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dc.contributor.authorHe, Falinzh_CN
dc.contributor.authorZheng, Songshengzh_CN
dc.contributor.authorChen, Chaozh_CN
dc.contributor.author郑淞生zh_CN
dc.contributor.author陈朝zh_CN
dc.date.accessioned2015-07-22T07:07:50Z
dc.date.available2015-07-22T07:07:50Z
dc.date.issued2012 Octoberzh_CN
dc.identifier.citationMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 2012,43(5):1011-1018zh_CN
dc.identifier.issn1073-5615zh_CN
dc.identifier.other20124815723468zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/90305
dc.description.abstractThe removal of metal impurities from metallurgical grade silicon (MG-Si) by acid leaching has been investigated with the addition of CaO. Prior to adding CaO, Fe is the main impurity in the MG-Si sample, and the 2nd-phase precipitates in silicon are Si-Fe-based alloys, such as Si-Fe, Si-Fe-Ti, Si-Fe-Al, Si-Fe-Mn, and Si-Fe-Ni. The phases of Si-Fe and Si-Fe-Ti are not appreciably soluble in HCl. After the introduction of CaO, Ca becomes the dominant impurity, and the 2nd-phase precipitates become Si-Fe-based alloys, such as Si-Ca, Si-Ca-(Fe, Ti, Ni, Al), and Si-Ca-Fe-Al. These are effectively leached with HCl. Therefore, the HCl leaching effect on the removal of metal impurities has been improved. The optimum content of Ca in the MG-Si samples after adding CaO is in the range of 1 pct to 4 pct, the contents of Fe, Al, Ti, and Ni have been decreased to a minimum of less than 5 ppmw (ppm by weight) each, and the acid leaching results do not show a dependence on Ca content at this range. 漏 The Minerals, Metals & Materials Society and ASM International 2012.zh_CN
dc.language.isoen_USzh_CN
dc.publisherSpringer Bostonzh_CN
dc.source.urihttp://dx.doi.org/10.1007/s11663-012-9681-zzh_CN
dc.subjectAluminumzh_CN
dc.subjectCalciumzh_CN
dc.subjectImpuritieszh_CN
dc.subjectIron alloyszh_CN
dc.subjectLeachingzh_CN
dc.subjectManganesezh_CN
dc.subjectMetallurgyzh_CN
dc.subjectRemovalzh_CN
dc.titleThe effect of calcium oxide addition on the removal of metal impurities from metallurgical-grade silicon by acid leachingzh_CN
dc.typeArticlezh_CN


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