高锰酸钾返滴定法测定高炉喷煤催化助燃剂中MnO2  

Determination of MnO2 in Combustion-supporting Agent of BF Coal Injection System by Back Titration of Potassium Permanganate

作　　者：李树金 苏佳新 殷瑞霞 

机构地区：[1]股份炼铁厂

出　　处：《莱钢科技》2012年第3期38-39,42,共3页Laigang Science & Technology

摘　　要：利用草酸钠将试样中的MnO2在稀硫酸介质中还原，趁热用高锰酸钾标准溶液进行滴定，利用草酸钠与高锰酸钾返滴定分析方法，找出了最佳的分析条件，提高了分析方法的精密度与准确度，分析结果令人满意。Using sodium oxalate, MnO2 in the sample was reduced in dilute sulphuric acid media, and titrated by potassium permanganate standard solution while still hot, then the optimum conditions were found out by back titration of sodium oxalate and potassium permanganate, moreover, the precision and accuracy of the analysis method was put forward, obtaining very satisfactory results.

关 键 词：稀硫酸介质 二氧化锰 草酸钠 高锰酸钾 

分 类 号：TF046.4[冶金工程—冶金物理化学]