Application of Activated Alumina Powders in Corundum Castables

作     者：LI Youqi DING Jinxing CUI Qingyang ZHAO Jizeng 

作者机构：Beijing Lier High-Temperature Materials Co.Ltd.Beijing 102211China Luoyang Lier Functional Materials Co.Ltd.Luoyang 471023China 

出 版 物：《China's Refractories》 (中国耐火材料（英文版）)

年 卷 期：2019年第28卷第2期

页      面：12-17页

学科分类：0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：activated alumina powder corundum castables calcium hex-aluminate 

摘      要：There are many brands of activated alumina powders in the market and the products from different manufacturers exist subtle differences. In this work, four brands of activated alumina powder which are the mainstream products in China with the same marked particle size of 2-3 μm were added to corundum castables to investigate the effect of different activated alumina powder on properties of corundum castables. It is found that the multi-peak distribution, round-shape particle,low impurities content of alumina powder are of great benefit to the improvement of the overall performance of *** CA6 frame structure formed in castables matrix is conductive to improving the thermal shock resistance and high temperature strength of castables. One kind of domestic alumina micropowder studied in this work has good application value and prospect in corundum castables because of the excellent comprehensive performance.