Process of Step Separation and Recovery of Valuable Metals from Roasting Cyanidation Tailings
The recovery of valuable metals from roasted cyanidation tailings by step separation is of great significance to the sustainable development of metallurgical industry.In this paper,gold,copper and zinc were extracted from cyanide tailings by first-order acid leaching,secondary reduction roasting-magnetic separation to recover gold-bearing iron concentrate and third-order flotation to recover gold,the comprehensive recoveries of gold,copper,zinc and iron from cyanide roasting tailings were 63.07%,80.5%,70.31%and 80.64%respectively.The technical method can effectively solve the technical problem of comprehensive recovery of gold,copper,zinc and iron from roasting cyanidation tailings,and realize the high-value and resourceful utilization of roasting cyanidation tailings,at the same time,the roasting cyanide waste is converted into secondary high-value resource,which solves the common technical problem in metallurgical industry.
roasting cyanidation tailingsstep separation and recoveryacid leachingreduction roastingmagnetic separation and recovery
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