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.

Based on various zincation solutions,a novel chemical zincation technique was put forward through applying inhibitor,refining agent,activator,accelerating agent,potential-conditioning agent,stabilizer,surfactant,and non-cyanide composite complexing agent,which has appropriate batch formula,simple maintaining and controlling conditions.

The leaching performance of the low grade molybdenite from Jinduicheng Mine is investigated by both bioleaching and chemical oxidation leaching process.