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    • 3. 发明授权
    • Porous ceramic filter body and manufacturing method therefor
    • 多孔陶瓷过滤体及其制造方法
    • US4678758A
    • 1987-07-07
    • US668724
    • 1984-10-02
    • Konrad KampferWolfhart RiegerLudwig GaucklerMarco Dellapina
    • Konrad KampferWolfhart RiegerLudwig GaucklerMarco Dellapina
    • B01D39/20C04B38/08C21C1/00C22B9/02
    • B01D39/2075C04B38/08C21C1/00C22B9/023Y02P10/234
    • Ceramic, porous filter body in the designed to overcome the lack of high temperature resistant thermoshock resistant and mechanical stable bodies for the filtration of metals, preferentially of iron and ferrous alloys. This filter body has a temperature resistance of 1600.degree. C., a linear thermal coefficient of expansion of 3-7.times.10.sup.-6 /.degree.C. and consists of hollow spheres based on minimum one homogeneous distributed refractory material and another refractory material, which at high temperature by chemical reaction forms with the hollow spheres a solid refractory binding phase. A process for the production of such a filter body is described such, that the spheres of the refractory materials are mixed with a powderous binding phase, then formed to a porous body and then, by retention of the porous homogeneous structure under formation of new refractory compositions by heat treatment are chemically reacted, at least in the contact areas of the spheres.
    • PCT No.PCT / CH84 / 00012 Sec。 371日期1984年10月2日第 102(e)1984年10月2日日期PCT提交1984年1月27日PCT公布。 出版物WO84 / 03056 日期1984年8月16日。陶瓷多孔过滤器主体设计用于克服缺乏耐高温耐热和机械稳定体的过滤金属,优选铁和铁合金。 该过滤体的耐温性为1600℃,线性热膨胀系数为3-7×10-6 /℃,由基于最小均匀分布的耐火材料和另一种耐火材料制成的中空球组成, 温度通过化学反应形式与中空球形成固体耐火粘结相。 这样一种制造这种过滤体的方法被描述为使得耐火材料的球体与粉状结合相混合,然后形成多孔体,然后通过保留多孔均质结构形成新的耐火材料 至少在球体的接触区域内通过热处理的组合物进行化学反应。