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1989年11月召开了“1989年世界黄金——黄金工艺和实践讨论会”,该文是由难处理金矿专业会议上的5篇论文总结出来的,发表在《Mining Engineering》1990年2月号,作者L.Whit是出版该讨论会论文集的出版商。作者指出,在80年代一直坚挺的金价使人们对难处理金矿增加了兴趣,因此一些新的加工方法工业化了。自1985年以来,已有4座工厂采用加压氧化法处理难处理金矿,第5座工厂计划在1990年初开工,其它3座工厂将于1992年
The 1989 World Gold - Gold Process and Practice Symposium was held in November 1989 and was summarized by five papers at a difficult-to-process gold mine professional conference in Mining Engineering, February 1990 , L.Whit is the publisher who published the symposium proceedings. The authors note that the strong price of gold in the 1980s has given rise to an interest in refractory gold mines, so some new processing methods have been industrialized. Since 1985, four plants have been using pressurized oxidation to treat refractory gold, the fifth plant is scheduled to start operation in early 1990, the other three plants will be in 1992