Rotary kiln is rotary calcine kiln that belongs to building material equipment, which can be divided into cement kiln, metallurgy chemical kiln and lime kiln according to different materials.

• 回转窑也称旋转煅烧窑，属于建材设备。回转窑按处理物料不同可分为水泥窑、冶金化工窑和石灰窑。