| The comprehensive recovery of silver-indium alloy scrap is of great significance. In the present study, electrolysis was used to recover silver from the silver-indium alloy scrap. Effects of the current density, initial silver concentration in the electrolyte and pH value on electrolysis efficiency were investigated, and the changes of indium content in the solution and in the yielded silver powder with the electrolysis time were also explored. In addition, the recovery of residual silver in the electrolytic waste liquid was studied. The optimal conditions for the electrolysis process were established including an initial Ag+concentration of 100 g/L, an electrolyte pH of 1, an initial temperature of 25 ℃, a current density of 350 A/m2, an electrolysis cycle of 6 days. Under these conditions, a silver recovery rate of greater than 99% was achieved and the product of silver powder meets the requirements of IC-Ag 99.99. |
