Expanded vitrified micro-bead fireproof thermal-insulation board and preparation method thereof

The invention relates to an expanded vitrified micro-bead fireproof thermal-insulation board and a preparation method thereof, belonging to the field of construction materials. In the invention, inorganic expanded vitrified micro-beads, which are used as main raw materials, are combined with an organic binder, molded in a die and sintered, so that the expanded vitrified micro-beads are bound to form a compact single-layer board; and meanwhile, in the sintering process, the content of organic matters in the thermal-insulation board is greatly reduced to further enhance the fire resistance of the fireproof thermal-insulation board, thereby obtaining the fireproof thermal-insulation board with favorable comprehensive properties. The preparation technique of the expanded vitrified micro-bead fireproof thermal-insulation board is simple; and the expanded vitrified micro-bead fireproof thermal-insulation board has the advantages of low coefficient of thermal conductivity, high strength, excellent fire resistance, low water absorptivity, favorable thermal insulation effect, long service life and low volume weight, and can not deform or deteriorate when being used for a long time, therebybeing a green, economical and environment-friendly fireproof thermal-insulation material.