Foaming stone insulation board and preparation method thereof

Abstract

The invention discloses a foaming stone insulation board and a preparation method thereof, wherein the insulation board comprises the following components in percentage by weight: 90%-97% of feldspar, 2%-8% of mineralizer and 0.4%-2% of foaming agent. The preparation method comprises the following steps: firstly, mixing and grinding materials; then adopting a silicon carbide material for manufacturing a box body saggar; coating a clay anti-cohesion layer on the inner surface of the saggar; putting the mixed materials into the saggar and foaming and sintering the mixed materials in a tunnel kiln, wherein the sintering and foaming temperature is 1200-1250 DEG C; slowly cooling the mixed materials to obtain large blocky foaming stones; and cutting and processing the foaming stones into various blocky foaming stones. The foaming stone insulation board of the invention has the chemical composition and superior properties of the feldspar, the volume density is less than that of a light-weight insulating brick, the mechanical strength is higher than that of the light-weight insulating brick, the heat-insulating property is better than that of the light-weight insulating brick, the usage temperature is higher than that of foaming glass and foaming ceramics, and the foaming stone insulation board can be used for insulation of an outer layer of high-temperature equipment such as high-temperature kiln and the like, and can obviously improve the insulation effect.

Description

technical field [0001] The invention relates to a thermal insulation material and a preparation method thereof, in particular to a foam stone insulation board and a preparation method thereof. Background technique [0002] High-temperature kiln is a device made of refractory materials for calcining materials or firing products; whether its structure is reasonable and the selection is correct is directly related to the quality of products, the level of output and energy consumption, etc. key equipment in. At present, the insulation of high-temperature equipment (kiln) mainly uses lightweight insulation bricks. The inner layer has a high temperature and uses lightweight high-alumina bricks, and the outer layer uses lightweight clay bricks. Because these insulation bricks have air permeability, their insulation effect is affected; The outer layer of some kilns is sealed with iron plates, the temperature of the outer iron plates is still high, and the heat preservation effect i...

AI Technical Summary

Problems solved by technology

At present, the insulation of high-temperature equipment (kiln) mainly uses lightweight insulation bricks. The inner layer has a high temperature and uses lightweight high-alumina bricks, and the outer layer uses lightweight clay bricks. Because these insulation bricks have air permeability, their insulation effect is affected; The outer layer of some kilns is sealed with iron plates, the temperature of the outer iron plates is still high, and the heat preservation effect is poor