酸溶法测石灰石中氧化钙、氧化镁含量的分析

Analysis of calcium oxide and magnesium oxide content in limestone by acid dissolution method

水泥生产中需要大量快速测量石灰石中氧化钙、氧化镁的含量。与氢氧化钠熔样-EDTA滴定法(代用法)相比,酸溶EDTA滴定法简单准确,且极大缩短了测定时间,并满足生产中的检测要求。简述了酸溶EDTA滴定法的操作方法、误差来源及注意事项。

Quick measurement of calcium oxide and magnesium oxide content in limestone is needed in cement production.Acid-soluble EDTA titration is simple and accurate compared to sodium hydroxide melting sample-EDTA titration(as a substitute),which greatly shortens the measurement time and meets the testing requirements in production.This paper briefly describes the operation method,source of error and precautions of acid-soluble EDTA titration.