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    • 63. 发明授权
    • Foamed insulation refractory
    • 发泡绝缘耐火材料
    • US4158685A
    • 1979-06-19
    • US887088
    • 1978-03-16
    • Joseph S. Masaryk
    • Joseph S. Masaryk
    • C04B35/101C04B38/10C04B43/00
    • C04B38/10C04B35/101
    • A foamed insulating refractory shape is made by: (1) preparing a slip of water, deflocculating agent, refractory aggregate, at least 7.5% by weight cement, and, optionally, clay; (2) forming a foam of water, foaming agent, and air having a density not over about 5 lbs per cubic foot (80 g/l); (3) admixing the slip and the foam to form a foamed slurry with a viscosity between 1000 and 30,000 centipoises, the amount of water in the slip being adjusted to yield the desired viscosity in the foamed slurry; (4) pouring the foamed slurry into molds; (5) curing the pieces so formed at a temperature not over about 72.degree. F. (about 22.degree. C.) for about 16 to 24 hours; (6) drying the pieces at a temperature not over about 200.degree. F. (about 93.degree. C.); and (7) firing the pieces. The method of this invention produces insulating refractory shapes with higher strength-to-weight ratios than those produced by prior art methods.
    • 泡沫绝缘耐火材料的制造方法是:(1)制备水,抗絮凝剂,耐火骨料,至少7.5%(重量)水泥和任选的粘土; (2)形成密度不超过约5磅/立方英尺(80克/升)的水,发泡剂和空气的泡沫; (3)将滑动剂和泡沫体混合以形成粘度在1000至30,000厘泊之间的发泡浆料,调节滑动中的水量以在发泡浆料中产生所需的粘度; (4)将发泡浆料倒入模具中; (5)在不超过约72°F(约22℃)的温度下固化如此形成的碎片约16至24小时; (6)在不超过约200°F(约93℃)的温度下干燥片; 和(7)烧成片。 本发明的方法产生比现有技术方法制造的具有更高的强度重量比的绝热耐火材料形状。