Blar i SINTEF Open på forfatter "Zhu, Mengyi"
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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 ... -
Impurity removal from Si by Si-Ca-Mg ternary alloying-leaching system
Zhu, Mengyi; Wan, Di; Tang, Kai; Safarian, Jafar (Peer reviewed; Journal article, 2020)In this work, Si-Ca-Mg alloys were made with different compositions and solidification conditions to investigate the impurity segregation and separation performance from Si, especially for the crucial P impurity at several ... -
New Insights into Silicon Purification by AlloyingLeaching Refining: A Comparative Study of MgSi, CaSi, and CaMgSi Systems
Zhu, Mengyi; Shengying, Yue; Tang, Kai; Safarian, Jafar (Peer reviewed; Journal article, 2020)In the present work, a comparative study of the silicon alloying–leaching purification process was carried out on the recently developed Mg–Si system, the Ca–Si system, and the novel ternary Ca–Mg–Si system. Insights were ... -
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 ... -
Phosphorus separation from metallurgical-grade silicon by magnesium alloying and acid leaching
Zhu, Mengyi; Azarov, Alexander; Monakhov, Eduard; Tang, Kai; Safarian, Jafar (Peer reviewed; Journal article, 2020)In this paper, the separation of phosphorus from metallurgical-grade silicon was investigated based on an Mg alloying and HCl leaching approach. Experimental results show that P concentration was reduced from initial 15.1 ...