作为机车锅炉保温材料的石棉粉,其化学成分的不同,直接影响到保温性能和使用耐久性.因此,对石棉粉中的石棉、碳酸钙和镁的含量都有较严格的要求.通常的测定方法有机械分筛法和化学分析法,其中机械分筛法较为粗略,准确度低,在实验室中很少采用,而化学分析方法较多,然都不一致.为达到化学分析多快好省的目的,我们试验了用络合滴定法测 As a locomotive boiler insulation material asbestos powder, its different chemical composition, directly affect the insulation properties and durability, therefore, asbestos powder, asbestos, calcium carbonate and magnesium content has more stringent requirements. The usual determination Methods of mechanical screening and chemical analysis, including mechanical screening method is relatively rough, low accuracy, rarely used in the laboratory, and chemical analysis methods are more, of course, are inconsistent. To achieve more rapid and chemical analysis of the province The purpose, we tested using complexometric titration