摘要
于5%硫酸介质中用过硫酸铵将铬矿石中的铬(Ⅲ)氧化为铬(Ⅵ),在氨性溶液中,铝以氢氧化物沉淀的形式与铬分离,用EDTA容量法分析三氧化二铝的含量,消除了大量铬对分析三氧化二铝的影响。方法简单,准确,快速。
Cr（Ⅲ） was oxided into Cr（Ⅵ） by Ammonium Per Sulfate in 5% H2SO4 Solution. Alumina was sparated from chromium as form of hydroxide. Alumina analysed by using EDTA volumetric method, and the influence of a large number of chromium was eliminated in analyzing. The method is simple, accurate and fast.
出处
《有色矿冶》
2007年第1期53-54,共2页
Non-Ferrous Mining and Metallurgy
关键词
铬矿石
三氧化二铝
容量法
chromium ores
alumina
volumetric method
