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 tundish. The refractory material comprises the following raw materials by weight: 2 to 3 parts of asbolite, 0.1 to 0.17 part of hexamethyl cyclotrisiloxane, 2 to 3 parts of paper fiber, 0.1 to 0.2 part of phthalate, 30 to 37 parts of fast extruding furnace black, 6 to 10 parts of magnesium nitride, 1 to 2 parts of borax, 10 to 13 parts of linen fiber, 2 to 3 parts of glacial acetate acid, 26 to 30 parts of ethyl orthosilicate, 80 to 102 parts of ammonia water with a concentration of 6 to 10%, 100 to 110 parts of hydrogen peroxide with a concentration of 3 to 5%, 4 to 7 parts of terpene resin, 30 to 40 parts of forsterite powder and 1 to 2 parts of polyvinyl butyral. According to the invention, ethyl orthosilicate is hydrolyzed into silanol sol under the condition of addition of the catalyst glacial acetate acid; the silanol sol is mixed with a fiber activating solution, and a solvent is evaporated so as to obtain a heterocomplex of carbon and silicon; and finally, high temperature carbonization is carried out, and the fiber activating solution provides a carbon source, so a carbon-silicon composite auxiliary agent is obtained. The carbon-silicon composite auxiliary agent has the advantages of stable chemical performance, a high heat conduction coefficient, a small thermal expansion coefficient, heat resistance, light weight and high strength.
The invention discloses a refractory material for tundish. The refractory material comprises the following raw materials by weight: 2 to 3 parts of asbolite, 0.1 to 0.17 part of hexamethyl cyclotrisiloxane, 2 to 3 parts of paper fiber, 0.1 to 0.2 part of phthalate, 30 to 37 parts of fast extruding furnace black, 6 to 10 parts of magnesium nitride, 1 to 2 parts of borax, 10 to 13 parts of linen fiber, 2 to 3 parts of glacial acetate acid, 26 to 30 parts of ethyl orthosilicate, 80 to 102 parts of ammonia water with a concentration of 6 to 10%, 100 to 110 parts of hydrogen peroxide with a concentration of 3 to 5%, 4 to 7 parts of terpene resin, 30 to 40 parts of forsterite powder and 1 to 2 parts of polyvinyl butyral. According to the invention, ethyl orthosilicate is hydrolyzed into silanol sol under the condition of addition of the catalyst glacial acetate acid; the silanol sol is mixed with a fiber activating solution, and a solvent is evaporated so as to obtain a heterocomplex of carbon and silicon; and finally, high temperature carbonization is carried out, and the fiber activating solution provides a carbon source, so a carbon-silicon composite auxiliary agent is obtained. The carbon-silicon composite auxiliary agent has the advantages of stable chemical performance, a high heat conduction coefficient, a small thermal expansion coefficient, heat resistance, light weight and high strength.
| European Patent Office | 2022
LINING REFRACTORY MATERIAL FOR CONTINUOUS CASTING TUNDISH
| European Patent Office | 2018