关键词: 废胶渣, 铜单质, 铜合金, 切割粉碎, 静电分选, 效益分析

Abstract: A certain waste smear factory in Qingyuan City contains copper elemental and alloys of copper，iron，lead，zinc，antimony and tin，these metals are most tiny and granular or linear wrapped in plastics and rubber.In order to fully recovered these metals，copper recovery index comparison by using gravity separation，flotation，eddy current separation and electrostatic separation were conducted based on the comparison of the effect of ball mill，vibrations mill and cutting crusher for smashing smear and peeling metals.The results show that:cutting crusher is better at smashing and peeling；electrostatic separation is easier to obtain a good separation performance；copper concentrate with copper grade of 52.72%，the total metallic element content nearly 90%，the recovery of copper is 78.31% and the content of carbon and sulfur is relatively lower can be obtained by two roughing and one cleaning electrostatic separation process.The cutting crushing-screening-electrostatic separation is an efficient recovery process for valuable metal in waste smear，which not only has good economic benefits，but also has significant social benefits.

Key words: Waste smear, Copper elemental, Copper alloy, Cutting comminution, Electrostatic separation, Benefit analysis