前言过去几年间,由于黄金价格不断上涨,促使世界的采金工业得到迅速发展,出现了许多选冶新工艺和新设备,并使金银的回收技术也得到了很大的改进。我们于1984年10月去美国内华达州的卡林(Carlin)、格彻尔(Getchell)、贝尔(Bell)、朗德山(RoundMountain)、“雨天”(Rain)、波瑞阿哩斯(Borealis)、戈德费尔德(Goldfield)等七个金矿山和卡林、贝尔、朗德山、波瑞阿里斯等四个金矿选矿厂进行了考察, Preface In the past few years, due to the continuous rise of gold prices, the gold mining industry in the world has been rapidly developed. There have been many new processes and new equipment for smelting and metallurgy, and the gold and silver recovery technologies have also been greatly improved. We traveled to Carlin, Getchell, Bell, RoundMountain, Rain, Borealis, Nevada in October 1984, ), Goldfield and other gold mines and four gold mines, including Carlin, Bell, Longde Mountain and Borealis,