Method for preparing mullite porous ceramic by alumina fiber reinforced opoka
An alumina fiber and porous ceramic technology, applied in the field of inorganic ceramic materials, can solve the problems of low strength and high porosity, and achieve the effects of high porosity, good adsorption and low production cost
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Embodiment 1
[0022] A method for preparing mullite porous ceramics from alumina fiber reinforced protein clay, comprising the following steps:
[0023] (1) According to the weight ratio of modified protein soil, aluminum hydroxide, ρ-alumina, alumina fiber and sintering aid is 3:4:0.9:0.1:0.1, put the raw materials into the agate ball mill jar, and use a planetary ball mill Ball mill at 300rpm for 3h to obtain a uniformly mixed powder;
[0024] (2) mixing the uniform powder with water to prepare a ceramic slurry with a solid content of 55%;
[0025] (3) Pour the prepared ceramic slurry into a mold of a certain shape quickly and cast it into a mold, and vacuum degassing to remove the air bubbles in the slurry, and then place the sample at room temperature to dry for 48 hours to obtain a ceramic green body;
[0026] (4) Sinter the ceramic green body, cool it, slowly raise the temperature to 300°C at a rate of 1°C / min, then raise the temperature to 800°C at 2°C / min, raise the temperature to ...
Embodiment 2
[0030] A method for preparing mullite porous ceramics from alumina fiber reinforced protein clay, comprising the following steps:
[0031] (1) According to the weight ratio of modified protein soil, aluminum hydroxide, ρ-alumina, alumina fiber and sintering aid is 3:4:0.9:0.1:0.1, put the raw materials into the agate ball mill jar, and use a planetary ball mill Ball mill at 300rpm for 3h to obtain a uniformly mixed powder;
[0032] (2) mixing the uniform powder with water to prepare a ceramic slurry with a solid content of 55%;
[0033] (3) Pour the prepared ceramic slurry into a mold of a certain shape quickly and cast it into a mold, and vacuum degassing to remove the air bubbles in the slurry, and then place the sample at room temperature to dry for 48 hours to obtain a ceramic green body;
[0034] (4) Sinter the ceramic green body, cool it, slowly raise the temperature to 300°C at a rate of 1°C / min, then raise the temperature to 800°C at 2°C / min, raise the temperature to ...
Embodiment 3
[0038] A method for preparing mullite porous ceramics from alumina fiber reinforced protein clay, comprising the following steps:
[0039] (1) According to the weight ratio of modified protein soil, aluminum hydroxide, ρ-alumina, alumina fiber and sintering aid is 3:4:0.9:0.1:0.1, put the raw materials into the agate ball mill jar, and use a planetary ball mill Ball mill at 300rpm for 3h to obtain a uniformly mixed powder;
[0040] (2) mixing the uniform powder with water to prepare a ceramic slurry with a solid content of 55%;
[0041] (3) Pour the prepared ceramic slurry into a mold of a certain shape quickly and cast it into a mold, and vacuum degassing to remove the air bubbles in the slurry, and then place the sample at room temperature to dry for 48 hours to obtain a ceramic green body;
[0042] (4) Sinter the ceramic green body, cool it, slowly raise the temperature to 300°C at a rate of 1°C / min, then raise the temperature to 800°C at 2°C / min, raise the temperature to ...
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