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661 条记录 (耗时 0.022 秒)

    REFRACTORY FILTER
    2.
    发明公开
    REFRACTORY FILTER 审中-公开

    公开(公告)号：EP3815767A1

    公开(公告)日：2021-05-05

    申请号：EP19206498.8

    申请日：2019-10-31

    申请人： FOSECO INTERNATIONAL LIMITED

    发明人： BELL, David

    IPC分类号： B01D39/20

    摘要： A refractory filter suitable for filtering molten metal, such as steel, and a method and powdered composition for producing said filter. The filter comprises refractory material, said refractory material comprising: 60-90 wt% alumina; 8-30 wt% zirconia; and 3-20 wt% magnesia. The powdered composition comprises: 60-90 wt% alumina; 8-30 wt% zirconia; and 3-20 wt% magnesia, wherein the powdered composition comprises less than 12.5 wt% reactive alumina, calcined alumina or a mixture thereof, and wherein the remainder of the alumina is tabular alumina. The method comprises: providing a powdered composition in accordance with the invention; forming a filter precursor from the powdered composition and a liquid component; and firing the filter precursor to form a refractory filter.