阅读说明：本技术 耐火过滤器 (Fire-resistant filter ) 是由 戴维·贝尔 于 2020-10-29 设计创作，主要内容包括：一种适用于过滤熔融金属如钢水的耐火过滤器,以及用于生产所述过滤器的方法和粉状组合物。所述过滤器包括耐火材料,所述耐火材料包含：60-90重量％的氧化铝；8-30重量％的氧化锆；和3-20重量％的氧化镁。所述粉状组合物包含：60-90重量％的氧化铝；8-30重量％的氧化锆；和3-20重量％的氧化镁,其中所述粉状组合物包含小于12.5重量％的活性氧化铝、煅烧氧化铝或其混合物,并且其中剩余的氧化铝是片状氧化铝。所述方法包括：提供根据本发明的粉状组合物；由该粉状组合物和液体组分形成过滤器前体；和烧制该过滤器前体以形成耐火过滤器。(A refractory filter suitable for filtering molten metal, such as molten steel, and a method and powdered composition for producing the filter. The filter includes a refractory material comprising: 60-90% by weight of alumina; 8-30% by weight of zirconia; and 3-20 wt% magnesium oxide. The powdered composition comprises: 60-90% by weight of alumina; 8-30% by weight of zirconia; and 3-20 wt.% magnesium oxide, wherein the powdered composition comprises less than 12.5 wt.% of activated alumina, calcined alumina, or a mixture thereof, and wherein the remaining alumina is tabular alumina. The method comprises the following steps: providing a powdered composition according to the present invention; forming a filter precursor from the powdered composition and the liquid component; and firing the filter precursor to form the refractory filter.)