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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。
The quenching and quenching of quenched and tempered steel slag with CaO was carried out. The quenched and tempered steel slag with different content of CaO was subjected to constant temperature heat treatment under different temperature conditions. The isothermal crystallization behavior of C2S in slag samples after heat treatment was statistically analyzed by metallographic microscope and metallographic analysis software The law of CaO on the isothermal crystallization kinetics of C2S was studied by the JMA equation proposed by Arvami et al. The results show that with the increase of CaO content, the amount of C2S crystallized in steel slag first increases and then decreases. When the alkalinity is 3.25 and the constant temperature time is 30min, the amount of C2S crystallized reaches the maximum of 64.06%. The alkalinity is 3.25, C2S isothermal crystallization activation energy minimum of -6.36kJ / mol, C2S crystallization energy barrier at this time the smallest, most conducive to C2S crystallization.