Lime rotary kiln is a key equipment of lime calcination production process. It hasthe characteristics of wide combustion space and thermal field, which can fullyburn the fuel, and has a uniform temperature field as a heat exchange device,which can meet the requirements of limestone calcination. And as a reactor canmeet the heat, temperature and time requirements of lime formation.
Lime rotary kiln is a vertical preheater rotary kiln. The kiln cylinder is made ofhigh-quality carbon steel plate and the cylinder is on the wheel supportdevice. A large gear ring is fixed in the transmission part of the cylinder,and the cylinder rotation is realized by the frequency conversion speedregulating motor driving the reducer, the pinion gear, and the large gear ring.
The limestone is preheated by the high-temperature flue gas of the preheater andenters the rotary kiln body through the transfer chute. The fuel is injectedinto the kiln body from the kiln head by the burner for combustion. Due to theinclination and slow rotation of the rotary kiln cylinder, the material rollsalong the cylinder and moves toward the lower end of the kiln head. Afterfurther preheating, decomposition, high temperature firing and other processesin the kiln, it is calcined into quicklime, and then enters the vertical coolerfrom the lower part of the kiln head discharge device.
The lime rotary kiln is mainly composed of a transmission device, a supportingdevice of supporting roller, supporting device of catch wheel, cylinder, kilnhead, kiln tail and a sealing device.
Supporting device: The supporting deviceplays a supporting role on the cylinder. There is a certain gap between thewheel belt and the cylinder pad to ensure that the belt is tightly clamped onthe cylinder after thermal expansion. During maintenance, the plate can bepulled out and replaced with a new pad, which is convenient for maintenance andsimple in operation.
Transmissiondevice: The transmission system adopts frequency conversion speed regulationmotor, and the speed regulation range is large, so as to increase capacity. Theauxiliary transmission mechanism is composed of an oil extractor and a reducer,etc.,The cylinder body of the rotary kiln can be operatednormally in the case of power failure, to prevent the cylinder body from beingdeformed under the condition of sudden power failure, and is beneficial to therepair and maintenance of the rotary kiln.
Sealingdevice: heat-resistant steel and heat-resistant steel flakes are used forsealing to reduce the air leakage of the kiln head and kiln tail.In order to ensure the sealing effect, the scales should be regularlyinspected for wear, adjusted and replaced in time to ensure that the scales andcylinder friction ring are tightly fitted.
Cylinderkiln head guard: The cylinder kiln head is made of heat-resistant cast iron,which can withstand high temperature around 800 ℃, with strongheat resistance and long service life.
HenanZhengzhou Mining Machinery Co., Ltd. Is professional lime rotary kilnmanufacturers. It has the characteristics of mature technology, advancedperformance, long service life, simple and convenient operation andmaintenance, high production efficiency, and low operating cost. Welcomecustomer consulting and visiting.
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