高炉炉衬侵蚀微观机理  

Microscopic mechanism of lining erosion in a blast furnace

作　　者：祁成林[1] 张建良[1] 蒋海冰[1,2] 孔德文[1] 杨阳[1] 王筱留[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]新余钢铁集团有限公司,新余338000

出　　处：《北京科技大学学报》2010年第9期1226-1231,共6页Journal of University of Science and Technology Beijing

摘　　要：对高炉上部中、低温区和下部高温区取砖样,应用热力学计算、扫描电镜和能谱分析等方法,从热力学和微观机理两方面研究了高炉衬砖侵蚀机理.结果表明:K对碳砖的侵蚀具有穿透力,Na则没有;K是通过K蒸气穿透到砖中,而Na是通过气体带着Na的化合物渗透到砖缝中.在高温区Zn对砖的侵蚀作用很小,中、低温区Zn对砖的侵蚀影响最大.With samples acquired from different temperature zones in a blast furnace （BF）,the erosion mechanism of linings was investigated in thermodynamics and micro-mechanism by thermodynamic calculations,SEM and EDS.The results indicate that bricks are penetrable for the steam of K,but Na penetrates in bricks by airflow mixed with Na compounds.Zn has a larger effect on lining erosion in middle and low temperature zones but much less in a high temperature zone.

关 键 词：高炉 炉衬 碱金属 侵蚀 机理 

分 类 号：TF573.1[冶金工程—钢铁冶金]