Reclaiming Tellurium from Alkaline Residue of Gold and Silver Production

Water leaching-neutralizing processes have been introduced to prepare TeO2from alkaline residue of gold and silver production,and the fineness of recovered TeO2is more than 99. 5%. Moreover,alkali dissolution and electrolysis have been introduced to prepare tellurium,and the fineness of recovered tellurium ingot is more than 99. 995%. This is a method with high quality propery of the product,uncomplicated equipment,simple flowsheet, green environmental protection,and its economic benefits are also obvious.