title: [Study on recovery of copper from waste printed wiring boards by electrostatic separation].
abstract: Recovery of Cu from waste printed wiring boards (PWBs) was studied by crushers and electrostatic separator. The results of pulverizing experiment show that liberation degree of metal is higher in grain size -0.9 + 0.074 mm, the product of this grain size can be used as raw material in electrostatic separation. The main factors that influence electrostatic separation are found by dynamic analysis of particles in course of electrostatic separation, it conclude electrode voltage, roller rotate speed, electric coronary polar distance and granularity of particles. The -0.9 + 0.074 mm pulverizing product is separated through single stage electrostatic separation after optimizing influence factors. Result shows that the enrichment condition of Cu in fine material is good, Cu could be concentrated from 32.0% to 63.6%, and recovery ratio is 78.7%.
authors.affiliation: School of Environment, Beijing Normal University, Beijing 100875, China. jwma@bnu.edu.cn
authors.forename: Jun-wei
authors.initials: JW
authors.lastname: Ma
authors.forename: Zhen-zhen
authors.initials: ZZ
authors.lastname: Wang
authors.forename: Jin-hui
authors.initials: JH
authors.lastname: Li
mesh_terms: D003300:Copper / Q000737:chemistry* / Q000302:isolation & purification; D004581:Electronics; D008962:Models, Theoretical; D011327:Printing; D055672:Static Electricity; D018505:Waste Management / Q000379:methods*; D014866:Waste Products
chemical_list: D014866:Waste Products; D003300:Copper