文献类型：会议论文

英文题名：Manufacture of fine AL2O3granules as catalyst carrier by an extrusion/spheronization method

作者：Zhang, R.S.[1]; Pan, J.Z.[1]; Wang, L.W.[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Meilong Road, Shanghai, 200237, China

会议论文集：Materials and Product Technologies - 2008 International Conference on Advances in Product Development and Reliability, PDR2008

会议日期：August 4, 2008 - August 6, 2008

会议地点：Chengdu, China

语种：英文

外文关键词：Nanostructured materials - Coupling agents - Extrusion - Surface treatment - Carrier concentration - Aluminum oxide - Granulation - Particle size - Ceramic materials - Pelletizing - Alumina

摘要：The effect of formulation (filler's kind and amount, liquid's kind and concentration required for granulation) and spheronization time on characterization of alumina based pellets parameters (pellets size distribution, roundness and aspect ratio) were investigated. Two schemes were successfully proofed by extrusion/spheronization. The mean volume particle diameter was found to have a profound effect on the formulation and processing parameters. Alumina powder with large mean volume particle diameter showed different mechanism of action with coupling agent. With the surface modification, the water required for granulation had decreased. The existing formal and kinematic velocity of the water had a direct effect on the processing parameter of the extrusion and spheronization. Spheronization time from 2 to 10 min had a pronounced effect on roundness and aspect ratio. No changes in roundness and aspect ratio were observed from 10 to 20 min of spheronization time. ? 2008 Trans Tech Publications.