According to lab and pilot test results and the situation of capital construction progress,the development thinking,full dump leaching and half dump leaching to treat oxidized ore,flotation to treat sulphide ore,developing oxidized ore and sulphide ore together early,and strengthening test study of Yulong Copper Mine were expounded.

Industrial experience has shown that increasing recycling water in flotation typically impacts negatively the recovery and selectivity, especially in the selective flotation of minerals from complex sulphide ores.

A mathematic model for oxidation leaching of sulphide ore was developed.

NONFERROUS METAL SMELTING PROCESS WITHOUT SO_2 FORMATION——Reduction matte making smelting of nonferrous metal sulfide ores and sulfur bearing materials;

Spontaneous combustion of sulfide ores is caused by the coupling of multi-factors and multi-fields and it is a typical nonlinear problem.

Also the roles of Fe 2+ and of Fe 3+ reaction with water in the leaching of sulfide ores were investigated.

Effect of sulfide minerals on acidithiobacillus ferrooxidans oxidation activity of Fe~(2+);

The electrogenerative simultaneously leaching process of sulfide minerals and manganese dioxide is investigated by introduction of the principle of electrical power generation.

The dual cell technique was preliminarily used to study the influence of some metal ions(Ag~+,Ce~(4+),La~(3+) and Cu~(2+)) and radiation on the electro generative leaching of sulfide minerals electrode.

Anodic oxidation of sulfide minerals by alternating current impedance technique;

The various effects of microbe on sulfide minerals leaching process is summarized, and the relative investigations are reviewed.

The bioleaching of sulfide minerals is now an established industral technology for pretreating refrectory gold concentrates and for extraction of copper.

Experimental study on heavy metal release of sulfide mine tailings;