摘要
利用热重分析仪(TG-DTG)研究了微量元素铈加入沥青前后的热解动力学模型,测定了铈元素加入的炭阳极CO2/空气残余率并进行了XRD衍射分析。结果表明,随着微量元素铈的加入,热解速度放慢,热解温度区间变宽,表观活化能降低,热解反应更容易发生,沥青产焦率增加4.79个百分点;炭阳极晶粒厚度变大,减少了活性质点数;可提高炭阳极在CO2和空气中的残余率,可降低炭阳极的额外消耗。
Pyrolysis process of pitch before and after addition of cerium element was tested with TG-DTG method.Carbon anode reactivity was tested in CO2 and air atmosphere respectively.Microstructure of carbon anodes is tested by XRD.The results show that with addition of cerium elements,pyrolysis rate slowed down,pyrolysis temperature range broadened,apparent activation energy of pitch pyrolysis is reduced,pyrolysis reaction is easier to happen,and production rate of asphalt coke rises by 4.79 percent point.Carbon anode grain thickness is enlarged,living nature point is reduced,residual rate of carbon anode in CO2 and air are improved,and extra consumption of carbon anode is reduced.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2016年第7期30-33,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
贵州省科学技术基金项目(黔科合J字[2015]2110号)
贵州省科技计划项目(黔科合高G字[2012]4002)
贵阳市白云区科技项目(白科合同[2013]29号
[2015]31号)
关键词
铈
沥青
动力学
炭阳极
cerium
pitch
kinetics
carbon anode
