Effects of Boron-containing Additive on the Properties of Al2O3-SiC-C Taphole Clay

摘要：

　　In this paper, the tap-hole clay of Al2O3-SiC-C system was studied. With fused white corundum, silicon carbide, coke, resin powder, silicon nitride-iron and ball clay as the main raw materials and boron -containing additive as sintering aids, the effects of the amount of boron-containing additive on the structure and properties of tap-hole clay were studied by means of TG, SEM and XRD. The results show that the bulk density (BD) decreases gradually with the increase of boron-containing additive, while the apparent porosity (AP) and hot modulus of rupture (HMOR) increase gradually and the tap-hole clay has good slag resistance. The boron-containing additive can promote the sintering of the tap-hole clay and makes the tap-hole clay volume shrink after treated at 1000 ℃. However, the formation of mullite compensates for the shrinkage produced by sintering after treated at 1450 ℃, and has a great influence on the linear change (LC), AP, BD and cold crushing strength (CCS). The experimental results show that the comprehensive performance of tap-hole clay is reasonable when the 4% of boron-containing additive is added.

关键词： tap-hole clay boron-containing additive sintering aids bulk density

作者: REN Haicheng WANG Shouye CAO Xiying FENG Haixia LIU Jun JIAO Yunjie

作者单位: State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research C Sinosteel Scie·tech Development Co.,Ltd.,Beijing 100080,China State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research C

会议类型: 国际会议

会议名称: Conference on Refractories International 2018, CRI2018)(2018国际耐火材料学术会议)

会议地点: 杭州

会议语种:英文

页码: 1-7

在线出版日期: 2018-10-17（万方平台首次上网日期，不代表论文的发表时间）