Chinese core journals in science and technology
Chemical Abstracts Service (CAS) database
EBSCO Academic Database in the United States
Japan Science and Technology Agency Database (JST)
Jiao Wuji1, Yang Siyuan1,2, Wang Bin2, Li Keyao1, Liu Shuo1, Liu Cheng1
The occurrence characteristics of copper ore, namely "low grade, fine dissemination, and complexcomposition," have made the efficient recovery of associated precious metals an important issue for ensuring the securityof national strategic resource supply. Aiming at the technical bottleneck of low recovery rates of copper and associatedgold and silver, this paper systematically analyzes the process mineralogy characteristics of copper and associated preciousmetals, with emphasis on flotation enrichment, hydrometallurgical extraction, and combined beneficiation-metallurgyprocess routes. The efficiency⁃enhancing mechanisms of the combined process are proposed; through the application ofregrinding technology, novel collectors, and flash flotation equipment, the comprehensive recovery rates of copper, gold,and silver can be significantly improved. The cyanidation and non⁃cyanidation methods for hydrometallurgical extractionare comparatively analyzed, and the importance of developing low⁃toxicity leaching agents and intelligent control strategiesis highlighted.