Rotary kiln having segmented temperature control capability

A rotary kiln capable of segmented temperature control, the rotary kiln comprising a kiln body, a kiln head cover, a kiln tail cover and a bottom base, wherein a drive device is disposed between the bottom base and the kiln body, the rotary kiln further comprising a first fuel supply pipe having a supply segment, a connecting segment and a rotating segment, wherein the supply segment is fixedly disposed on an outer side wall of the kiln body, the rotating segment is disposed coaxially with the kiln body and is connected to a fuel supply source through a rotatory joint, and the supply segment communicates with the rotating segment through the connecting segment;

• multiple groups of combustion components are disposed on the outer side wall of the kiln body, and a fuel inlet of each of the combustion components is connected to the supply segment of the first fuel supply pipe through a branch pipe.