硫酸渣是一种铁含量高的硫酸副产品,广泛应用于钢铁及水泥行业。全铁含量是供需双方主要的结算指标,但目前尚无相应的检测标准,大都采用《硫铁矿和硫精矿中全铁含量的测定》。该方法能耗高(11～14 kW.h),检测时间长(3～4 h)。因此,经过摸索,利用盐酸溶样,重铬酸钾氧化还原滴定二价铁离子,取得了较好的效果。 Sulfuric acid residue is a byproduct of sulfuric acid with high iron content and is widely used in the steel and cement industries. Total iron content is the main settlement indicator of both supply and demand, but there is no corresponding test standards, most of the “total iron content of pyrite and sulfur concentrate determination.” The method is characterized by high energy consumption (11 ~ 14 kW.h) and long detection time (3 ~ 4 h). Therefore, after exploration, the use of hydrochloric acid solution, potassium dichromate redox titration ferrous ions, and achieved good results.