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dan zhi gui de hua xue fen xi
Author(s): 
Pages: 79-80
Year: Issue:  1
Journal: Refractories

Abstract: 目前,市场上出售的硅粉,其Si含量(w)有95%与97%两种.在硅粉的生产配料中C是稍过量的,正品硅粉中很少有SiO2,因此,采用氢氟酸挥散法测得挥发掉的部分就可认为是单质Si.若硅粉中混杂了SiO2,用氢氟酸挥散法则无法将二者区分,导致硅含量的测定结果偏高.GB/T14849<工业硅化学分析方法>只能测定Ca、Fe、Al量,也解决不了SiO2存在的影响.在此,将笔者分析硅的方法加以整理,以供参考.……
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