Brief introduction

Rotary kiln is rotary calcining kiln and one of building material equipments. According to dealing with different materials, there are cement kiln, matallurgy chemical kiln and lime kiln.

Rotary kiln is the key equipment of cement clinker in dry-process and wet-process production line. Metallurgy chemical kiln is mainly used in iron ore magnetic calcination, silicon thermal refining magnesium, chromium nickel ore calcination, refractory calcination and active lime and calcined dolomite for steel mill and ferroalloy works.

Working Principle                                                                                      

Mined limestone is delivered to the crusher for crushing by the belt conveyor, limestone after crushing ,clay, iron powder etc will be ground into powder by ball mill or vertical mill, and then transported by air delivery chute to raw meal homogenization silo for storing and further material mix. Raw meal shall get into the preheating decomposition system after homogenization where decomposition rate is about 95%, and raw meal is calcined into clinker in the rotary kiln, the formation of clinker. Clinker, gypsum and mixture is ground into qualified fineness cement in the cement mill. Powder classifier is adopted to adjust the fineness of cement, realizing energy saving production. Cement packing machine and automatic loading machine are used for bagged cement delivery, and cement bulk device for cement canning leaving factory.

 

Supporting device: advanced shaft structure, automatic temperature measuring device and electrical heating.

Catch wheel: including two kinds mechanical wheel and hydraulic pressure.

Gears: single or double. Control the rotating speed by buncher, DE machine and frequency variable motor. Be reliable, energy-saving, and efficient.

Cylinder type bolster: lower bolster has three types: fixed, zoom and floating. The structure is simple, replacement is convenient and won’t hurt cylinder.

Sealing equipment: there are many kinds for choice according to kiln models, including air cylinder edge sealing, spring edge sealing, and graphite block sealing and combination for above. The sealing effect is very good.

Kiln head hood: including stationary type and flexible type.