由于金、银的价格提高和从矿石中浸出与置换沉淀贵金属的工艺有了很大的改进,因此过去一度认为没有经济价值的许多金、银矿床现在都正在开采。用活性炭吸附和解吸贵金属氰化物的方法取得了重大进展,从而导致世界各地炭浆厂的发展以及在堆浸和槽浸作业、排泄液流及尾矿回水中增加炭柱的使用量。下面扼要介绍贵金属浸出和置换沉淀工艺某些比较重要的发展,其中涉及到用于金、银 Many gold and silver deposits, once thought to be of no economic value, are now being mined due to the significant improvements in the price of gold and silver and the leaching and replacement of precious metals from the ore. Significant advances have been made in the adsorption and desorption of precious metal cyanides with activated carbon, leading to the development of the pulp mills around the world and the increased use of charcoal in heap leachate and tank dredging operations, excretion streams and tailings backwaters. The following is a brief summary of some of the more important developments in noble metal leaching and displacement processes, which involve the use of gold, silver