Si粉对刚玉-莫来石砖性能的影响  

Effect of Si powder on properties of corundum-mullite bricks

作　　者：马淑龙 王治峰 马飞 康剑 张积礼 高长贺 Ma Shulong;Wang Zhifeng;Ma Fei;Kang Jian;Zhang Jili;Gao Changhe(Beijing Jinyu Tongda Refractory Technologies Co.,Ltd.,Beijing 100085,China;不详)

机构地区：[1]北京金隅通达耐火技术有限公司,北京100085

出　　处：《耐火材料》2022年第4期309-311,共3页Refractories

基　　金：国家重点研发计划资助项目(2018YFC1901504)。

摘　　要：以棕刚玉、α-Al_(2)O_(3)粉、红柱石粉、广西白泥等为原料制备了刚玉-莫来石砖。为了提高刚玉-莫来石砖的抗渣铁侵蚀和冲刷,引入2%(w)的Si粉,对比分析了Si粉引入前后试样的性能。结果表明,与未引入Si粉的刚玉-莫来石试样相比,引入Si粉的试样气孔均匀细小,显气孔率从15.8%降至13.5%,常温耐压强度明显提高,高温抗折强度提高了5.6倍,高温韧性与抗渣铁侵蚀、渗透性明显改善。The corundum-mullite bricks were prepared using brown corundum,α-Al_(2)O_(3) powder,andalusite powder,and Guangxi white mud as raw materials.In order to improve the iron slag erosion and corrosion resistance of corundum-mullite bricks,2 mass%Si powder was introduced into the corundum-mullite bricks,and the properties of the samples were compared before and after Si powder addition.The results show that compared with the corundum-mullite sample without Si powder,the sample with Si powder has uniform and small pores,and the apparent porosity decreases from 15.8%to 13.5%,the cold compressive strength increases obviously,the hot modulus of rupture increases by 5.6 times,the hot toughness and the iron slag corrosion resistance and the penetration resistance are obviously improved.

关 键 词：高炉 SI粉 刚玉-莫来石砖 抗渣铁侵蚀性 高温抗折强度 

分 类 号：TQ175[化学工程—硅酸盐工业]