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Purification of metallurgical-grade silicon by Sn-Si refining system with calcium addition
Hu, Lei1,2; Wang, Zhi1; Gong, Xuzhong1; Guo, Zhancheng1,3; Zhang, Hu1
2013-10-30
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
Volume118Issue:0Pages:699-703
AbstractPurification of metallurgical-grade silicon (MG-Si) by a combination of solvent refining and super gravity separation and acid leaching has been studied. MG-Si was alloyed with tin, and based on this system, the removal of main impurities in MG-Si by solvent refining was investigated. Furthermore, phosphorus removal by calcium addition in molten Si and Sn-Si melt was also studied. Inductively Coupled Plasma (ICP) chemical analysis revealed main impurities including B and P could be efficiently removed by the Sn-Si process and acid leaching. The content of P further reduced when Ca was added to the Sn-Si refining system. Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS) analysis showed that the formation of compounds between P and several elements in the grain boundaries during the solvent refining process was an important routine of P removal. The maximum weight percent of P in P-containing impurity phases reached to 17.8% in the refined Si after the Sn-Si refining process with Ca addition. (C) 2013 Elsevier B.V. All rights reserved.
KeywordPurification Metallurgical-grade Silicon Solvent Refining Si-sn System Calcium Addition
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS KeywordIMPURITY GETTER ; DIRECTIONAL SOLIDIFICATION ; REMOVAL ; MELT
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000326994500084
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13548
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Hu, Lei,Wang, Zhi,Gong, Xuzhong,et al. Purification of metallurgical-grade silicon by Sn-Si refining system with calcium addition[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2013,118(0):699-703.
APA Hu, Lei,Wang, Zhi,Gong, Xuzhong,Guo, Zhancheng,&Zhang, Hu.(2013).Purification of metallurgical-grade silicon by Sn-Si refining system with calcium addition.SEPARATION AND PURIFICATION TECHNOLOGY,118(0),699-703.
MLA Hu, Lei,et al."Purification of metallurgical-grade silicon by Sn-Si refining system with calcium addition".SEPARATION AND PURIFICATION TECHNOLOGY 118.0(2013):699-703.
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