Abstract: The separation between galena, pyrite and sphalerite of Huize lead-zinc ores is optimized using methods of single factor and orthogonal tests.In addition, the kinetic parameters of galena and pyrite are studied based on flotation kinetics principles.The results showed that the flotation processes of galena and pyrite could both be simulated by multi-rate flotation model, which is based on overall balance theory.A correlation coefficient R2 of 0.999 between actual recovery and predicted recovery is achieved for both galena and pyrite.Studies suggests that asynchronous flotation technology makes the best of both flotability and flotation rate for different and identical minerals to achieve an individual and diverse flotation.Studies on new technology of asynchronous flotation can provide some references for mineral processing workers to improve existing technologies and develop new ones.

Key words: Asynchronous flotation, Flotability, Flotation rate, Flotation kinetics, Sulphide ores