湿化学法制备纳米陶瓷粉体中膜清洗工艺基础研究  

STUDY ON NANOMETER CERAMIC POWDERS PREPARATION BY WASHING PROCESS OF CERAMIC MEMBRANE SEPARATION TECHNIQUE

作　　者：董强[1] 季兆全 廖翔 彭定坤[1] 孟广耀[1] 

机构地区：[1]中国科学技术大学材料科学与工程系,合肥230026 [2]长城新元膜科技有限公司,合肥230601

出　　处：《硅酸盐学报》2002年第z1期18-21,共4页Journal of The Chinese Ceramic Society

基　　金："863"项目2001AA323090。

摘　　要：以TiCl4水解法合成的TiO2超微粒子为对象,进行无机陶瓷微滤膜清洗过滤研究。考察了操作压力、错流速率、浆料浓度等工艺参数的影响,确立适合于超微粒子膜清洗过滤的工艺条件为0.1 MPa,5 m·s-1。实验结果表明,膜清洗过滤效率、操作方式以及产品质量等方面都明显优于目前工业生产上普遍应用的板框压滤机,为无机陶瓷微滤膜技术应用于湿化学法合成超微粒子清洗过滤提供了科学与工程化依据。The washing process by using ceramic micro-filtration membrane was studied for preparation of nanometer TiO2 powders by TiClf hydrolysis. The parameters of the washing conditions, such as the operation pressure, the cross flow velocity, the slurry concentration, were examined and optimized. The suitable conditions of membrane filtration are pressure 0.1 MPa and cross flow velocity 5 ms-1, respectively. The results show that the washing process by using ceramic membrane separation is superior to the traditional frame type filter and would be the advanced technique for ultrafine powders preparation by wet-chemical method.

关 键 词：纳米粉体 湿化学法 陶瓷膜 膜清洗 过滤 

分 类 号：TB303[一般工业技术—材料科学与工程]