Removal of cobalt from zinc sulphate solution using rude antimony trioxide as additive
(School of Materials and Metallurgy,
Northeastern University, Shenyang 110004, China)
Northeastern University, Shenyang 110004, China)
Abstract: The process of cobalt removal from zinc sulphate solution using rude antimony trioxide as an additive was investigated. The rude antimony trioxide was produced in treatment of copper and lead anode mud and its main components are antimony trioxide, antimony arsenate and lead antimonate. Using the rude antimony trioxide as the additive of cobalt removal can not only decrease operation cost of purification but also find out a new way for utilization of the rude antimony trioxide. The effects of temperature, dosage of zinc dust, the rude antimony trioxide, copper ion and solution pH on removal of cobalt were studied. And experimental data using the rude Sb2O3 as additive were compared with those using Sb2O3. The results indicate that using rude Sb2O3 as additive, cobalt concentration in solution could be decreased from 24mg/L to below 1mg/L under about the same conditions as using Sb2O3.
Key words: zinc sulphate solution; rude antimony trioxide; cobalt removal