有害元素(K,Na,Zn,Pb)对高炉用耐火砖的侵蚀实验  

Experimental Study on Erosion of Hazardous Elements(K,Na,Zn,Pb) to Refractory Brick for Blast Furnace

作　　者：丁跃华[1] 罗志俊[1] 宁哲[1] 李博[1] 

机构地区：[1]昆明理工大学材料与冶金工程学院,云南昆明650093

出　　处：《昆明理工大学学报（理工版）》2009年第1期18-22,共5页Journal of Kunming University of Science and Technology(Natural Science Edition)

基　　金：云南省科技攻关及高新技术发展计划项目(项目编号:2006GG07)

摘　　要：针对昆钢高炉使用的耐火砖，进行了K，Na，zn，Pb单独和混合作用的侵蚀实验，考察了时间、温度对侵蚀的影响．由实验确认：自焙碳砖和石墨碳砖抵抗有害元素侵蚀性能比复合棕刚玉砖更优越；K，Na侵入复合棕刚玉砖和自培碳砖的适宜温度区间为800～1000℃，而对石墨碳砖K，Na的侵入与温度呈正相关关系；较低的实验温度更有利于Zn对砖体的侵蚀，温度对Pb的侵入影响不大．砖体内有害元素含量均随侵蚀时间的延长而增加．The erosion experiments of K, Na, Zn and Pb to refractory bricks used in blast furnaces of KISCO are performed separately and combinedly to determine the effects of temperature and time on erosion by these hazardous elements. The following results are shown through the experiments： selfbaking carbon bricks and graphite carbon bricks are better to resist erosion of hazardous elements than corundum bricks; the favorable temperature erosion range of K, Na on composite brown corundum bricks and selfbaking bricks is 800 - 1 000 ℃ whereas the erosions of K and Na on graphite carbons bricks are in direct proportion to temperatures; low temperatures are in favor of the erosion of Zn to bricks ; and the effect of temperatures on the erosion of Pb is not obvious. Hazardous contents in the bricks are increased with erosion time.

关 键 词：耐火砖 侵蚀 膨胀率 高炉 金属冶炼 铁矿 

分 类 号：TF065.1[冶金工程—冶金物理化学]