Abstract: A study on the principles of amine collector LKD-1(a mixture of different amines with soluble ingredients) by being given to quartz and talc,and on the essence of the reagent by Zeta potential meter and infrared spectrometer.Results showed that LKD-1 made zeta potential of quartz and talc rised,and electrostatic adsorption is found on the surface of them.Consideration of no displacement of each peak position infrared spectrum diagram,the adsorption is not chemical adsorption.Whereas a N-H stretching vibration absorption peak was found after the process of interaction of talc and tegent,consequently,there are both physical adsorption and chemical adsorption about the effect of talc and reagent.