ABSTRACT The potassium removal capacity of BaO-bearing blast furnace slags was investigated. The influence of basicity (CaO/SiO2), Al2O3 and BaO content on potassium removal capacity was analysed by combining with the activity of K2O in slag. The relationship between optical basicity and potassium removal capacity of slag was also studied. The results showed the temperature and basicity had a great influence on the potassium removal capacity. The increasing temperature and basicity made the reduction reaction of K2O enhance, leading to a significant decrease in potassium removal capacity. The activity of K2O in slag decreased with Al2O3 content increasing, which inhibited the reduction reaction of K2O, leading to the increase in potassium removal capacity. BaO had a slight effect on the potassium removal capacity, and the remaining K2O content in slag decreased with BaO content increasing from 0% to 5%. The higher optical basicity was, the weaker potassium removal capacity was.

中文翻译：

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含 BaO 高炉渣的除钾能力

摘要 研究了含 BaO 高炉渣的除钾能力。结合渣中K2O的活性，分析了碱度(CaO/SiO2)、Al2O3和BaO含量对除钾能力的影响。还研究了光碱度与炉渣脱钾能力的关系。结果表明，温度和碱度对除钾能力有很大影响。温度和碱度的升高使K2O的还原反应增强，导致除钾能力显着下降。随着Al2O3含量的增加，渣中K2O的活性降低，抑制了K2O的还原反应，导致除钾能力增加。BaO对除钾能力有轻微影响，随着BaO含量从0%增加到5%，渣中剩余K2O含量降低。光碱度越高，除钾能力越弱。