Extracting tin from simulated leaching solution of anode slime with cyclone electrowinning method

摘要

Simulated leaching solution of tin anode slime was prepared as electrolyte to investigate the performance of cyclone electrowinning on extraction of tin from solution in this work. The results showed that Sn(II) could be extracted as sponge tin with cyclone electrowinning. Sn(IV) could be extracted as tin plate. As the concentration of tin chloride solution was lower, the current efficiency was lower and the quality of electrolytic product was poorer. On the condition of Sn(IV) concentration of 50 g/L, operation time of 2h, flow flux of 200 L/h and current density of 400 A/m~2, the current efficiency was more than 90% and the electrolytic product was of high purity which contains 99.5% tin. Cyclone electrowinning was proved to be an effective way to extract Tin from simulated leaching solution.