The rotary kiln high temperature calcined alumina production line built by our company was officially put into production in Hubei. The equipment is a rotary kiln equipment specially developed for the calcination of alumina. It uses industrial aluminum hydroxide and industrial alumina as raw materials and calcines them at high temperature in the rotary kiln into α-type alumina products with stable crystal form. The whole production line is reasonably designed and has the advantages of simple operation, reliability, and stable process.