Energy-saving production device for high-temperature calcination of alpha-aluminum oxide

The utility model provides an energy-saving device for producing high-temperature calcined alpha-aluminum oxide, which comprises a calcining barrel, the calcining barrel is provided with a protective layer on the outer side, a heat preservation layer is arranged on the inner side of the protective layer, an outer steel layer is arranged on the inner side of the heat preservation layer, and a hollow layer is arranged on the inner side of the outer steel layer. A steel frame layer is arranged in the hollow layer, an inner steel layer is arranged on the inner side of the steel frame layer, an inner lining layer is arranged on the inner side of the inner steel layer, a coating layer is sprayed to the inner wall of the inner lining layer, a material turning device is arranged on the inner side of the coating layer, and the material turning device comprises a connecting block fixedly connected with the inner lining layer. An inner connecting plate is connected to the end face of the inner side of the connecting blo