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    • 5. 发明申请
    • CERAMIC GLASS COMPOSITION
    • 陶瓷玻璃组合物
    • WO1995006012A1
    • 1995-03-02
    • PCT/US1994009055
    • 1994-08-10
    • THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK
    • THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORKCHIANG, Joseph, F.CHEN, PinzhenXU, You-Wu
    • C03C03/091
    • C03C1/002C03C3/091C04B35/195
    • A ceramic glass composition comprises: between about 35 and 55 % by weight SiO2; between about 18 and 28 % by weight Al2O3; between about 1 and 5 % by weight CaO; between about 7 and 14 % by weight MgO; between about 0.5 and 5 % by weight TiO2; between about 0.4 and 3 % by weight B2O3; and greater than 0 and up to about 1 % by weight P2O5. A convenient source of raw materials is a mixture of coal ash waste, borax (or boric acid) manufacturing plant waste, and titanium pigment waste. The ceramic glass is formed from an intermediate ceramic mixture which is subjected to a heat treatment. The intermediate ceramic mixture is formed by heating a mixture containing SiO2, Al2O3, CaO, MgO, TiO2, B2O3, and Na4P2O7 to a temperature between about 1400 DEG and 1600 DEG C; cooling the mixture to solidify it; annealing the mixture at 600 DEG to 670 DEG C in an atmosphere containing oxygen; and cooling the mixture to a temperature less than about 400 DEG C at a cooling rate less than about 30 DEG C per hour. The intermediate ceramic mixture is first heated to a temperature of between about 850 DEG and 1000 DEG C at a heating rate of between about 1 DEG and 2 DEG C per minute, and then sintered at a temperature between 850 DEG to 1000 DEG C for a time period sufficient to increase its density to at least about 2.1 g/cm .
    • 陶瓷玻璃组合物包含:约35至55重量%的SiO 2; 约18至28重量%的Al 2 O 3; 约1至5重量%的CaO; 约7至14重量%的MgO; 约0.5至5重量%的TiO 2; 约0.4至3重量%的B 2 O 3; 并且大于0且至多约1重量%的P 2 O 5。 原料的方便来源是煤灰废料,硼砂(或硼酸)制造废物和钛颜料废料的混合物。 陶瓷玻璃由经过热处理的中间陶瓷混合物形成。 通过将含有SiO 2,Al 2 O 3,CaO,MgO,TiO 2,B 2 O 3和Na 4 P 2 O 7的混合物加热至约1400℃至1600℃的温度来形成中间陶瓷混合物; 冷却混合物使其固化; 将混合物在含氧气氛中在600〜670℃退火; 并以小于约30℃/小时的冷却速度将混合物冷却至低于约400℃的温度。 首先将中间陶瓷混合物以约1〜2℃/分钟的加热速度加热至约850〜1000℃的温度,然后在850〜1000℃的温度下烧结 足以将其密度增加至至少约2.1g / cm 3的时间。