采用硫酸化焙烧—水浸脱铜—碱浸提碲—电积工艺回收铜碲渣中的碲,考察了NaOH浓度、温度等对碲浸出的影响,并对水解脱杂和碲电积工艺进行探索.结果表明,经过硫酸化焙烧、水浸后,铜脱除率为75％;电积产品碲纯度为99.90％,综合碲回收率约93％;金、银、铂和钯等贵金属进一步富集在碱浸渣中.%Tellurium was recovered from Cu-Te slag by sulfating roasting,water leaching to remove copper,alkali leaching to recover tellurium,and electrodeposition to recover copper.Effects of NaOH concentration and temperature on leaching of tellurium were investigated.Hydrolysis deimpurity and tellurium electrodeposition were explored.The results show that copper removal rate is 75％ after sulphation roasting and water leaching.Tellurium grade in electric product is 99.90％ with total recovery of tellurium of about 93％.Valuable metals such as Au,Ag,Pt,and Pd are concentrated in leaching residue.
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