CAJ | 학술논문

针对铜渣的物相组成，研究了加压酸浸有价金属，考察了铜渣粒度、搅拌速度、温度、时间、氧气体积分数、浸出剂硫酸质量浓度、液固体积质量比对有价金属浸出率的影响。通过试验，确定了最佳工艺参数：浸出温度80℃，液固体积质量比4．5∶1，浸出剂硫酸质量浓度105 g/L ，m（铜）∶ m（酸）＝1∶1．74，氧气体积分数≥30％，氧气压力0．2 M Pa ，浸出时间4 h ，搅拌速度500 r/min。最佳条件下，有价金属浸出率分别为：铜≥92％，镉≥99％，锌≥46％，锗≥70％，铟≥70％；铅100％、银≥97％留在浸出渣中。
침대동사적물상조성，연구료가압산침유개금속，고찰료동사립도、교반속도、온도、시간、양기체적분수、침출제류산질량농도、액고체적질량비대유개금속침출솔적영향。통과시험，학정료최가공예삼수：침출온도80℃，액고체적질량비4．5∶1，침출제류산질량농도105 g/L ，m（동）∶ m（산）＝1∶1．74，양기체적분수≥30％，양기압력0．2 M Pa ，침출시간4 h ，교반속도500 r/min。최가조건하，유개금속침출솔분별위：동≥92％，력≥99％，자≥46％，타≥70％，인≥70％；연100％、은≥97％류재침출사중。
Based on the constitutes of copper slag ,pressure leaching of copper and else valuable metals from the copper slag using sulfuric acid was researched .The effects of copper slag granularity ,stirring speed ,leaching temperature ,leaching time ,oxygen concentration ,sulfuric acid concentration ,the ratio between liquid and solid on leaching rate of copper and else valuable metals were examined .The optimum process parameters were determined .The results show that under the conditions of leaching temperature of 80 ℃ ,the ratio between liquid and solid of 4 .5∶1 ,sulfuric acid concentration of 105 g/L ,the mass ratio between copper and acid of 1∶1 .74 ,oxygen concentration≥30% ,oxygen pressure of 0 .2 M Pa ,leaching time of 4 h ,stirring speed of 500 r/min ,the leaching rate of valuable metals are that :Cu≥92% ,Cd≥99% ,Zn≥46% ,Ge≥70% ,In≥70% ,Pb and Ag retain in the leaching residues .