针对攀钢连铸低合金钢生产中出现的问题 ,在分析稀土氧化物对保护渣性能影响及稀土元素与熔渣反应的基础上 ,通过原材料的选择、熔剂对保护渣性能作用规律的研究 ,设计了具有较强吸收溶解稀土氧化物能力 ,并且组元不与稀土元素反应的保护渣。经工业试验表明 ,研制的保护渣具有良好的使用效果 ,所浇铸坯表面质量优良 ,铸坯表面无清理率大于 90 %。保护渣润滑作用良好 ,漏钢发生率低。 Aiming at the problems that occur in the production of continuous casting low alloy steel in Panzhihua Iron and Steel Group, based on the analysis of the effect of rare earth oxides on the properties of mold fluxes and the reaction between rare earth elements and slag, through the selection of raw materials, A mold flux that absorbs rare earth oxides is strongly adsorbed and the components do not react with rare earth elements. The industrial tests show that the developed slag has a good effect, the surface quality of the cast slab is good, and the surface cleaning rate of the slab is no more than 90%. Slag lubrication is good, the incidence of breakout is low.