Abstract:
The occurrence characteristics of copper ore, namely "low grade, fine dissemination, and complex composition," have made the efficient recovery of associated precious metals an important issue for ensuring the security of national strategic resource supply. Aiming at the technical bottleneck of low recovery rates of copper and associated gold and silver, this paper systematically analyzes the process mineralogy characteristics of copper and associated precious metals, with emphasis on flotation enrichment, hydrometallurgical extraction, and combined beneficiation-metallurgy process routes. The efficiency-enhancing mechanisms of the combined process are proposed; through the application of regrinding 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 extraction are comparatively analyzed, and the importance of developing low-toxicity leaching agents and intelligent control strategies is highlighted.