Boron and Phosphorus Removal in Si Purification with Ca-Si Alloy under Air Atmosphere

H. R. Cheng, S. S. Zheng, C. Chen

2018

Abstract

To further discuss the reduction of phosphorus (P) in the purification of metallurgical grade silicon (MG-Si), MG-Si alloyed with Ca-Si alloy first and then acid leaching was employed to removal CaSi2 phase in which P was enriched under air atmosphere at 1723 K in this paper. The higher removal fraction of P can be obtained by adding more Ca-Si alloy to Si. The P removal fraction is 95.45% when the mass ratio of Si to Ca-Si alloy is 0.5. However, B cannot be removed from Si by alloying with Ca-Si alloy due to the concentration of B in the Si phase is higher than that in CaSi2 phase.

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Paper Citation


in Harvard Style

Cheng H., Zheng S. and Chen C. (2018). Boron and Phosphorus Removal in Si Purification with Ca-Si Alloy under Air Atmosphere.In Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE, ISBN 978-989-758-346-9, pages 127-132. DOI: 10.5220/0007435501270132


in Bibtex Style

@conference{iwmce18,
author={H. R. Cheng and S. S. Zheng and C. Chen},
title={Boron and Phosphorus Removal in Si Purification with Ca-Si Alloy under Air Atmosphere},
booktitle={Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE,},
year={2018},
pages={127-132},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007435501270132},
isbn={978-989-758-346-9},
}


in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Materials, Chemistry and Engineering - Volume 1: IWMCE,
TI - Boron and Phosphorus Removal in Si Purification with Ca-Si Alloy under Air Atmosphere
SN - 978-989-758-346-9
AU - Cheng H.
AU - Zheng S.
AU - Chen C.
PY - 2018
SP - 127
EP - 132
DO - 10.5220/0007435501270132