复杂硫化铜矿热活化-加压浸出工艺  

Heat activation pretreatment and pressure leaching of complex copper sulfide ores

作　　者：徐志峰[1] 李强[2] 王成彦[2] 

机构地区：[1]江西理工大学材料与化学工程学院,赣州341000 [2]北京矿冶研究总院冶金研究设计所,北京100044

出　　处：《中国有色金属学报》2010年第12期2412-2418,共7页The Chinese Journal of Nonferrous Metals

基　　金：国家重点基础研究发展计划资助项目(2007CB613505);江西省自然科学基金资助项目(2007GQC0656)

摘　　要：针对以黝铜矿为主体矿物的复杂硫化铜矿开展热活化-加压浸出工艺研究。结果表明:复杂铜精矿经573K温度热活化1～2h后,在浸出温度453K,氧分压0.6MPa,初始硫酸浓度1.23mol/L,液固比5:1,木质素磺酸钙用量为精矿质量的1.25%等条件下,浸出仅2h就可使铜和锌浸出率分别高达94.08%和96.95%,而铁浸出率仅为22.37%;在复杂铜精矿热活化预处理过程中,未见铅、锌、硫和砷等元素挥发损失,并探讨了复杂铜精矿的热活化机理。The heat activation-pressure leaching of complex copper sulfide ores with tetrahedrite as the main mineral was studied. The results show that the leaching rates of copper and zinc are as high as 94.08% and 96.95%,respectively,while that of iron is limited at 22.37% in the following conditions：the heat activation temperature 573 K,the heat activation time 1-2 h,the leaching temperature 453 K,the oxygen partial pressure 0.6 MPa,the initial sulfuric acid concentration 1.23 mol/L,the liquid to solid ratio 5：1,the calcium lignosulphonate dosage of 1.25% of the mass of the ores,the leaching time 2 h. No loss of lead,zinc,sulfur and arsenic in the ores occurs during the heat activation pretreatment. The heat activation mechanism of complex copper sulfide ores is further discussed.

关 键 词：硫化铜矿 黝铜矿 热活化 预处理 加压浸出 

分 类 号：TF111[冶金工程—冶金物理化学]