The application discloses a
rotary kiln composite lining structure and belongs to the technical field of thermal equipment. The
rotary kiln composite lining is designed by a structure of a working layer, a functional layer and an anchoring structure, integrates the concepts of mechanical reinforcement and energy-saving protection, and can realize good
structural stability and heat insulation performance. Through efficient reflection of
radiant heat by a reflection layer, cooperative heat conduction blocking of a heat preservation layer and a heat
insulation layer, resistance to
corrosion and stress buffering of a
protection layer, and anti-abrasion and high-temperature
corrosion resistance of the working layer, a hierarchical heat
protection system is formed. In combination with a quasi-flexible connection
system in the anchoring structure, the
rotary kiln thermal expansion stress and
shear stress in the rotating process can be reduced under the premise of ensuring the connection strength, and the overall stability of the structural layer is improved. The rotary
kiln composite lining provided by the application has
mechanical strength and heat insulation performance, can obtain a relatively long service life, and realizes efficient energy saving of the rotary
kiln.