湿法锑白的晶型转变^①

来源期刊：中国有色金属学报1996年第1期

论文作者：段学臣 赵天从

文章页码：36 - 39

关键词：湿法锑白； 晶型转变； 白度； 光敏性

Key words：whiteness； sensitivity； vacuum heat treatment ； antimony oxide

摘    要：研究了湿法锑白的白度和光敏性。通过真空干燥试验研究，对样品进次了X射线衍射定量分析，首次发现真空干燥可以使湿法锑白发生晶型转变，由斜方晶体转变为立方晶体。在适宜条件下，其转变率可达99.6%。转变为立方晶的锑白白度高且见光稳定，光敏性消失。

Abstract: The degree of whiteness and the sensitivity to light of Sb₂O₃ prepared by hydrometallurgy method have been studied. Through vacuum heat treatment experiments and X-ray diffraction quantitative measurement,it was first discovered that the crystal form of Sb₂O₃ prepared by hydrometallurgy method can be turned from pris-matic form into cubic ones (about 99. 6%)under suitable conditions by heat treatment in vacuum. The cubic Sb₂O₃ acquired has high whiteness and is stable to light，i. e. its photo-sensitivity disappeared.