材料期刊网

利用扫描电子显微镜的X射线能谱仪等手段观察了鞍钢转炉钢渣的矿物形貌，测定了矿物的元素成分，结果表明：鞍钢转炉钢渣中主要矿物相为C2S、铁铝钙、镁铁相固溶体和少量的C3S、f-CaO与f-MgO；发现鞍钢转炉渣中RO相的主要组织为镁铁相，含量约10%～20%，MgO/FeO的典型比例约为1:2；鞍钢转炉渣f-CaO含量约为2.08%～7.79%，f-MgO含量约为0.16%～0.41%；微观形貌和化学分析结果均证明鞍钢转炉钢渣安定性的主要影响因素为f-CaO含量；而游离氧化镁的单相组织极少，对转炉渣的安定性影响主要取决于RO相。

The microstructure of converter slag samples from Ansteel are observed by the scanning electron microscope with X-ray energy dispersive spectrometer, and the element composition of micro-regions in the mineral phase are determined. The results show that the main phases in the slag are C2S, Fe2O3 –Al2O3–CaO and MgO–FeO solid solution, and the minor minerals are C3S, free-CaO and free-MgO. The main organization of RO phase are found for the MgO–FeO solid solution in Anteel converter slag, which contents are approximately 10%~20%, and the representative proportion of MgO/FeO approximately is 1:2; The f-CaO content of Ansteel converter slag is approximately 2.08%~7.79%, and the f-MgO content is approximately 0.16%~0.41%; The microscopic images and the chemical analysis results proved that the major effect factor of steel slag stability is the content of f-CaO; while free-magnesia single-phase organization are very few, which impact of the stability of converter slag mainly depends on the RO phase.