Boron removal from metallurgical grade silicon using a FeCl2 molten salt refining technique
The slag refining for boron removal from metallurgical grade silicon is a promising metallurgical process for producing solar grade silicon. In this paper, FeCl2 molten salt has been used as a new refining agent to remove boron from MG-Si. The effects of refining time and mass ratio of MG-S...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2013-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2013/1450-53391300019J.pdf |
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| author | Jia B.J. Wu J.J. Ma W.H. Yang B. Liu D.C. Dai Y.N. |
| author_facet | Jia B.J. Wu J.J. Ma W.H. Yang B. Liu D.C. Dai Y.N. |
| author_sort | Jia B.J. |
| collection | DOAJ |
| description | The slag refining for boron removal from metallurgical grade silicon is a
promising metallurgical process for producing solar grade silicon. In this
paper, FeCl2 molten salt has been used as a new refining agent to remove
boron from MG-Si. The effects of refining time and mass ratio of MG-Si to
FeCl2 molten salt on boron removal have been investigated in detail. The
results showed that boron can be efficiently removed in form of BCl3 and
boron concentration in MG-Si was successfully reduced from 22×10-6 to 4×10-6
at 1823K for 2 h with the mass ratio of FeCl2 molten salt to MG-Si for 1.0.
The rate equation of boron removal using FeCl2 molten salt was proposed and
established in kinetic, which showed a large difference in removal limitation
of boron compared with thermodynamics. |
| format | Article |
| id | doaj-art-b5724e71f8304d829c53d1091a5fd449 |
| institution | Kabale University |
| issn | 1450-5339 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-b5724e71f8304d829c53d1091a5fd4492025-02-02T08:29:48ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392013-01-0149325726110.2298/JMMB120823019J1450-53391300019JBoron removal from metallurgical grade silicon using a FeCl2 molten salt refining techniqueJia B.J.0Wu J.J.1Ma W.H.2Yang B.3Liu D.C.4Dai Y.N.5Kunming University of Science and Technology, The national Engineering Laboratory for vacuum metallurgy, Kunming, China + Kunming University of Science and Technology, Engineering Research Center for Silicon Metallurgy and Silicon Materials of Yunnan ProvKunming University of Science and Technology, The national Engineering Laboratory for vacuum metallurgy, Kunming, China + Kunming University of Science and Technology, Engineering Research Center for Silicon Metallurgy and Silicon Materials of Yunnan ProvKunming University of Science and Technology, The national Engineering Laboratory for vacuum metallurgy, Kunming, China + Kunming University of Science and Technology, Engineering Research Center for Silicon Metallurgy and Silicon Materials of Yunnan ProvKunming University of Science and Technology, The national Engineering Laboratory for vacuum metallurgy, Kunming, ChinaKunming University of Science and Technology, The national Engineering Laboratory for vacuum metallurgy, Kunming, ChinaKunming University of Science and Technology, The national Engineering Laboratory for vacuum metallurgy, Kunming, China + Kunming University of Science and Technology, Engineering Research Center for Silicon Metallurgy and Silicon Materials of Yunnan ProvThe slag refining for boron removal from metallurgical grade silicon is a promising metallurgical process for producing solar grade silicon. In this paper, FeCl2 molten salt has been used as a new refining agent to remove boron from MG-Si. The effects of refining time and mass ratio of MG-Si to FeCl2 molten salt on boron removal have been investigated in detail. The results showed that boron can be efficiently removed in form of BCl3 and boron concentration in MG-Si was successfully reduced from 22×10-6 to 4×10-6 at 1823K for 2 h with the mass ratio of FeCl2 molten salt to MG-Si for 1.0. The rate equation of boron removal using FeCl2 molten salt was proposed and established in kinetic, which showed a large difference in removal limitation of boron compared with thermodynamics.http://www.doiserbia.nb.rs/img/doi/1450-5339/2013/1450-53391300019J.pdfMetallurgical grade siliconBoron removalMolten saltKinetics |
| spellingShingle | Jia B.J. Wu J.J. Ma W.H. Yang B. Liu D.C. Dai Y.N. Boron removal from metallurgical grade silicon using a FeCl2 molten salt refining technique Journal of Mining and Metallurgy. Section B: Metallurgy Metallurgical grade silicon Boron removal Molten salt Kinetics |
| title | Boron removal from metallurgical grade silicon using a FeCl2 molten salt refining technique |
| title_full | Boron removal from metallurgical grade silicon using a FeCl2 molten salt refining technique |
| title_fullStr | Boron removal from metallurgical grade silicon using a FeCl2 molten salt refining technique |
| title_full_unstemmed | Boron removal from metallurgical grade silicon using a FeCl2 molten salt refining technique |
| title_short | Boron removal from metallurgical grade silicon using a FeCl2 molten salt refining technique |
| title_sort | boron removal from metallurgical grade silicon using a fecl2 molten salt refining technique |
| topic | Metallurgical grade silicon Boron removal Molten salt Kinetics |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2013/1450-53391300019J.pdf |
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