The invention discloses an inner liner material for an industrial
kiln furnace. The inner liner material comprises a base body and a high-
emissivity coating, wherein the base body is a prefabricated element with a semi-sealed cavity and is formed through adding 10 percent of explosion-proof
fiber into high-temperature fire-resistance materials, carrying out sufficient stirring and carrying out
sintering or
casting. The explosion-proof
fiber starts to soften, contract and melt after reaching a certain temperature in the
sintering process along with the prefabricated element, finally, a plurality of irregular
micro holes are formed,
antioxidant and
sintering agents are brushed and coated on the inner wall of the semi-sealed cavity of the prefabricated element, then, bonding agents are coated, next, the high-
emissivity coating with the thickness being 0.2 to 2mm is sprayed and coated, natural
drying in the shade is carried out at
room temperature, finally, high-temperature heating solidification is carried out, the heating speed is 10 DEG C / min, the sintering is completed after heat insulation for 5 hours at 1300 DEG C, and
black body sources are formed. The inner liner material has the advantages that the heat storage function is strong, the
radiance is high, the
heat transfer area of a furnace
hearth can be greatly increased, the furnace liner inner wall blackness and the
irradiance can also be improved, the temperature uniformity of the furnace
hearth is improved, and the service life of the furnace is prolonged.