用CaO对气淬钢渣进行调质重构，对不同CaO含量的气淬钢渣在不同温度条件下进行恒温热处理，利用金相显微镜和金相分析软件统计分析热处理后渣样中C2S等温析晶行为的规律， 采用Arvami等人提出的JMA方程研究CaO对C2S等温析晶动力学的影响规律。结果表明：随着CaO含量的增加，钢渣中C2S结晶量呈现出先增加后减少的趋势，在碱度为3.25，恒温时间为30min时，C2S结晶量达到最大为64.06%。碱度为3.25时，C2S等温析晶活化能最小为-6.36kJ/mol，此时C2S析晶的能量势垒最小，最有利于C2S析晶。

Gas quenching steel slag was adjusted the ingredients and reconstructed by CaO, and these slags were heated some time at different temperatures. The law of crystallization and growth of C2S in those slags with different CaO contents was analyzed by metallographic microscope and metallographic analysis software. The law of isothermal crystallization kinetic of C2S in gas quenching slag affected by CaO was studied by JMA equation. The results show that the C2S crystalline amount shows a decreasing trend after the first increase with the increasing of CaO content. When alkalinity of slag is 3.25 and thermostat time is 30min, the C2S crystalline amount reaches a maximum of 64.06%. When alkalinity of slag os 3.25, the isothermal crystallization activation energy of C2S reaches a minimum of -6.36kJ/mol, and the energy barrier of isothermal crystallization of C2S reaches minimum, which is most conducive for the crystallization of C2S.