Research on new process for separation of silicon wafers and glass from decommissioned photovoltaic module

• Autorzy: Zhang Jian wen , Wang Hai dong , Zhang Sheng guang , Liang Han , Guo Hui , Tao Si-yao

Identyfikatory

DOI

10.37190/ppmp/151679

• Języki publikacji: EN

Abstrakty

EN

In view of the disadvantages of the existing electrostatic separation process of decommissioned photovoltaic modules, which can only achieve the separation of fine silicon wafers and glass and has high energy consumption, a new process to solve the efficient dry separation of coarse silicon wafers and glass in decommissioned photovoltaic modules is proposed- the vibration separation method. Based on the theoretical analysis of the vibration separation of flaky silicon wafer and polyhedral glass particles, the effects of feed size, feed amount, vibration voltage, vibration frequency, horizontal inclination angle and longitudinal inclination angle on the product indexes of wafer and glass separation were investigated by single factor experiment. The optimal experimental conditions were obtained as follows: feed particle size +0.83mm, feed amount 0.15 t/h, vibration voltage 190 V, vibration frequency 48 Hz, horizontal inclination Angle 8°, longitudinal inclination Angle 3°. Under this optimized condition, the content of metal Si in the obtained silicon wafer product is 84.47%, the recovery rate of is 83.73%, the content of impurity SiO₂ is 1.09%, and the content of SiO₂ in the obtained glass product is 65.69%, and the recovery rate is 98.95%, the impurity metal Si content is 0.56%. This study provides a research idea for the industrial separation of silicon wafers and glass from decommissioned photovoltaic modules.

Słowa kluczowe

EN

crystalline silicon photovoltaic modules; decommissioned photovoltaic modules; silicon; solar cell; tempered glass; vibration separation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 6
• Strony: art. no. 151679
• Opis fizyczny: Bibliogr. 19 poz., rys., wykr.

Twórcy

autor

Zhang Jian wen

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
• Changsha Research Institute of Mining and Metallurgy Limited Liability Company, Changsha 410012, China

autor

Wang Hai dong

• School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

autor

Zhang Sheng guang

• Changsha Research Institute of Mining and Metallurgy Limited Liability Company, Changsha 410012, China

autor

Liang Han

• Changsha Research Institute of Mining and Metallurgy Limited Liability Company, Changsha 410012, China

autor

Guo Hui

• School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China

autor

Tao Si-yao

• Changsha Research Institute of Mining and Metallurgy Limited Liability Company, Changsha 410012, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).