以石灰作为单一调节材料高温重构钢渣，利用 X 射线衍射、岩相分析、扫描电子显微镜研究了重构过程中钢渣的矿物组成及 RO 相的变化，并测定了重构钢渣的安定性和活性指数． 结果表明:RO 相在 CaO 作用下优先发生分解反应，其中的 FeO 随 CaO 掺量增加依次生成 Fe₃O₄ 、CF(铁酸一钙)、C₂ F(铁酸二钙)及 Ca₂ (AlFe)O₅ (铁铝酸钙)、C₄ AF(铁铝酸四钙)，其中的 MgO 部分以 MgO 晶体存在，部分固溶在硅酸盐相和液相中;当CaO/SiO₂ 摩尔比不够大时，原钢渣中的 C₃ S(硅酸三钙)在重构过程中分解成 C₂S(硅酸二钙);由于 CaO 优先与含量较高的铁元素反应，CaO/SiO₂ 摩尔比达到 3 时仍没有 C₃S 生成，只有当与铁反应完全后多余的 CaO 才会与 C₂S 反应生成 C₃S;石灰重构钢渣不会产生安定性不良且胶凝活性明显提高．

Steel slag was reconstructed by using lime as the single controlling material at a high temperature,and XRD,petrographic analysis and SEM techniques were adopted to determine the mineral composition of the modified steel slag as well as the transformation of the RO phase in the modification process.Moreover,the stability and the activity index of the modified steel slag were tested.The results demonstrate that (1) the RO phase primarily reacts with CaO,in which FeO phase is decomposed into Fe₃O₄ ,CF (calcium ferrite),C₂F (dicalcium ferrite), Ca₂ (AlFe)O₅ and C₄ AF (tetracalcium alumino-ferrite) successively with the increase of CaO content,and a part of MgO phase exists in the form of MgO crystal,and the others behave as the solid solution in the silicate and liquid phases; (2) when the CaO/SiO₂ mole ratio is not large enough,C₃ S (tricalcium silicate) in the original steel slag is resolved into C₂ S (dicalcium silicate) in the modification process; (3) no C₃ S generates even when the CaO/SiO₂ mole ratio reaches 3 because CaO primarily reacts with high-content iron; (4) only when the iron reacts completely,may the redundant CaO react with C₂ S to produce C₃ S; and (5) both the stability and the cementitious activity of the steel slag significantly improve after the modification by lime.