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 blast furnace tapholes, which is prepared from the following raw materials in parts by weight: 0.3-1 part of calcium fluoride, 0.2-0.4 part of ethylene glycol monoethyl ether, 60-70 parts of high bauxite, 4-5 parts of phosphoric acid, 20-31 parts of aluminum silicate, 1-1.5 parts of natural rubber, 4-7 parts of terpene resin, 0.1-0.2 part of trithiocyanuric acid, 10-16 parts of flax fiber, 2-3 parts of glacial acetic acid, 26-30 parts of ethyl orthosilicate, 80-102 parts of 6-10% ammonia water, 100-110 parts of 3-5% oxydol and 1-2 parts of calcium stearate. The method comprises the following steps: hydrolyzing the ethyl orthosilicate into a silanol sol by using the glacial acetic acid as a catalyst, mixing the silanol sol and a fiber activation solution, evaporating the solvent to obtain a carbon-silicon-containing heterocomplex, and carrying out high-temperature carbonization by providing a carbon source with the fiber activation solution to obtain the carbon-silicon composite assistant. The carbon-silicon-calcium composite assistant has the advantages of stable chemical properties, high heat conductivity coefficient, small thermal expansion coefficient, heat shock resistance, light weight and high strength.
The invention discloses a refractory material for blast furnace tapholes, which is prepared from the following raw materials in parts by weight: 0.3-1 part of calcium fluoride, 0.2-0.4 part of ethylene glycol monoethyl ether, 60-70 parts of high bauxite, 4-5 parts of phosphoric acid, 20-31 parts of aluminum silicate, 1-1.5 parts of natural rubber, 4-7 parts of terpene resin, 0.1-0.2 part of trithiocyanuric acid, 10-16 parts of flax fiber, 2-3 parts of glacial acetic acid, 26-30 parts of ethyl orthosilicate, 80-102 parts of 6-10% ammonia water, 100-110 parts of 3-5% oxydol and 1-2 parts of calcium stearate. The method comprises the following steps: hydrolyzing the ethyl orthosilicate into a silanol sol by using the glacial acetic acid as a catalyst, mixing the silanol sol and a fiber activation solution, evaporating the solvent to obtain a carbon-silicon-containing heterocomplex, and carrying out high-temperature carbonization by providing a carbon source with the fiber activation solution to obtain the carbon-silicon composite assistant. The carbon-silicon-calcium composite assistant has the advantages of stable chemical properties, high heat conductivity coefficient, small thermal expansion coefficient, heat shock resistance, light weight and high strength.
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