铝锆碳质转炉挡渣闸阀开发与应用

硅酸盐通报 ›› 2018, Vol. 37 ›› Issue (1): 363-368.

铝锆碳质转炉挡渣闸阀开发与应用

郁书中;廖宁;李亚伟;彭学峰;桑绍柏;崔任渠

瑞泰马钢新材料科技有限公司,马鞍山,243000;武汉科技大学省部共建耐火材料与冶金国家重点实验室,武汉,430081

出版日期:2018-01-15 发布日期:2021-01-18

Development and Application of Al2O3-ZrO2-C Converter Slide Gates

YU Shu-zhong;LIAO Ning;LI Ya-wei;PENG Xue-feng;SANG Shao-bai;CUI Ren-qu

Online:2018-01-15 Published:2021-01-18

摘要/Abstract

摘要： 主要研究了膨胀石墨含量对低碳铝碳耐火材料的显微结构,力学性能和抗热震性的影响;在此基础上选择合适含量的膨胀石墨引入铝锆碳质转炉挡渣闸阀中,考察了转炉挡渣闸阀的现场服役行为.结果表明:膨胀石墨引入铝碳耐火材料中有助于促进碳化硅晶须的生长;正是由于碳化硅晶须以及膨胀石墨自身的强韧化作用,铝碳耐火材料热震后的残余强度由空白样的4.87 MPa提高至9.31 MPa,残余强度保持率由38%提高至54%.工业试验结果显示引入0.5wt%膨胀石墨的铝锆碳质转炉挡渣闸阀的平均使用寿命较传统滑板提高0.77次.

关键词: 转炉挡渣闸阀;膨胀石墨;力学性能;抗热震性

Abstract: The effects of contents of expanded graphite on the microstructure,mechanical properties and thermal shock resistance of low-carbon containing Al2O3-C refractories were firstly investigated. Accordingly,the field service behavior of Al2O3-C slide gates with proper content of expanded graphite addition was further evaluated.The results show that expanded graphite could stimulate the growth of SiC whiskers under high temperature.Attributing to the synergic strengthening and toughening effects of SiC whiskers and expanded graphite, the residual strength increases from 4.87 MPa to 9.31 MPa, correspondingly,the residual strength ratio varies from 38%to 54%.Also,the pilot test reveals that the average service lives of 0.5wt% expanded graphite containing Al2O3-ZrO2-C slide gates are 0.77 times longer than the traditional ones.

Key words: converter slide gate;expanded graphite;mechanical property;thermal shock resistance

中图分类号:

TF71

郁书中;廖宁;李亚伟;彭学峰;桑绍柏;崔任渠. 铝锆碳质转炉挡渣闸阀开发与应用[J]. 硅酸盐通报, 2018, 37(1): 363-368.

YU Shu-zhong;LIAO Ning;LI Ya-wei;PENG Xue-feng;SANG Shao-bai;CUI Ren-qu. Development and Application of Al2O3-ZrO2-C Converter Slide Gates[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2018, 37(1): 363-368.