Renewable ceramic filter for continuous casting tundish and preparation method thereof
A ceramic filter and continuous casting technology, which is applied in the direction of casting equipment, casting melt containers, manufacturing tools, etc., can solve the problems of inability to reuse, failure, difficulty in making and using filters, etc., and achieve corrosion resistance and heat resistance Excellent vibration performance, wide particle size range, and the effect of improving cleanliness
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Embodiment 1
[0031] A renewable ceramic filter for continuous casting tundish and a preparation method thereof. With 40-45wt% calcium carbonate particles, 26-30wt% corundum particles and 3-5wt% pre-melted dodecacalcium heptaaluminate particles as aggregates, 10-13wt% monocalcium aluminate fine powder, 6 ~10wt% calcium dialuminate fine powder and 5~6wt% pre-melted calcium heptaaluminate dodecaaluminate fine powder are used as matrix, with 0.04~0.10wt% organic fiber and 0.08~ 0.15wt% polycarboxylic acid dispersion water reducer is an admixture. According to the above content, the binder and the matrix are uniformly mixed and ground, and then aggregates are added and mixed to obtain a mixture. Then add water accounting for 4-6 wt% of the sum of the aggregate and the matrix to the mixture, stir evenly, cast and vibrate to form, maintain at room temperature for 12-48 hours, and demould. Finally, it is dried at 110-200°C for 12-36 hours, and kept at 1200-1700°C for 0.5-6 hours to obtain a rene...
Embodiment 2
[0036]A renewable ceramic filter for continuous casting tundish and a preparation method thereof. With 45-50wt% calcium carbonate particles, 22-26wt% corundum particles and 3-5wt% pre-melted heptaaluminate dodecaaluminate particles as aggregates, 10-13wt% monocalcium aluminate fine powder, 6 ~10wt% calcium dialuminate fine powder and 5~6wt% pre-melted calcium heptaaluminate dodecaaluminate fine powder are used as matrix, with 0.04~0.10wt% organic fiber and 0.08~ 0.15wt% polycarboxylic acid dispersion water reducer is an admixture. According to the above content, the binder and the matrix are uniformly mixed and ground, and then aggregates are added and mixed to obtain a mixture. Then add water accounting for 4-6 wt% of the sum of the aggregate and the matrix to the mixture, stir evenly, cast and vibrate to form, maintain at room temperature for 12-48 hours, and demould. Finally, it is dried at 110-200°C for 12-36 hours, and kept at 1200-1700°C for 0.5-6 hours to obtain a ren...
Embodiment 3
[0041] A renewable ceramic filter for continuous casting tundish and a preparation method thereof. With 50-55wt% calcium carbonate particles, 18-22wt% corundum particles and 1-3wt% pre-melted dodecaaluminate heptaaluminate particles as aggregates, 12-15wt% monocalcium aluminate fine powder, 4 ~7wt% calcium dialuminate fine powder and 4~5wt% pre-melted calcium heptaaluminate dodecaaluminate fine powder are used as matrix, with 0.04~0.10wt% organic fiber and 0.08~ 0.15wt% polycarboxylic acid dispersion water reducer is an admixture. According to the above content, the binder and the matrix are uniformly mixed and ground, and then aggregates are added and mixed to obtain a mixture. Then add water accounting for 4-6 wt% of the sum of the aggregate and the matrix to the mixture, stir evenly, cast and vibrate to form, maintain at room temperature for 12-48 hours, and demould. Finally, it is dried at 110-200°C for 12-36 hours, and kept at 1200-1700°C for 0.5-6 hours to obtain a ren...
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