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前言云锡二冶500吨还原焙烧氨浸取处理结合氧化铜所采用的工艺流程是,尾矿(设计含铜1.41%,其中结合氧化铜占71.4%)脱水、干燥后,经还原焙烧,使结合氧化铜转化为金属铜和游离氧化铜,然后用氨和碳酸铵溶液经三段逆流浸取,使铜呈铜氨络合物进入溶液,再经四段逆流洗涤使铜氨液与浸取渣分离,将铜氨溶液蒸氨得氧化铜(含碱式碳酸铜)产品,逸出的氨和二氧化碳经冷凝、吸收,返回循环使用.该试验厂1966年开始基建,1970年基本建成,1972年进行负荷试
Preface Processes of 500 ton reduction and roasting ammonia roasting and leaching treatment of copper oxide combined with copper oxide are the tailings (designed to contain copper of 1.41%, accounting for 71.4% of copper oxide), dehydrated and dried, then reduced and roasted to make Combined with copper oxide into metallic copper and free copper oxide, and then ammonia and ammonium carbonate solution by three countercurrent leaching, the copper was copper ammonia complex into the solution, followed by four countercurrent washing copper ammonia solution and leaching Slag separation, the ammonia ammonia solution to copper oxide (including basic copper carbonate) products, the ammonia and carbon dioxide emissions by the condensation, absorption, return to recycling the pilot plant started construction in 1966, basically completed in 1970, 1972 Years of load test