Research on Separation and Extraction of Valuable Metals from Complex Non-ferrous Metals Resources by High Pressure Oxygen Leaching Methodology: A Review

To systematically discuss how to realize the high efficiency utilization of the complex non-ferrous metals resources with the high pressure oxygen leaching method, the present article reviews the current research progress of the technology performed in the separation and extraction of valuable metals from low-grade polymetallic complex ores, unmanageable intermediate products, byproducts and solid wastes. By expanding the research frontiers in this field, the reaction mechanism and remarkable achievements of the technology in the separation and extraction of valuable metals from different types of complex non-ferrous materials are analyzed and discussed, and the research trend of the technology is prospected. The results showed that the research fields of the high pressure oxygen leaching method in the complex nonferrous metal resources mainly include four major aspects: the enrichment and pretreatment of low-grade polymetallic complex minerals, the efficient and selective separation and extraction of valuable components and the directional control the mineral phase of leaching residue obtained, and the comprehensive recovery of unmanageable intermediate products and byproducts, as well as the recycling and harmless clean utilization of solid waste. It is inevitably concluded that the high pressure oxygen leaching method can not only realize the efficient and selective extraction of valuable components in complex non-ferrous metal resources and configurate directionally the harmfulness phase structure of leaching residue obtained, but also achieve breakthrough in the domains of comprehensive resource recovery from solid wastes. Graphical Abstract