A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a refractory material for a direct current electric arc furnace bottom. The refractory material is composed of the following raw materials by weight part: 6-10 of steel powder, 3-4 of terpene resin, 2-3 of phenolic resin, 17-20 of zirconium boride, 30-40 of zinc powder, 60-67 of graphite in soil form, 10-14 of flax fiber, 2-3 of glacial acetic acid, 26-30 of tetraethyl orthosilicate, 80-102 of 6-10% ammonia water, 100-110 of 3-5% hydrogen peroxide, 2-3 of potassium borohydride, 3-4 of scolecite, 0.1-0.13 of trimethylolpropane, and 3-4 of dimethyl carbonate. The tetraethyl orthosilicate involved in the invention is hydrolyzed into silanol sol under the condition of adding the catalyst glacial acetic acid, the silanol sol is mixed with a fiber activation solution and an ultrasonic dispersion solution prepared from scolecite, by evaporation of the solvent, a heterocomplex containing calcium, carbon and silicon can be obtained, and finally high temperature carbonization is carried out, and the carbon source is provided by the fiber activation solution, thus obtaining a carbon silicon calcium composite additive. The carbon silicon calcium composite additive has the advantages of stable chemical properties, high heat conductivity coefficient, small thermal expansion coefficient, thermal shock resistance, light weight, and high strength.
The invention discloses a refractory material for a direct current electric arc furnace bottom. The refractory material is composed of the following raw materials by weight part: 6-10 of steel powder, 3-4 of terpene resin, 2-3 of phenolic resin, 17-20 of zirconium boride, 30-40 of zinc powder, 60-67 of graphite in soil form, 10-14 of flax fiber, 2-3 of glacial acetic acid, 26-30 of tetraethyl orthosilicate, 80-102 of 6-10% ammonia water, 100-110 of 3-5% hydrogen peroxide, 2-3 of potassium borohydride, 3-4 of scolecite, 0.1-0.13 of trimethylolpropane, and 3-4 of dimethyl carbonate. The tetraethyl orthosilicate involved in the invention is hydrolyzed into silanol sol under the condition of adding the catalyst glacial acetic acid, the silanol sol is mixed with a fiber activation solution and an ultrasonic dispersion solution prepared from scolecite, by evaporation of the solvent, a heterocomplex containing calcium, carbon and silicon can be obtained, and finally high temperature carbonization is carried out, and the carbon source is provided by the fiber activation solution, thus obtaining a carbon silicon calcium composite additive. The carbon silicon calcium composite additive has the advantages of stable chemical properties, high heat conductivity coefficient, small thermal expansion coefficient, thermal shock resistance, light weight, and high strength.
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| European Patent Office | 2015
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