Energy-saving phase-change-preventing combined pyrophyllite composite block

The utility model discloses an energy-saving anti-phase change combined pyrophyllite composite block, which comprises a combined composite block and a material unit, the combined composite block comprises a pyrophyllite special-shaped shell and a dolomite special-shaped lining pipe, and the dolomite special-shaped lining pipe is arranged in an inner cavity of the pyrophyllite special-shaped shell. According to the utility model, the pyrophyllite special-shaped shell and the dolomite special-shaped lining pipe are combined to obtain the combined type composite block, so that the thin-wall position of the high-temperature area of the inner cavity of the combined type composite block is completely replaced by the dolomite special-shaped lining pipe during later processing, and the damage to the holding-up hammer caused by phase change permeation of the original pyrophyllite special-shaped shell can be avoided; the pyrophyllite composite block solves the problems that when a traditional pyrophyllite composite blo