Method for producing spherical silica particles
    2.
    发明授权
    Method for producing spherical silica particles 有权
    球形二氧化硅粒子的制造方法

    公开(公告)号:US06267942B1

    公开(公告)日:2001-07-31

    申请号:US09445424

    申请日:2000-03-16

    IPC分类号: C01B3312

    CPC分类号: C01B33/16

    摘要: It is an object of the present invention to obtain solid spherical silica particles having no depression or crack on the surface. The present invention provides a process for producing spherical silica particles, which comprises dispersing silica gel particles having an average particle size of from 0.05 to 3.0 &mgr;m in a mixed solution of an alkali silicate and an acid, spraying the dispersion to obtain droplets, and heating the droplets in a gas and gelating the mixed solution portion of an alkali silicate and an acid in the droplets.

    摘要翻译: 本发明的目的是获得在表面上没有凹陷或裂纹的固体球形二氧化硅颗粒。 本发明提供一种球状二氧化硅粒子的制造方法,其特征在于,在碱硅酸盐和酸的混合溶液中分散平均粒径为0.05〜3.0μm的硅胶粒子,喷雾分散液,得到液滴,加热 气滴中的液滴并使液体中的碱性硅酸盐和酸的混合溶液部分凝胶化。

    Process for producing a spherical silica gel
    4.
    发明授权
    Process for producing a spherical silica gel 失效
    球形硅胶的制造方法

    公开(公告)号:US06451862B1

    公开(公告)日:2002-09-17

    申请号:US09704608

    申请日:2000-11-03

    IPC分类号: C01B33152

    摘要: A process for producing a spherical silica gel, which comprises supplying a liquid mixture of an alkali silicate solution and an acid solution to a spraying apparatus, spraying the liquid mixture to obtain droplets, bringing the droplets into contact with a liquid for recovering a silica gel, and recovering the formed spherical silica gel together with the liquid for recovering a silica gel, as a slurry.

    摘要翻译: 一种制备球形硅胶的方法,其包括将碱性硅酸盐溶液和酸溶液的液体混合物供应到喷雾装置,喷雾所述液体混合物以获得液滴,使所述液滴与用于回收硅胶的液体接触 ,并将形成的球形硅胶与用于回收硅胶的液体一起作为浆料回收。