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    • 38. 发明申请
    • METHOD FOR PREPARING BARIUM TITANATE
    • 制备钛酸钡的方法
    • US20120258036A1
    • 2012-10-11
    • US13508620
    • 2010-07-20
    • Zhiguang JiangDong Hua
    • Zhiguang JiangDong Hua
    • C01F11/02
    • C01G23/006C01P2004/32C01P2004/51C01P2004/61C01P2006/80
    • Provided is a method for preparing barium titanate, which comprises: dissolving BaCl2.2H2O into TiCl4 solution to prepare Ba—Ti mixed solution with a Ba/Ti mol ratio of 1:1; adding ammonia and ammonium bicarbonate into deionized water to prepare synthetic agent with a NH4OH/NH4HCO3 mol ratio of 5:1; adding Ba—Ti mixed solution and synthesis agent into a reactor for synthesis to obtain a slurry; pressure filtering, thermal washing and then pressure filtering, to obtain a filter cake; calcining the filter cake for 1 hour at 590-610° C., followed by further calcining for 2 hours at 700-950° C.; crushing the obtained solid produced by a crusher, and thereby obtaining barium titanate. The obtained barium titanate is spherical, and has a narrower particle size distribution. The method reduces costs.
    • 提供制备钛酸钡的方法,其包括:将BaCl 2·2H 2 O溶解在TiCl 4溶液中以制备Ba / Ti摩尔比为1:1的Ba-Ti混合溶液; 将氨和碳酸氢铵加入去离子水中制备NH4OH / NH4HCO3摩尔比为5:1的合成试剂; 将Ba-Ti混合溶液和合成剂加入到合成反应器中以获得浆料; 压滤,热洗然后进行压滤,得到滤饼; 在590-610℃下煅烧滤饼1小时,然后在700-950℃进一步煅烧2小时。 粉碎由粉碎机得到的固体,得到钛酸钡。 得到的钛酸钡为球状,粒径分布较窄。 该方法降低成本。