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http://dx.doi.org/10.7844/kirr.2013.22.3.28

Sintering Characteristics of Si/SiC Mixtures from Si Waste of Solar Cell Industry  

Kwon, Woo Teck (Energy-Environmental Ceramics Division, KICET)
Kim, Soo Ryong (Energy-Environmental Ceramics Division, KICET)
Kim, Younghee (Energy-Environmental Ceramics Division, KICET)
Lee, Yoon Joo (Energy-Environmental Ceramics Division, KICET)
Kim, Jong Il (Energy-Environmental Ceramics Division, KICET)
Lee, Hyun Jae (Enbion Inc.)
Oh, Sea Cheon (Department of Environmental Engineering, Kongju National University)
Publication Information
Resources Recycling / v.22, no.3, 2013 , pp. 28-35 More about this Journal
Abstract
The recycling of the Si/SiC mixture sludge obtained from solar cell industry is very significant, environmentally and economically. The sintering characteristics of Si/SiC mixture sludge was studied for the purpose of recycling. In this study, to understand sintering behavior, SiC content in the Si/SiC mixture was controlled using an air separator. Various Si/SiC mixtures having different SiC contents were sintered using carbon black, clay and aluminum hydroxide as sintering aids. Physical properties of Si/SiC mixture and sintered bodies have been characterized using SEM, XRD, particle size analyzer and apparent density measurement. SEM and particle size analysis result confirmed that the fine particles less than 1 ${\mu}m$ decreased or removed more effectively through the air separator in the case of 95% SiC sample compared than the case of 75% SiC sample or original SiC sample. Further, with addition of the Aluminum Hydroxide, ${\beta}$-cristobalite phase gradually decreased while mullite phase gradually increased. The addition of the carbon black improved the sintering characteristics.
Keywords
photovoltaic; silicon; silicon carbide; recycling; sintering;
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Times Cited By KSCI : 1  (Citation Analysis)
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