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    Process for making acid activated bleaching earth using high susceptibility source clay and novel bleaching earth product
    3.
    发明授权
    Process for making acid activated bleaching earth using high susceptibility source clay and novel bleaching earth product 失效
    使用高敏感性粘土和新型漂白土制品制备酸活化漂白土的方法

    公开(公告)号：US5008226A

    公开(公告)日：1991-04-16

    申请号：US352578

    申请日：1989-05-16

    申请人： Dennis R. Taylor ,  Charles B. Ungermann

    发明人： Dennis R. Taylor ,  Charles B. Ungermann

    IPC分类号： B01J20/12

    CPC分类号： B01J20/12

    摘要： A process for making acid-activated bleaching earth from certain naturally occurring mixtures of calcium bentonite and attapulgite clay. The process involves treating such clay with low levels of activating acid which are mixed with the dried and ground clay, or spray dried from slurries containing the clay-acid mixture. Advantages include: lower acid costs/unit mass of clay treated, lower production costs (no washing, filtering, or waste treatment steps) and environmental soundness (no harmful environmental waste products are produced).

    摘要翻译： 从钙膨润土和绿坡缕石粘土的某些天然存在的混合物制备酸活化漂白土的方法。 该方法包括用低水平的活化酸处理这种粘土，其与干燥和研磨的粘土混合，或者从含有粘土酸混合物的浆料喷雾干燥。 优点包括：降低酸性成本/处理粘土单位质量，降低生产成本（无洗涤，过滤或废物处理步骤）和环境健全（不产生有害环境废物）。

    Process for making acid activated bleaching earth using high susceptibility source clay and novel bleaching earth product
    4.
    发明授权
    Process for making acid activated bleaching earth using high susceptibility source clay and novel bleaching earth product 失效
    使用高敏感性粘土和新型漂白土制品制备酸活化漂白土的方法

    公开(公告)号：US5008227A

    公开(公告)日：1991-04-16

    申请号：US352790

    申请日：1989-05-16

    申请人： Dennis R. Taylor ,  Charles B. Ungermann

    发明人： Dennis R. Taylor ,  Charles B. Ungermann

    IPC分类号： B01J20/12

    CPC分类号： B01J20/12

    摘要： A process for making acid-activated bleaching earth from a crude attapulgite clay. A crude is selected which is mildly acidic and contains at least about 90% attapulgite. The process involves treating such clay with low levels of activating acid which are mixed with the dried and ground clay, or spray dried from slurries containing the clay-acid mixture. Advantages include: lower acid costs/unit mass of clay treated, lower production costs (no washing, filtering, or waste treatment steps) and environmental soundness (no harmful environmental waste products are produced).

    摘要翻译： 从粗凹凸棒土制造酸活化漂白土的方法。 选择一种轻度酸性并含有至少约90％的绿坡缕石的粗品。 该方法包括用低水平的活化酸处理这种粘土，其与干燥和研磨的粘土混合，或者从含有粘土酸混合物的浆料喷雾干燥。 优点包括：降低酸性成本/处理粘土单位质量，降低生产成本（无洗涤，过滤或废物处理步骤）和环境健全（不产生有害环境废物）。