Disclosed is an inorganic heat-insulation fireproof plate, namely a silica bead fireproof heat-insulation plate. The fireproof plate is made of vitrified small balls and
xonotlite, the weight ratio of the vitrified small balls to the
xonotlite ranges from 1:2 to 1:5, in addition, waterproof materials with the weight
ranging from 1% to 5% of the total weight of the fireproof plate and gel materials with the weight
ranging from 8% to 10% of the total weight of the fireproof plate are added, and the fireproof plate is manufactured via working procedures including preparation, screening, pressure forming and
drying. The vitrified small balls replace traditional common expanded
perlite and traditional common polyphenyl particles to be used as lightweight aggregates of dry mixed heat-insulation
mortar, shortcomings that the expanded
perlite is high in water absorption and easy in pulverization and is high in
volumetric shrinkage during
slurry stirring, accordingly, low long-term strength, hollowing and
cracking of a product are caused easily, and the like are overcome, defects of flammability, poor fireproof performance, harmful gas generation at a high temperature, low
ageing resistance and weather fastness, high rebounding during construction and the like of the polyphenyl particles are also overcome, and comprehensive performances and construction property of the heat-insulation
mortar are improved. In addition, the hydrophobic vitrified small balls cannot be degraded at a high temperature and are not easy to deform, and the
flame retardant property of a
polymer can be improved when the vitrified small balls are used as
filling materials of the
polymer.