The feasibility and technology on dephosphorization from phosphorous iron ores by bio-leaching were investigated.

Gold recovery from the refractory arsenic sulphide concentrate was studied by column bio-leaching.

f, and the bio-leaching results of the low grade chalcopyrite were re ported in this paper.

Bioleaching of Covellite By Using Pure and Mixed Culture of Acidithiobacillus ferrooxidans and Acidithiobacillus caldus;

Test Study of Bioleaching Iron Minerals from Bauxite Flotation Tailings;

Research on bioleaching of low-grade copper ore;

A new technigue for copper electrolysis of Au-Cu ore with chlorination leaching electrolyte in a diaphragm cell;

A new Au-Ag recovery process,"additives roasting-chlorination leaching-reduction by sodium sulfite" for the complex gold flotation concentrate is described in this article.

In the chlorination leaching solution of Shizhuyuan complex bismuth concentrate bearing beryllium and fluorine,there were more than forty species which were coordinated with metal ions,such as Bi 3+ ,Be 2+ ,Fe 3+ ,and ligands such as Cl -,F - and SO 2- 4,respectively.

Process development for the gold concentrate roasting-cyanide leaching in China;

The feasibility study of extracting gold by liquid membrane techuique from the pulp of cyanide leaching;

Discussion on the cause of low silver leaching rate taken place in gold and silver cyanide leaching and ways to increase it;

Experimental study on cyanidation for recovering gold and silver from a bearing-copper gold concentrate is conducted.