CAJ | 학술논문

针对铜冶炼过程中产出的硫化砷渣的处理工艺进行了评述，并对新研究开发的酸性加压氧化浸出工艺进行了详细介绍。硫化砷渣经酸性加压氧化浸出后，铜、砷及铼的浸出率均达到95%以上，硫则以单质形态进入浸出渣中。浸出液经二氧化硫还原冷却脱砷进而可生产优质As2O3，脱砷后液经溶剂萃取提取铼用于生产高铼酸铵，萃余液再经蒸发结晶可以生产硫酸铜。由此，硫化砷渣中的铜、砷、铼、硫都得到综合回收。
침대동야련과정중산출적류화신사적처리공예진행료평술，병대신연구개발적산성가압양화침출공예진행료상세개소。류화신사경산성가압양화침출후，동、신급래적침출솔균체도95%이상，류칙이단질형태진입침출사중。침출액경이양화류환원냉각탈신진이가생산우질As2O3，탈신후액경용제췌취제취래용우생산고래산안，췌여액재경증발결정가이생산류산동。유차，류화신사중적동、신、래、류도득도종합회수。
The treatment processes of arsenic sulphide slag produced in copper smelting are reviewed and a new developed technique of acidic oxidization pressure leaching is further introduced in this paper. After the pressure leaching, the extraction of copper, arsenic and rhenium can be all achieved as more than 95 % from the sulphide slag, of which sulphidic sulfur is oxidized into elemental sulfur and kept in the leaching residue. The leaching solution can be treated by sulfur dioxide reduction and further cooling to produce high-quality As2O3. Ammonium perrhenate can be produced through solvent extraction from the arsenic-removed solution and afterwards copper sulfate can be produced by evaporation crystallization from the raffinate. Thus , the valuables of copper, rhenium, sulfur as well as arsenic are all recovered comprehensively.