作者：LI Yanjing1,2SUN Jialin1LI Yong1KANG Jian3MA Shulong2MA Fei3ZHANG Jili3

作者单位：1. School of Materials Science and Engineering, University of Science and Technology Beijing2. Beijing Jinyu Tongda Refractory Technology Co., Ltd.3. Gongyi Tongda Zhongyuan Refractory Technology Co., Ltd.

刊名：China’s Refractories

ISSN：1004-4493

出版年：2022-12-15

卷：31

期：4

起页：12-15

止页：

分类号：TQ175.1

语种：英文

关键词：

内容简介

Periclase-spinel bricks were prepared using sintered magnesia, flotation magnesia, fused magnesium aluminate spinel and calcined Al2O3 fines as the starting materials and calcium lignosulfonate as the binder, mixing, shaping and firing at 1 650 ℃.Flotation magnesia particles were used to replace ordinary sintered magnesia particles and different amounts of calcined Al2O3 fines were extra-added(0%, 3% and 5%, by mass) to investigate their effects on the properties of periclase-spinel bricks.The results show that: the periclase-spinel bricks prepared with flotation magnesia particles have reduced apparent porosity and cold compressive strength, and enhanced bulk density, thermal shock resistance, hot strength and hot toughness. As the calcined Al2O3 fines addition increases, the apparent porosity and the cold compressive strength decrease, and the bulk density,the thermal shock resistance, the hot strength and the hot toughness are improved.