Preparation of Corundum-mullite Castables for Purging Plug in Ladle

摘要：

　　Corundum-mullite castables were prepared using tabular corundum as the main raw materials, alumina micropowder and pure calcium aluminate cement as the bonding agents.Effects of mullite additions (0, 1c wt.%,2c wt.% and 3c wt.%) on properties of corundum-mullite castables were investigated.Results showed that,with the increasing of mullite additions, the MOR and HMOR of the specimens fired at 1600 ℃ declined sharply, linear change rate changed from positive to negative, and the apparent porosity declined while the retention ratio of the rupture strength dropped first, then decreased.Under the thermal shock service conditions,the cross-sectional cracking probability of corundum-mullite purging plug was reduced effectively, and the service life was improved significantly.

关键词： corundum-mullite castables tabular corundum ladle purging plug thermal shock resistance

作者: LIU Guotao WU Xiao LI Jianze QIN Yan ZHENG Rixu ZHENG Xiaoping

作者单位: Puyang Refractories Group Co.,Ltd.,Puyang 457100,China

会议类型: 国际会议

会议名称: 第七届国际耐火材料学术会议(ISR2016)

会议地点: 西安

会议语种:英文

页码: 1-4

在线出版日期: 2016-09-20（万方平台首次上网日期，不代表论文的发表时间）