Process for the recovery of zinc, copper and cadmium in the leaching of zinc calcine

摘要: ABSTRACT OF THE DISCLOSURE Zinc, copper and cadium are recovered from their ferrites by subjecting the to a sulfuric acid bearing solution in presence of potassium, sodium or ammonium ions under atmospehric conditions at 80-105°C precipitate iron present as jarosite, separating least portion jarosite-bearing solid material before recycling neutral leach, which is clacine also fed, feeding obtained leach said ferrite treatment stage classifying into finer coarser fraction, fraction stage, comminuting grinding, leaching milling comminuted process.