Influence of Dispersants on Flow Ability of Colloidal Alumina Bonded Corundum Castables  

作　　者：ZHANG Xiaohui YU Xingguo WANG Baoyu ZHU Boquan 

机构地区：[1]Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,China [2]Jiangsu Chianaref Refractory Co.,Ltd.,Yixing 214266,China [3]The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China

出　　处：《China's Refractories》2019年第4期26-30,共5页中国耐火材料（英文版）

摘　　要：In order to make corundum castables satisfy more severe service conditions in high temperature industries,colloidal alumina due to the same main component with corundum castables was introduced for a pure binding system.The influence of three dispersants(citric acid,FS10 and urea)on the flow ability of colloidal alumina bonded corundum castables was researched to choose a suitable dispersant for solving the shaping problem.In order to further understand the influence of dispersants on the flow ability and the mechanism,the rheological property and Zeta potential value of the colloidal aluminadispersant system and the matrix-colloidal alumina-urea-water system were tested.The results show the castables added with the urea have the best flow ability,and the appropriate addition of the urea is 0.5%.In order to make corundum castables satisfy more severe service conditions in high temperature industries, colloidal alumina due to the same main component with corundum castables was introduced for a pure binding system. The influence of three dispersants(citric acid, FS10 and urea) on the flow ability of colloidal alumina bonded corundum castables was researched to choose a suitable dispersant for solving the shaping problem. In order to further understand the influence of dispersants on the flow ability and the mechanism, the rheological property and Zeta potential value of the colloidal aluminadispersant system and the matrix-colloidal alumina-urea-water system were tested. The results show the castables added with the urea have the best flow ability, and the appropriate addition of the urea is 0.5%.

关 键 词：corundum castables colloidal alumina DISPERSANT citric acid FS10 UREA rheological property Zeta potential 

分 类 号：TQ1[化学工程]