Abstract: College of Resource and Civil Engineering，Northeastern University,Shenyang 110819，China In order to calculate the hydrogen bonds between a new-type collector and α-quartz,，a molecular simulation software Materials Studio 8.0 with its forcefield COMPASS Ⅱ were used in this experiment.The results illustrates that:①Use DCZ-2 as a collector，as 4<pH<10，the recovery of quartz for single mineral is over 96%，when pH increased，the recovery of quartz decrease;②The adsorption energy of collector DCZ-2 on the surface of quartz is -505.75 kJ/mol.The average length of hydrogen bonds occurred between DCZ-2 and quartz is 0.177 389 nm according to the simulation，illustrates the collection of DCZ-2 to quartz is strong;③Hydrogen adsorption and electrostatic adsorption both occurred between DCZ-2 and quartz on 4<pH<7.5，and hydrogen adsorption occurred between DCZ-2 and quartz when the pH is increase.

Key words: Ether-amine collector, Hydrogen bond, Adsorption mechanism