【摘要】 以CaO(bal)-SiO2(22.4%)-Al2O3(11.6%)-CaF2(10%)精炼渣作为基础渣系,用BaO、Li2O替代其中等量的CaO含量,固定(CaO+RxO)/SiO2=2.5(RxO代表BaO或者Li2O),对该脱硫精炼渣系的熔点和粘度进行了研究。结果显示在传统的CaO基熔渣中加入BaO、Li2O可以降低渣系的熔点和粘度,有效地改善了渣钢反应的动力学条件。当(BaO,Li2O)=15%时,熔渣的熔点分别为1267℃和1185℃,远低于不加添加剂时的熔点1326℃,当温度为1475℃时,熔渣粘度分别为0.98Pa·s和0.51Pa·s,远小于不加添加剂时的粘度1.79Pa·s,使渣系具有良好的流动性和熔化性能。更多还原

【Abstract】 The melting point and viscosity of refining fluxes for desulphuration have been studied, of which CaO （balance）-SiO₂（22.4%）-Al₂O₃（11.6%）-CaF₂（10%） refining slag was as basic flux, when the ratio of （CaO+RxO）/SiO₂ was fixed at 2.5 （where RxO- BaO or Li₂O）, the BaO or Li₂O added and replaced equivalent CaO content in flux. The results showed that the melting point and viscosity of fluxes decreased by added BaO or Li₂O in CaO basic slag effectively to improve the dynamics condition of metal- slag reaction. With 15%BaO or 15%Li₂O, the melting point of flux was （1 267） ℃ or （1 185） ℃ which were far lower than that of flux free additions- 1326 ℃, and the viscosity of flux at （1 475） ℃ was 0.98 Pa·s or 0.51 Pa·s which were also far lower than that of flux free additions- 1.79 Pa·s to make the fluxes had excellent fluidity and melting capacity.更多还原