CaO对气淬钢渣中C2S等温析晶动力学影响规律  

Law of Isothermal Crystallization Kinetic of C_2S in Gas Quenching Slag Affected by CaO

作　　者：张玉柱[1] 鲍继伟[1] 龙跃[1] 邢宏伟[1] 

机构地区：[1]河北联合大学冶金与能源学院 河北省现代冶金技术重点实验室,河北唐山063009

出　　处：《钢铁》2013年第11期84-88,共5页Iron and Steel

基　　金：国家科技支撑计划资助项目(2012BAE09B00)

摘　　要：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 reconstruc heated some time at different temperatures. The law of crystallization and g ent CaO contents was analyzed by metallographic microscope and metallogra ted by CaO, and these slags were h of C2 S in those slags with differanalysis software. The law of isothermal crystallization kinetic of C2 S 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 CaO content. When alkalinity of slag is 3.25 and thermostat time is 30min, the C2S crystalline amount reaches maximum of 64.06 %. When alkalinity of slag os 3.25, the isothermal crystallization activation energy of C2 S rea ches a minimum of --6. 36 kJ/mol, and the energy barrier of isothermal crystallization of C2 S reaches minimum, which is most conducive for the crystallization of C2 S.

关 键 词：气淬钢渣 碱度 动力学 等温析晶 

分 类 号：TF701.3[冶金工程—钢铁冶金]