喷雾干燥法处理水合氧化锆  

Hydrous ZrO_2 treated by spray drying method

作　　者：林振汉[1] 张玲秀[1] 吴亮[1] 

机构地区：[1]上海大学锆材料研究中心,上海200072

出　　处：《中国有色金属学报》2005年第7期1118-1123,共6页The Chinese Journal of Nonferrous Metals

基　　金：国家重点新产品试制计划资助项目(2000G041D680023)

摘　　要：比较了采用直接煅烧、干燥后煅烧、喷雾干燥等3种方法处理水合ZrO2,再通过气流粉碎获得超微细粉ZrO2;同时用激光衍射法、光透法、场发射扫描电镜和BET法测试了粉末的性能。结果表明:直接煅烧水合ZrO2获得的粉末团聚严重,颗粒粗而均匀性差;水合ZrO2通过低温静止干燥,可以减少颗粒的团聚,提高粉末颗粒分布的均匀性,但效率低;喷雾干燥法处理水合ZrO2,通过动态反应,易获得细晶粒的球状颗粒,可避免粉末的团聚,且粉末分散性好、晶粒分布均匀。Three methods were used to treat hydrous ZrO2 such as direct sintering, sintering after drying, spray dring, then the ultra-fine ZrO2 powder was prepared by air-jet milling. The physical properties were tested by laser diffractrometry, light transmission, field emission scanning electron microscopy and Brunauer-Emmett-Teller （BET）. The results that, the powder sintered directly are agglomerated greatly, rough and not well-distributed. The powder sintered after drying, through static reaction, has lower agglomeration and better distribution, but lower efficiency. The ultra-fine powder prepared by spray drying method, through the dynamic reaction, not only can prohibit the agglomeration and be obtained easily, but also has well-distributed and good dispersibility.

关 键 词：水合氧化锆 喷雾干燥 光透法 场发射扫描电镜 超微细粉 

分 类 号：TQ134.1[化学工程—无机化工] TB383[一般工业技术—材料科学与工程]