Effect of Andalusite Addition on Properties of Chrome-corundum Bricks

作     者：XIA Wenbin ZHAN Huasheng LI Jinyu LI Yanjing MA Shulong SU Yuzhu ZHANG Jili GAO Changhe XIA Wenbin;ZHAN Huasheng;LI Jinyu;LI Yanjing;MA Shulong;SU Yuzhu;ZHANG Jili;GAO Changhe

作者机构：Tongda Refractory Technologies Co.Ltd.Beijing 100043China 

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

年 卷 期：2020年第29卷第2期

页      面：21-24页

学科分类：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：andalusite chrome-corundum brick hazardous waste processing rotary kiln thermal shock resistance 

摘      要：In order to improve the thermal shock resistance of chrome-corundum bricks,different amounts of andalusite were added to the formulation of chrome-corundum bricks to replace the equivalent white fused corundum with the same particle *** mixing,shaping,drying and firing,the density,the cold strength,the cold wear resistance,the hot modulus of rupture and the thermal shock resistance were ***,SEM and elemental surface scanning were used to characterize the *** results show that:(1)the volume expansion of andalusite mullitization reduces the apparent porosity of chrome-corundum bricks;(2)the density and the hardness of mullite are lower than those of corundum so the decrease of the corundum content in brick leads to the decrease of the bulk density,the strength and the cold wear resistance;(3)the cross-distributed columnar mullite in the matrix can effectively improve the hot modulus of rupture and the thermal shock resistance of the specimens;(4)considering comprehensively,the andalusite addition shall not exceed 18%.