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.

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