不同种类铝镁尖晶石细粉对刚玉尖晶石浇注料性能的影响
Effect of different types of alumina-magnesia spinel fine powder on the properties of corundum spinel castables
阎宁波 1刘岩 1陈卢 1郭鹏 1钱凡1
作者信息
- 1. 中钢集团洛阳耐火材料研究院有限公司 先进耐火材料国家重点实验室,洛阳 471039
- 折叠
摘要
以板状刚玉颗粒和电熔尖晶石颗粒为骨料,以板状刚玉细粉、烧结或电熔尖晶石细粉、活性α-Al2O3 微粉为基质,高纯铝酸钙水泥为结合剂,振动浇注成型,经 1 550℃高温烧成后制备刚玉尖晶石试样.研究了不同厂家烧结尖晶石细粉和电熔尖晶石细粉的化学成分、物相组成和粒度分布对刚玉尖晶石浇注料显微结构、烧后永久线变化率、显气孔率、体积密度、常温抗折强度、高温抗折强度和常温耐压强度的影响.
Abstract
Tabular corundum particles and fused spinel particles as aggregates,tabular corundum fine powder,sintered or fused spinel fine powder,and reactive α-Al2O3 micro powder as the matrix,and high-purity calcium aluminate cement as the binder,are cast with vibration,and then calcined to 1 550℃to prepare corundum spinel samples.The effects of chemical composition,phase composition and particle size distribution of sintered spinel fine powder and fused spinel fine powder from different suppliers on the microstructure,permanent linear change rate after sintering,apparent porosity,bulk density,flexural strengths at room temperature and high temperature and compressive strength at normal temperature of corundum spinel castables are studied.
关键词
铝镁尖晶石/刚玉尖晶石浇注料/热震稳定性/抗折强度/耐压强度Key words
Alumina-magnesia spinel/Corundum spinel castables/Thermal shock stability/Flexural strength/Compressive strength引用本文复制引用
出版年
2024
NETL
NSTL
万方数据