正交试验法优化高温烟气过滤陶瓷的制备工艺  

Optimization of Preparation Procedure for High Temperature Exhaust Gas Filtering Ceramics by Orthogonal Test

作　　者：田维[1,2] 税安泽[1] 祝乐民 Tian Wei Shui Anze Zhu Lemin(College of Materials Science and Engineering, South China University of Technolo gy, Guangzhou, 510641 Foshan Oceano Ceramics Co. Ltd., Guandong, Foshan, 528100)

机构地区：[1]华南理工大学材料学院,广州510641 [2]佛山欧神诺陶瓷股份有限公司,广东佛山528100

出　　处：《陶瓷》2017年第3期12-18,共7页Ceramics

基　　金：广东省公益研究与能力建设项目(项目编号:2015B010105009);广州市科技计划项目(项目编号:201300000126);广东省应用型科技研发专项(项目编号:2015B090927002);广东省产学研合作协同创新与平台环境建设项目(项目编号:2014B090903003)

摘　　要：笔者以堇青石为过滤陶瓷骨料,高岭土、钾长石、锂辉石为主要原料的低热膨胀体系为过滤陶瓷结合剂,以木炭粉为造孔剂,通过半干压成形工艺制备高温烟气过滤陶瓷。以所得试样的显气孔率和抗压强度为目标函数,以球磨时间、成形压力、烧成温度及保温时间的工艺参数为变量进行正交优化设计。结果表明,烧成保温时间对显气孔率和抗压强度影响最大;试样获得最大显气孔率和最大抗压强度的最佳方案为球磨时间0 min,成形压力6 MPa,烧成温度1 250℃,烧成时间30 min。Filtering ceramic for high temperature exhaust gas were prepared by semi dry pressing molding with cordierite as the base material, potash feldspar, spodumene, kaolin as bonding agents and charcoal as pore former in this study. The orthogonal optimization design was carried out by taking the compressive strength and apparent porosityof the sample as objective functions, taking the milling time, semi--dry pressing molding pressure, sintering temperature and sintering holding time asdesign variables. The results show that, optimal apparent porosity and compressive strength are obtained under the condition ofthe milling time for 0 minutes, semi--dry pressing molding pressure for 6 MPa, sintering tempera- ture of 1 250 ℃ and sintering holding time for 30 minutes.

关 键 词：过滤陶瓷 结合剂 造孔剂 半干压成形 

分 类 号：TQ174.75[化学工程—陶瓷工业]