无机陶瓷膜提纯凹凸棒石粘土的工艺  

Study on Purification of Attapulgite with Inorganic Ceramics Membranes

作　　者：周轶[1] 韶晖[1] 吴琦刚[1] 钟璟[1] 姚超[1] 

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2012年第4期16-19,共4页Journal of Changzhou University：Natural Science Edition

基　　金：江苏省凹土资源利用重点实验室开放课题(HPK201105);江苏省自然科学基金基础研究计划(BK2011240);江苏省环保厅科研课题(201126)

摘　　要：采用无机陶瓷微滤膜提纯凹凸棒石粘土,考察了陶瓷膜孔径、操作条件和料液性质对微滤过程的影响。实验结果表明,不同的膜孔径,微滤通量和截留率不同,采用孔径为0.2μm的陶瓷膜,渗透通量为48.5L/(m2.h),截留率超过99%。确定了合适的实验过程工艺参数:操作压力0.12MPa;膜面流速1m/s;凹土料液浓度20g/L;料液温度323K;pH值6.0。The microfiltration separation process of attapulgite clay was studied with inorganic ceramic membrane.The influence of operation parameters,including membrane pore size,operation condition（pressure and temperature）,and the solution properties of the permeation flux and retention rate were studied respectively.The results showed that permeation flux and retention rate were different for different membrane pore size.The permeation flux was 48.5 L/（m2·h） and retention rate was above 99% when the pore size of membrane was 0.2 μm.The optimum parameters obtained include operating pressure 0.12 MPa,operating temperature 323 K,cross-flow velocity flux 1.0 m/s,mass concentration of the suspension 20 g /L and pH 6.0.

关 键 词：无机陶瓷膜 凹凸棒土 提纯 

分 类 号：TQ028.8[化学工程]