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炼钢过程中Ba是以碳酸钡的形式加入的,主要作用大致分二方面,一、Ba作为冶炼过程中的示踪元素,借钢渣中测定出的BaO量,根据回收率可计算出渣量;二、Ba同时又起置换作用,其原理与炼钢中加入Al、Ca有相同之处。 目前炉渣中BaO的测定方法很不理想,我们通过试验提出用原子吸收方法直接测定0.5～20％炉渣中BaO,方法简单,精度、准确度都能满足要求。BaO线性范围0～700μg/ml;特征浓度200μg/ml/0.2A,检出限7.9μg/ml,相对标准偏差6％(以2.5％BaO计)。
Ba is added in the form of barium carbonate during the steelmaking process, and the main effect is roughly divided into two aspects. First, Ba is used as a tracer element in the smelting process, and the amount of BaO determined in the slag is calculated according to the recovery rate ; Second, Ba plays the role of replacement at the same time, the principle of adding Al and Ca in steelmaking are the same. At present, the method for the determination of BaO in slag is very unsatisfactory. We propose to use the atomic absorption method to directly measure BaO in 0.5-20% slag, and the method is simple, accurate and accurate to meet the requirements. BaO linear range of 0 ~ 700μg / ml; characteristic concentration of 200μg / ml / 0.2A, the detection limit of 7.9μg / ml, the relative standard deviation of 6% (calculated as 2.5% BaO).