Lightweight castable has light volume, high compressive strength, acid and acid gas corrosion resistance.Low heat insulation, heat preservation, water absorption rate features, simple construction, is the most ideal construction of alkali resistant parts under high temperature.Good workability, adhesive power is strong, the initial setting time and construction operation time is long, fast growth strength, permeability resistance is strong, do not need to acidification treatment, easy to ensure the masonry mortar joint dense full, can significantly increase the tightness of chimney lining wall, integrity and lined with corrosion resistant ability, high chimney, and the high temperature flue duct lining ideal cementing materials, also can be used in petroleum, chemical industry, non-ferrous metallurgical industry such as acid pool, slot acid engineering, etc.