【摘要】 在测定方法基本原理不变的基础上提出使用钛-铁连测分析方法,可实现一次称样即可完成钛和铁的测定。在钛铁矿钛铁连测条件试验中,对选定的4个主要因素:硫-磷混酸用量、指示剂二苯胺磺酸钠浓度、溶液体积、滴定温度进行了正交试验研究,选定了最佳试验条件。在此条件下,以钛铁矿样品为基准进行3次实验,验证该实验条件的可行性,钛和铁的回收率在98.0%~102%区间内。应用钛铁连测方法测定结果与标准样对照,测定结果与标准样的结果接近。钛铁连测法测定结果与国标分别测定钛和铁的结果比较差异较小。更多还原

【Abstract】 The successive analysis method for titanium and iron determination is adopted based on that the basic principle of determination method remains the same,so that titanium and iron determination can be done after one time sample weighing. In the condition experiments for continuous determination of titanium and iron in ilmenite,the orthogonal experimental investigation on main four selective factors of the mixed sulfuric acid and phosphoric acid dosage,indicator sodium diphenylaminesulfonate concentration,solution volume and titration temperature were done,and the optimum experiment conditions are selected. Under this condition,three times tests were done based on ilmenite sample to verify the feasibility of experimental conditions,the recovery of titanium and iron is on the range of 98. 0% ~ 102%. The determination result by this continuous determination method is close to that of standard sample. And the determination result of this continuous determination method is close to that of the national standard method by which titanium and iron should be analyzed separately.更多还原