Browsing NTNU Open by Author "Wu, Guixuan"
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Combined silicon refining for boron removal and Si-Kerf recycling using K2O-CaO-SiO2 slags
Zhu, Mengyi; Wu, Guixuan; Tang, Kai; Müller, Michael; Safarian, Jafar (Peer reviewed; Journal article, 2024) -
Combined silicon refining for boron removal and Si-Kerf recycling using K2O-CaO-SiO2 slags
Zhu, Mengyi; Wu, Guixuan; Tang, Kai; Müller, Michael; Safarian, Jafar (Peer reviewed; Journal article, 2024)It is crucial for the photovoltaic (PV) industry to establish a circular materials flow for more sustainable solar silicon production. In the present work, a series of K2O-SiO2 and K2O-CaO-SiO2 slags were examined for the ... -
Effects of La2O3 Addition into CaO-SiO2 Slag: Structural Evolution and Impurity Separation from Si-Sn Alloy
Zhu, Mengyi; Wu, Guixuan; Azarov, Alexander; Monakhov, Eduard; Tang, Kai; Müller, Michael; Safarian, Jafar (Peer reviewed; Journal article, 2021)Boron (B) and phosphorus (P) are the most problematic impurities to be removed in the production of solar-grade silicon by the metallurgical process. In this work, the distribution of B and P between CaO-(La2O3)-SiO2 slags ... -
P removal from Si by Si-Ca-Al alloying-leaching refining: Effect of Al and the CaAl2Si2 phase
Zhu, Mengyi; Yue, Shengying; Wu, Guixuan; Tang, Kai; Xu, Yijiang; Safarian, Jafar (Peer reviewed; Journal article, 2021)Phosphorus (P) is a critical impurity in metallurgical-grade Si that needed to be removed for solar-grade Si production. The Si-Ca-Al-P system is one of the most crucial alloy systems for Si refining, where P can be separated ...