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    • 4. 发明授权
    • Continuous method for preparation of granulated sodium perborate
    • 制备颗粒状过硼酸钠的连续方法
    • US4968500A
    • 1990-11-06
    • US355845
    • 1989-05-17
    • Birgit Bertsch-FrankKlaus MuellerThomas Lieser
    • Birgit Bertsch-FrankKlaus MuellerThomas Lieser
    • B01J2/00C01B15/12
    • C01B15/12B01J2/00C01B15/126
    • The spray drying of a solution containing hydrogen peroxide and sodium metaborate to obtain primary particles which are immediately conveyed after leaving the drying zone to a granulating device and are then granulated in the presence of free and/or perborate water of crystallization. The granulated materials are dried, if necessary. The generally amorphous primary particles are converted into granulated materials with at least partially crystalline structure and significantly improved shelf life. The work is performed with advantage in a spray dryer with integrated fluid bed or in a compressing granulating device. The method is suitable for preparing perborate granulated materials with over 10% by wt., especially perborate monohydrate granular materials with 14-16% by wt. active oxygen.
    • 喷雾干燥含有过氧化氢和偏硼酸钠的溶液,以获得在离开干燥区之后立即输送到造粒装置的一次颗粒,然后在游离和/或过硼酸水结晶的存在下造粒。 如果需要,将造粒材料干燥。 将一般无定形的一次粒子转化成具有至少部分晶体结构并显着提高保质期的造粒材料。 在具有集成流化床的喷雾干燥器中或在压缩造粒装置中有利地进行该工作。 该方法适用于制备超过10重量%的过硼酸盐造粒材料,特别是具有14-16重量%的过硼酸盐一水合物颗粒材料。 活性氧。