▎ 摘　　要

NOVELTY - Sintering molding process of refractory material, involves using matrix comprising magnesium oxide, silicon carbide, boron carbide, and aluminum nitride or silicon nitride, aggregate comprising alkali-resistant clay, calcined bauxite and cordierite, lightweight filler comprising perlite, vermiculite and foamed alumina, and binding agent comprising component (A) comprising phenolic resin modified by carbon material and component (B) comprising calcium silicate cement, polyvinyl alcohol, ethylene glycol, sodium lignosulfonate and water, mixing matrix, aggregates and lightweight filler to prepare dry refractory material, mixing component (B) in binder to prepare slurry, mixing dry refractory material and slurry, stirring, adding component (A) in binder, stirring raw materials in mold, pressing into green refractory material, placing formed refractory material green body in furnace for heat treatment, performing three-stage heat treatment, and naturally cooling to obtain finished product. USE - Sintering molding process of refractory material. ADVANTAGE - The refractory material has excellent thermal shock performance, compactness and stable crack propagation, so that the compactness and thermal shock performance of the product are improved, and has improved mechanical property. DETAILED DESCRIPTION - Sintering molding process of refractory material, involves using matrix comprising 30-35 pts. wt. magnesium oxide, 10-17 pts. wt. silicon carbide, 3-7 pts. wt. boron carbide, and 1-3 pts. wt. aluminum nitride or silicon nitride, where all components in the matrix are particles with a particle size of less than 1 mm, aggregate comprising 75-90 pts. wt. alkali-resistant clay, 10-15 pts. wt. calcined bauxite and 7-9 pts. wt. cordierite, where the alkali-resistant clay is alkali-resistant clay with an aluminum oxide content of 25-30%, the cordierite is crushed into powder and sieved for classification, the aggregate comprises 30-40% particles with a particle size of 1-3 mm, 40-50% particles with a particle size of 0.1-1 mm and remaining of particles with a particle size of less than 0.1 mm and the particles of different sizes are uniformly distributed in the alkali-resistant clay, calcined bauxite and cordierite, lightweight filler comprising 40-60 pts. wt. perlite, 20-40 pts. wt. vermiculite and 15-25 pts. wt. foamed alumina, where each raw material in the light filler is particulate matter with a particle size of 1-3 mm, and binding agent comprising component (A) comprising 20-30 pts. wt. phenolic resin modified by carbon material and component (B) comprising 10-15 pts. wt. calcium silicate cement, 9-10 pts. wt. polyvinyl alcohol, 3-5 pts. wt. ethylene glycol, 3-5 pts. wt. sodium lignosulfonate and 30-50 pts. wt. water, where the carbon material used for phenolic resin modification comprises graphene, nano-carbon black and/or carbon nanotubes, the carbon material is added to the phenolic resin for ultrasonic assisted dispersion for 90-120 minutes to obtain a carbon material-modified phenolic resin, and the addition amount of the carbon material in the phenolic resin is 0.3-0.5%, mixing 20-30 %mass matrix, 30-40 %mass aggregates and remaining of lightweight filler to prepare a dry refractory material, mixing the component (B) in the binder to prepare a slurry, mixing the dry refractory material and the slurry at a mass ratio of 6:1-8:1, stirring for 60-90 minutes, adding the component (A) in the binder, stirring the raw materials in a mold for 20-30 minutes, pressing into a green refractory material, placing the formed refractory material green body in a furnace for heat treatment, performing a three-stage heat treatment, where the temperature in the low temperature zone is controlled at 120-200 degrees C at a heating rate of 30 degrees C/hour and the heat preservation is carried out for 30-50 minutes, the temperature in the middle temperature zone is controlled at 450-600 degrees C at a heating rate of 50 degrees C/hour and heat preservation is carried out for 90-120 minutes, and the temperature in the high temperature zone is controlled at 1200-1650 degrees C at a heating rate of 80 degrees C/hour and heat preservation is carried out for 3-5 hours, and naturally cooling the furnace to room temperature to obtain the finished product.