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Renewable ceramic filter for continuous casting tundish and preparation method thereof
The invention relates to a renewable ceramic filter for continuous casting tundish and a preparation method thereof. According to the technical scheme, 40 to 60wt% of the calcium carbonate particles, 15 to 30wt% of corundum particles and 1 to 5wt% of pre-melting '12:7'calcium aluminate particles serve as aggregate, 10 to 15wt% of monocalcium aluminate fine powder, 4 to 10wt% of calcium dialuminate fine powder and 4 to 6wt% of pre-melting '12:7'calcium aluminate fine powder serve as substrate, and organic fiber accounting for 0.04 to 0.10wt% of the sum of the aggregate and the substrate and polycarboxylate superplasticizer accounting for 0.08 to 0.15wt% thereof as admixture. The method includes: grind-mixing evenly the binding agent and the substrate according to the content mentioned above, and adding the aggregate to grind-mix so as to obtain a mixed material; adding water accounting for 4 to 6wt% of the sum of the aggregate and the substrate, performing evenly mixing, forming, curing, demolding and drying, and holding the temperature at 1200 to 1700 DEG C for 0.5 to 6 hours to obtain the renewable ceramic filter for the continuous casting tundish. The renewable ceramic filter has the advantages of wide range of purified particle size, high efficiency, little possibility of plugging, erosion resistance and long service life.
Renewable ceramic filter for continuous casting tundish and preparation method thereof
The invention relates to a renewable ceramic filter for continuous casting tundish and a preparation method thereof. According to the technical scheme, 40 to 60wt% of the calcium carbonate particles, 15 to 30wt% of corundum particles and 1 to 5wt% of pre-melting '12:7'calcium aluminate particles serve as aggregate, 10 to 15wt% of monocalcium aluminate fine powder, 4 to 10wt% of calcium dialuminate fine powder and 4 to 6wt% of pre-melting '12:7'calcium aluminate fine powder serve as substrate, and organic fiber accounting for 0.04 to 0.10wt% of the sum of the aggregate and the substrate and polycarboxylate superplasticizer accounting for 0.08 to 0.15wt% thereof as admixture. The method includes: grind-mixing evenly the binding agent and the substrate according to the content mentioned above, and adding the aggregate to grind-mix so as to obtain a mixed material; adding water accounting for 4 to 6wt% of the sum of the aggregate and the substrate, performing evenly mixing, forming, curing, demolding and drying, and holding the temperature at 1200 to 1700 DEG C for 0.5 to 6 hours to obtain the renewable ceramic filter for the continuous casting tundish. The renewable ceramic filter has the advantages of wide range of purified particle size, high efficiency, little possibility of plugging, erosion resistance and long service life.
Renewable ceramic filter for continuous casting tundish and preparation method thereof
HUANG AO (author) / GU HUAZHI (author) / FU LYUPING (author) / LIU XING (author) / XIONG MINGJI (author) / GUO CHENGCHENG (author)
2015-09-23
Patent
Electronic Resource
English
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