▎ 摘　　要

NOVELTY - A foamed lightweight insulation board comprises 40-70 wt.% stone tailings, 0.05-10 wt.% clay, 0.05-15 wt.% graphene, 0.05-10 wt.% calcium carbonate, 0.05-15 wt.% vermiculite, 0.05-15 wt.% high temperature cosolvent, 0.05-5 wt.% expanded graphite, 0.05-5 wt.% stabilizer, 0.05-5 wt.% sizing agent and 0-5 wt.% pigment. USE - Foamed lightweight insulation board. ADVANTAGE - The lightweight insulation board is environmentally-friendly, has high strength, excellent thermal insulation property due to usage of stone tailings as substrate, graphene and vermiculite. The board has improved fire proof property, excellent weather resistance due to the usage of expanded graphite as foaming agent, increased hardness, excellent high temperature resistance and flame retardant properties due to the usage of high-temperature foaming process and segmented insulation for sintering. The board had controlled density and pore distribution, excellent sound proof property, water impermeability, aging resistance and excellent corrosion resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the insulation board.