Based on the analysis of the chemical separation processes of cobalt from manganese, the new process of reduction leaching primary purification with chemical method impurities elimination completely with P204 cobalt and nickel separation with P507 extraction for cobalt recovery from cobalt manganese material is developed according to the features of the material.

An experimental research on extracting gold and silver from acid leaching cobalt residue;

Improvement of process for cleaning of cobalt residue from zinc hydrometallurgy;

The Cobalt slag is selective leaching with diluents Sulfuric Acid,then we can get Cobalt,Cadmium,Nickel,Zinc from the solution and recover the Copper and Lead from the leached residue.

The optimisically roasting conditions,such as,the ratio of sodium nitrate weight to cobalt slag weight,roasting temperature and time, are 0.

The process conditions for extraction of manganese from electrolytic manganese residue by ultrasonic-assisted leaching with additive were investigated using 8-hydroxyquinoline,potassium xanthate,cetyl trimethyl ammonium bromide,tributyl phosphate and citric acid as leaching additives.

The pore volume and specific surface area of manganese residue were measured by using N2 adsorption method(ASAP2010).

Study on geopolymer prepared by manganese slag;

Physical activation effect is better for manganese slag than for off ash gas.

Grindability experiments for the manganese slag and the off gas ash from ferroman-ganese alloy factory were carried out.