Efficient separation of copper and silicon from waste photovoltaic panels

doi:10.3969/j.issn.1000-1565.2020.04.005

Abstract

Abstract: In order to improve the separation efficiency of copper(Cu)and silicon(Si)in waste photovoltaic panels, the optimal efficiency factors for high-voltage electrostatic separation were explored. Using the single factor impact experiment, the separation efficiency of Cu and Si under the four factors of voltage(U), speed(n), electrode spacing(S)and corona electrode angle(θ)were discussed. And Minitab software was used to screen all-factor experimental design and establish the main effect and interaction of the influencing factors on the separation efficiency of Cu and Si. The separation efficiency of Cu was optimized by response optimization. The optimal separation efficiency of Cu was set to U=20 kV, n=65 r/min, S=90 mm, θ=-10°. Under the optimal settings, verification experiments were carried out. The average separation efficiency of Cu reached 97.91%. The optimization results were obtained.

Key words: waste photovoltaic panels, high voltage electrostatic separation, separation efficiency of Cu, all-factor experimental design

CLC Number:

X705

ZHAO Xinmei, ZHANG Zisheng, LAI Weidong, CHEN Xiaoyu, WU Cuigu, DONG Guoyi. Efficient separation of copper and silicon from waste photovoltaic panels[J]. Journal of Hebei University (Natural Science Edition), 2020, 40(4): 365-371.

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