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    • 87. 发明公开
    • Ceramic material
    • Keramisches材料。
    • EP0543581A1
    • 1993-05-26
    • EP92310400.4
    • 1992-11-13
    • FOSECO INTERNATIONAL LIMITED
    • Chadwick, RobertSiviter, CarlFarmer, Anthony D.
    • C04B38/08B28B1/00
    • F27D1/0006B28B1/00B28B7/348B28B7/42C04B35/111C04B35/14C04B35/185C04B35/624C04B38/08F27D5/00
    • A lightweight ceramic material is provided, useful for example as thermal insulation, kiln furniture or for metallurgical applications.
      Accordingly, a lightweight fired ceramic material comprises a set porous material in the form of a freeze-gelled ceramic sol composition containing hollow microspheres bonded together in a ceramic matrix.
      A method of making a lightweight fired ceramic shaped product is also provided in which a freeze-gellable ceramic sol composition is formed containing hollow microspheres, the composition is placed in a tool (21) of high thermal conductivity, the tool is cooled to irreversibly gel the sol composition, the monolith so formed is demoulded and allowed to thaw and is then fired to form a product comprising the microspheres bonded in a ceramic matrix.
    • 提供轻质陶瓷材料,例如用作隔热,窑具或用于冶金应用。 因此,重量轻的烧结陶瓷材料包括一种凝固的陶瓷溶胶组合物形式的多孔材料,该组合物含有在陶瓷基质中结合在一起的中空微球。 还提供了一种制造轻质烧制陶瓷成形产品的方法,其中形成含有中空微球的可冻结凝胶的陶瓷溶胶组合物,该组合物放置在具有高导热性的工具(21)中,将该工具冷却至不可逆凝胶 将溶胶组合物,如此形成的整料脱模并允许解冻,然后焙烧以形成包含以陶瓷基体结合的微球的产品。