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1.发明公开Recovery of zinc from zinc-bearing sulphidic ores and concentrates by controlled oxidation roasting 失效通过控制氧化反应从锌载体硫化物和浓缩物中回收锌
公开(公告)号：EP0195650A3
公开(公告)日：1987-04-08
申请号：EP86301973
申请日：1986-03-18
发明人： Robinson, Murry , Kirk, Donald , Jue, Bruce
CPC分类号： C22B15/0015 , B03B9/00 , C22B1/02 , C22B19/02 , C22B19/22 , C22B19/24 , Y02P10/234
摘要： In a process for recovering zinc from zinc sulphide concentrates, the concentrate is roasted in an oxygen, deficient atmosphere so as to retard ferrite formation in the temperature range of 600°C to 1000°C. In one embodiment the calcine produced is subjected to physical separation processes, the unreacted zinc sulphides are then dead roasted separately, and the separated iron containing fraction is treated for further zinc recovery. In another embodiment the unreacted sulphides in the calcine are separated by physical and or chemical means and returned to the partial roasting step; and the separated oxidic fraction either as solids or in a solution, are treated for zinc recovery, and iron disposal. Undesirable sulphides are bled off from the processing circuit as required.
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公开(公告)号：EP0162954A3
公开(公告)日：1988-03-16
申请号：EP84114333
申请日：1984-11-27
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