Method for making glazed brick
A technology of glazed tiles and preparation steps, which is applied in the field of preparation of building ceramic materials, which can solve the problems of insufficient hardness of the glazed surface layer, restrict the application of floor tiles, and low wear resistance, and achieve low particle surface activity, increase hardness, and overall hardness and strength Improved effect
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Embodiment 1
[0038] Preparation of aluminum hydroxide powder:
[0039] Put 700mL of sodium aluminate solution with a mass fraction of 20% into a plastic tank, and pass carbon dioxide gas into the plastic tank at a rate of 20mL / min for 40min. After the ventilation is completed, let it stand for settling for 3h to obtain a settling mixture. In a flat disc filter, filter and remove the filtrate to obtain a filter residue, place the filter residue in an oven, heat up to 90°C, and dry for 4 hours to obtain aluminum hydroxide powder;
[0040] Preparation of dispersion glue:
[0041] The aluminum hydroxide powder was placed in a high-pressure airflow machine, and the air was pulverized for 10 minutes to obtain aluminum hydroxide ultrafine powder with a particle size of 50 μm. In the sodium solution, a colloidal liquid is obtained, and the colloidal liquid is placed in a high-speed disperser to disperse at a high speed at a rotational speed of 3000 r / min to obtain a dispersed colloidal liquid;
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Embodiment 2
[0051] Preparation of aluminum hydroxide powder:
[0052] Put 750mL of sodium aluminate solution with a mass fraction of 20% into a plastic tank, and pass carbon dioxide gas into the plastic tank at a rate of 25mL / min for 43min. After the ventilation is completed, let it stand for settling for 3h to obtain a settling mixture. In a flat disc filter, filter and remove the filtrate to obtain a filter residue, place the filter residue in an oven, heat up to 95°C, and dry for 4 hours to obtain aluminum hydroxide powder;
[0053] Preparation of dispersion glue:
[0054] The aluminum hydroxide powder was placed in a high-pressure airflow machine, and the air was pulverized for 13 minutes to obtain aluminum hydroxide ultrafine powder with a particle size of 60 μm. In the sodium solution, a colloidal liquid is obtained, and the colloidal liquid is placed in a high-speed disperser to disperse at a high speed at a rotational speed of 3150 r / min to obtain a dispersed colloidal liquid;
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Embodiment 3
[0064] Preparation of aluminum hydroxide powder:
[0065] Put 800 mL of sodium aluminate solution with a mass fraction of 20% into a plastic tank, and pass carbon dioxide gas into the plastic tank at a rate of 30 mL / min for 45 minutes. After the ventilation is completed, let it stand for sedimentation for 4 hours to obtain a sedimentation mixture. In a flat disc filter, filter and remove the filtrate to obtain a filter residue, place the filter residue in an oven, heat up to 100°C, and dry for 5 hours to obtain aluminum hydroxide powder;
[0066] Preparation of dispersion glue:
[0067] The aluminum hydroxide powder was placed in a high-pressure airflow machine, and the air was pulverized for 15 minutes to obtain aluminum hydroxide ultrafine powder with a particle size of 80 μm. In the sodium solution, a colloidal liquid is obtained, and the colloidal liquid is placed in a high-speed disperser to disperse at a high speed at a rotational speed of 3300 r / min to obtain a dispers...
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