Method of priming filter for molten metal
    3.
    发明授权
    Method of priming filter for molten metal 有权
    熔融金属过滤器起动方法

    公开(公告)号:US07666248B2

    公开(公告)日:2010-02-23

    申请号:US10590472

    申请日:2005-02-23

    IPC分类号: C22B9/02

    CPC分类号: B22D43/004 B22D11/119

    摘要: A method is described for priming an in-line molten metal filtration unit having a porous ceramic or refractory filter mounted substantially horizontally in a filter box. This filter box has an inlet for molten metal and an outlet for molten metal, the outlet being a closeable outlet in an exit well connecting to the downstream side of the filter. The method of the invention comprises the steps of adding a molten metal to the filter box sufficient to entirely cover the upstream side of the filter with a depth of molten metal and temporarily sealing the outlet in the exit well. A steadily increasing vacuum is then applied to the closed exit well at a rate between 0.1 and 10 kPa per second by withdrawing a stream of air from the exit well by means of a fan or air venturi until molten metal begins to flow through the filter. At that point the vacuum is quickly released and the molten metal outlet is opened. Once the filter has been primed in this manner, flow of metal through the filter continues while requiring only a relatively low head of molten metal on the inlet side of the filter.

    摘要翻译: 描述了一种用于启动具有基本水平地安装在过滤箱中的多孔陶瓷或耐火过滤器的在线熔融金属过滤单元的方法。 该过滤箱具有用于熔融金属的入口和用于熔融金属的出口,该出口是连接到过滤器下游侧的出口孔中的可关闭的出口。 本发明的方法包括以下步骤:将熔融金属添加到过滤箱中,足以使熔融金属的深度完全覆盖过滤器的上游侧并临时将出口密封在出口孔中。 然后通过风扇或空气文氏管从出口孔排出空气流,直到熔融金属开始流过过滤器,然后以0.1至10kPa /秒的速率将稳定增加的真空施加到封闭的出口孔。 此时,真空快速释放并且熔融金属出口打开。 一旦过滤器以这种方式被喷涂,金属通过过滤器的流动继续进行,同时仅需要在过滤器的入口侧上较低的熔融金属头。

    Method of Priming Filter for Molten Metal
    4.
    发明申请
    Method of Priming Filter for Molten Metal 有权
    熔融金属过滤器的方法

    公开(公告)号:US20080053275A1

    公开(公告)日:2008-03-06

    申请号:US10590472

    申请日:2005-02-23

    IPC分类号: C22B9/02 C22B9/04

    CPC分类号: B22D43/004 B22D11/119

    摘要: A method is described for priming an in-line molten metal filtration unit having a porous ceramic or refractory filter mounted substantially horizontally in a filter box. This filter box has an inlet for molten metal and an outlet for molten metal, the outlet being a closeable outlet in an exit well connecting to the downstream side of the filter. The method of the invention comprises the steps of adding a molten metal to the filter box sufficient to entirely cover the upstream side of the filter with a depth of molten metal and temporarily sealing the outlet in the exit well. A steadily increasing vacuum is then applied to the closed exit well at a rate between 0.1 and 10 kPa per second by withdrawing a stream of air from the exit well by means of a fan or air venturi until molten metal begins to flow through the filter At that point the vacuum is quickly released and the molten metal outlet is opened. Once the filter has been primed in this manner, flow of metal through the filter continues while requiring only a relatively low head of molten metal on the inlet side of the filter.

    摘要翻译: 描述了一种用于启动具有基本水平地安装在过滤箱中的多孔陶瓷或耐火过滤器的在线熔融金属过滤单元的方法。 该过滤箱具有用于熔融金属的入口和用于熔融金属的出口,该出口是连接到过滤器下游侧的出口孔中的可关闭的出口。 本发明的方法包括以下步骤:将熔融金属添加到过滤箱中,足以使熔融金属的深度完全覆盖过滤器的上游侧并临时将出口密封在出口孔中。 然后通过风扇或空气文氏管抽出出口孔中的空气流,以0.1至10kPa /秒的速率将稳定增加的真空施加到封闭的出口孔,直到熔融金属开始流过过滤器。 这样就可以快速地释放真空并且打开熔融金属出口。 一旦过滤器以这种方式被喷涂,金属通过过滤器的流动继续进行,同时仅需要在过滤器的入口侧上较低的熔融金属头。