Manufacture of Fine AL2O3 Granules as Catalyst Carrier by anExtrusion/Spheronization Method
The effect of formulation (fillers kind and amount,liquids kind and concentrationrequired for granulation) and spheronization time on characterization of alumina based pelletsparameters (pellets size distribution,roundness and aspect ratio) were investigated.Two schemeswere successfully proofed by extrusion/spheronization.The mean volume particle diameter wasfound to have a profound effect on the formulation and processing parameters.Alumina powder withlarge 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 formaland kinematic velocity of the water had a direct effect on the processing parameter of the extrusionand spheronization.Spheronization time from 2 to 10 min had a pronounced effect on roundness andaspect ratio.No changes in roundness and aspect ratio were observed from 10 to 20 min ofspheronization time.
Extrusion/Spheronization Alumina Sesbania Gum Ester Aluminates Coupling Agent
R.S.Zhang J.Z.Pan L.W.Wang
School of Mechanical and Power Engineering,East China University of Science and Technology,Meilong Road,Shanghai,200237,China
国际会议
成都
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）