New Comprehensive Recovery Technology for Gold-containing Waste Residue of Gold Beneficiation and Metallurgy Terminal Process
Focusing on gold-containing waste residue produced in the terminal process of gold beneficiation and metallurgy such as high carbon mud,carbon powder,waste slag and wastewater treatment pond mud etc,the technology of roasting-acid leaching-cyanidation was studied,the optimized condition was obtained and the technology accordance to industrial technology of fluidized roasting-acid leaching-cyanidation was researched.The results show that these two processes can match perfectly.By controlling right ratio of gold-containing waste residue to gold concentrate and matching corresponding dicyclic atomization feeding technology and calcination atmosphere,the recovery rate of Au and Cu is 94.37% and 85.07% respectively,which realizes high efficiency,energy saving and environmental production.