Abstract: Various collectors，regulators and froths that were widely used in potassium salts flotation at home and abroad were introduced，in order to make potassium salts technology workers better understand the current situation and development trend of potassium salts flotation.The research and application status of collectors，such as C18 alkyl primary amine and sodium dodecyl sulfate，used for potassium salts flotation were emphasized.And flotation reagents of coarse potassium salts at home and aboard were introduced prominently，such as the mixture of abietate and C₈～C₁₈ carbamate aliphatic acid，mixture of hydrogenated abieticalcohol-kerosene and aliphatic amine，and mixture of aliphatic amine and alkoxy-propylalcohol.It was pointed out that research and development direction about potassium flotation regents in the future would include the diversification and multi-functionalization of alkyl chain structure in a collector molecule，and several regents combination etc.It is emphasized that the research on flotation regents of coarse potassium salts plays a significant rule in development of potassium flotation industry in future.

Key words: Potassium salts, Flotation, Collector, Octadecylamine, Potassium chloride