SEPARATION PROCESS OF PRECIOUS METAL

摘要

Separation process of precious metal was briefly discussed; basic idea for separation process, basic idea for dissolution process, separation with solvent extraction and separation with solvent impregnated resin were explained in this manuscript. If it is possible to collect separately each precious metal, the separation and recovery are easily operated. However, the process for separation and purification becomes complicated, when precious metals are contained simultaneously in the solids like electronic wastes and anode slime. Solvent extraction and solvent impregnated resin processes are considered to be effective for the aqueous solutions containing precious metal ions at the concentration as high as 0.5 g/dm~3 and the concentration lower than several hundred ppms, respectively.