合成精炼渣对钢水脱磷作用的研究

采用CaO-Al2O3-MgO-BaO-CaF2渣系,在实验室内依据冶金热力学和动力学理论进行热模拟实验,对不同量的原料配比进行了精炼渣的脱磷实验,系统的分析了初始磷含量、碱度、光学碱度、BaO、CaF2等因素对脱磷能力和脱磷反应速率的影响。研究表明,BaO部分取代CaO时,脱磷率高,碱度小于30,光学碱度小于0.9,CaF2在16%-18%,脱磷率高。

Study on molten steel dephosphorization by effect of synthetic refining slags

CaO-Al2O3-MgO-BaO-CaF2 slags were adopted, and the thermal simulation experiment was carried out according to dynamics and thermodynamic of metallurgy in laboratory. The refining slag dephosphorization experiment with raw material of different quantity was carried out. The initial phosphorus content and the factors such as basicity, optical basicity, BaO and CaF2 that influence the dephosphorization ability and dephosphorization reaction speed were systematically analyzed. Conclusions are reached that when initial content of phosphorus is high, BaO replaces CaO partially, so dephosphorization efficiency is high and basici ty is smaller than 30, optical basicity is smaller than 0.9, CaF2 is 16% - 18%, and dephosphorization rate are higher.