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Chemical Cracking Effect of Aqua Regia on the Purification of Metallurgical-Grade Silicon
Zhang, Hu1,2; Wang, Zhi1; Ma, Wenhui2; Xie, Keqiang2; Hu, Lei1
2013-06-05
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume52Issue:22Pages:7289-7296
AbstractThe chemical cracking effect on metallurgical-grade silicon (MG-Si) during leaching by aqua regia was investigated. The results showed that the granularity of the particles was reduce by acid leaching, and the phenomenon was more noticeable with the increase in the silicon particle size. The cracking was essentially ascribed to the dissolution of the major impurities that depended on the composition and distribution of the impurity phases in MG-Si. In addition, the removal efficiency of the main metallic impurities with the occurrence of the chemical cracking effect during the leaching process was studied. The remarkable efficiency was obtained from the coarse particle size,where 7.9% Fe, 77% Al, 45% Ca, and 63% were removed. The reason could be attributed to the strong oxidation of aqua regia that promoted the dissolution Of the Si Al-Fe soluble phase, which resulted in the enhanced removal effect of acid on the impurities.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS KeywordFE-SI ALLOYS ; HYDROMETALLURGICAL PURIFICATION ; THERMODYNAMICS ; KINETICS ; REMOVAL ; BORON
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000320152900024
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13731
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.Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650000, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Hu,Wang, Zhi,Ma, Wenhui,et al. Chemical Cracking Effect of Aqua Regia on the Purification of Metallurgical-Grade Silicon[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2013,52(22):7289-7296.
APA Zhang, Hu,Wang, Zhi,Ma, Wenhui,Xie, Keqiang,&Hu, Lei.(2013).Chemical Cracking Effect of Aqua Regia on the Purification of Metallurgical-Grade Silicon.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,52(22),7289-7296.
MLA Zhang, Hu,et al."Chemical Cracking Effect of Aqua Regia on the Purification of Metallurgical-Grade Silicon".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 52.22(2013):7289-7296.
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