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控制砷的污染将很快成为加拿大和美国的环保条例的主要目标。运用新技术将使熔炼某些硫化矿时所产生的有毒化合物——三氧化二砷的回收过程彻底改善。加拿大砷的回收得到了很大的发展。目前,三个大型金冶炼厂都设有砷的回收系统,为处理特殊矿石的焙烧烟气,各设计了一个系统。从60年代初以来,季安耶洛夸夫矿山公司
Controlling arsenic contamination will soon become a major goal of environmental regulations in Canada and the United States. The use of new technologies will completely improve the recovery of arsenic trioxide, a toxic compound produced during the smelting of certain sulphide ores. The recovery of arsenic in Canada has been greatly developed. At present, all three large gold smelters have arsenic recovery system, each designed a system for the treatment of roasted fumes from special ores. Since the early 1960s, Ji’an Yaluoqiu mine company