It is aluminum silicate glass hollow bead selected from the fly ash of the thermal power plant.
It is light and hollow. The wall is thin and the surface is smooth. It is resistant to high temperature and has good heat-insulating performance. This thermal insulation refractory material with good thermal insulation performance is made on the basis of these characteristics of the floating beads. It has high mechanical strength, low heat conductivity and can save energy and reduce the temperature. The effect of energy saving is especially obvious in the kiln with intermittent operation.