧固件、标准件热处理。
Mainly for spare parts heat treatments and so on metal parts quenching, cyaniding, annealing and tempering USES, especially is suitable for the fastener, the standard letter heat treatment.
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