1. Rotary kiln introduction
Rotary kiln refers to rotary calciner,belongs to building material equipment. It can be divided into cement rotary kiln, metallurgy rotary kiln and lime rotary kiln. Cement rotary kiln is mainly used to calcine cement clinker, it can be divided into dry process and wet process. Metallurgy kiln is mainly used to calcine lean iron ore, bauxite, aluminium hydroxide, chrome ore etc. Lime rotry kiln is used to calcine active lime and light roasting dolomite.
2. Rotary kiln Work principle
Rotary kiln is made of steel plate, and inside the kiln body inserts refractory lining, which keeps specified inclination with horizontal line. Three tires are supported by each supporting device, around the tire at feed end uses tangential spring plate to fix big gear, under which a pinion is meshing with. During normal operation, the rotary kiln is driven by main motor through main reducer to transmit power to open gear.
Material is fed into kiln from kiln tail. Due to the slope and rotation of the cylinder, the material make a composite motion—it rolls in circumferential direction and at the same time moves in axial direction. After sintering process, the material is calcined in cement clinker and discharged into cooler machine through kiln head hood.
Sprayed into the kiln from the kiln head, the fuel burns in the kiln, after exchanging with the material, the generated waste is discharged from kiln tail. The burner in this design is excluding fuel.
