Apparatus for emptying containers filled with powder
    1.
    发明授权
    Apparatus for emptying containers filled with powder 失效
    用于清空装满粉末的容器的装置

    公开(公告)号:US4445809A

    公开(公告)日:1984-05-01

    申请号:US488552

    申请日:1983-04-25

    CPC分类号: B65G53/42

    摘要: Powders with a relatively low bulk density can be emptied from transportation containers only with a large and undesired production of dust. The apparatus for emptying powder-filled containers consists of a suction tube on which a fluidizing device is arranged in the neighborhood of the open end of the tube. This fluidizing device can have the form of a double-jacketed cone concentrically about the tube, or a hollow sphere concentrically about the tube. Fluidizing air can be introduced into the powder through bores arranged in the direction of the opening of the tube. To prevent the suction tube being sucked onto the container wall, the opening of the suction tube has a crenelated edge.

    摘要翻译: 具有相对较低堆积密度的粉末可以从运输容器中排空,只有大量且不期望的灰尘产生。 用于排空填充粉末的容器的装置由抽吸管组成,其中流化装置布置在管的开口端附近。 该流化装置可以具有围绕管同心的双夹套锥体的形式,或者围绕管同心的中空球体。 可以通过沿管的开口方向布置的孔将流化空气引入到粉末中。 为了防止抽吸管被吸入到容器壁上,吸入管的开口具有楔形边缘。

    Hydrophobic filler mixtures, process for its production and use
    3.
    发明授权
    Hydrophobic filler mixtures, process for its production and use 失效
    疏水性填料混合物,其生产和使用过程

    公开(公告)号:US4307023A

    公开(公告)日:1981-12-22

    申请号:US165645

    申请日:1980-07-03

    IPC分类号: C08K3/36 C08K9/06 C09C3/12

    CPC分类号: C08K3/36 C08K9/06

    摘要: There is produced a hydrophobic mixture for RTV and LTV silicone rubber by applying a hydrophobizing agent to a precipitated silica, homogeneously mixing this powdery concentrate into a pyrogenically produced silica, tempering the mixture and mechanically compacting. The hydrophobic filler mixture obtained in the untempered condition consists of:Pyrogenically produced silica: 50 to 85 weight %Precipitated silica: 5 to 40 weight % (e.g. 5 to 30 weight %)Hydrophobization agent: 8 to 30 weight %Aluminum oxide: 0.5 to 5 weight %.

    摘要翻译: 通过将疏水化剂施用到沉淀二氧化硅上,将该粉末状浓缩物均匀地混合到热解法生产的二氧化硅中,回火混合物并机械压实,产生RTV和LTV硅橡胶的疏水性混合物。 在未回火条件下获得的疏水性填料混合物包括:热解产生的二氧化硅:50至85重量%沉淀二氧化硅:5至40重量%(例如5至30重量%)疏水化剂:8至30重量%氧化铝:0.5至 5重量%。