Abstract: In order to improve the dispersion performance of mineral processing agents，aiming at the problem that oily agents are difficult to dissolve in flotation，a mineral processing plant in Dexing is taken as an example. By studying the dispersion and agglomeration behavior of oily agents in aqueous sol⁃ vents，an on-line rapid and efficient dispersion technology suitable for industrial production is explored. The dispersion performance of oily agents in aqueous solvents is studied from three aspects of temperature， pH and dispersion strength.The results show that the temperature and pH can not make the oily agent and water-based solvent fully mixed. Ultrasonic cavitation technology and liquid multiple shift recombination technology can mix the oily agent and water into a white“oil-in-water”emulsion in a short time. Through Fourier transform infrared analysis，it is found that ultrasonic cavitation technology and liquid phase multi⁃ ple displacement recombination technology will not change the chemical properties of the agent and will not change the effect of the agent. According to the analysis results of laser particle size analyzer，ultrason⁃ ic cavitation technology and liquid phase multiple displacement recombination technology can quickly dis⁃ perse oily agents into micron-sized droplets in water.The open-closed-circuit simulation test shows that af⁃ ter emulsification and dispersion of collector Mac-12，its collecting ability and foaming ability are en⁃ hanced，the amount of collector is redued to a certain extent，The rapid and efficient dispersion technology of reagent has low cost，high benefit，convenient transformation and wide application range，which has high application value.

Key words: oily agents, ultrasonic cavitation technology, liquid phase multiple shift recombination technology