METHOD OF RECOVERING NON FERROUS METALS FROM HOT LEACHED SLUDGE

摘要

After separating brine from the slime and drying the same with solids therein, dried solids are subjected to roasting in an oxydizing temperature of 350 DEG to 400 DEG C, and then leaching the roasted material with predetermined acid and withdrawing sulfur oxides from waste gases generated during the roasting step.