摘要
在测定铁矿石中全铁含量时,首先要将Fe(Ⅲ)还原为Fe(Ⅱ),然后再用重铬酸钾滴定Fe(Ⅱ)。采取在较深的HCl介质中,加入氟化氨后,氯化亚锡可以直接还原钨酸钠的方法,不需使用氯化汞、三氯化钛,可用于测定铁矿石中铁含量,结果满意。
In determination of total iron content in iron ores, Fe(Ⅲ) will first be reduced to Fe(Ⅱ) , then Fe(Ⅱ) will be titrated with potassium dichtomate. The author has used the following method, in denser HCl solution, by adding NH4F, Na2WO4 can be reduced by SnCl2 directly, without using the HgCl2 and TiCl3. The method can be used for determinating the iron content in iron ores with satisfactory results.
出处
《化工时刊》
CAS
2000年第6期35-36,共2页
Chemical Industry Times
关键词
重铬酸钾法
铁矿石
铁
测定
Postassium, Dichromate method, Iron ore, Iron
