Long-life rotary kiln

Abstract

The invention discloses a long-life rotary kiln. The long-life rotary kiln comprises a rotary kiln body, the outer portion of the rotary kiln body is detachably sleeved with a cooling layer, a metal copper heat-conducting fin is arranged between the cooling layer and the rotary kiln body, an air cooling mechanism is arranged outside the rotary kiln body, and the air cooling mechanism comprises a fan, an air storage pipe arranged at an air outlet of the fan and at least three air outlet nozzles arranged on the air storage pipe and used for discharging cooling air. According to the long-service-life rotary kiln, the rotary kiln body is sleeved with the cooling layer, heat on the outer surface of the rotary kiln body can be transferred to the cooling layer for cooling through the metal copper heat-conducting fin, meanwhile, the air cooling mechanism starts to work, the purpose of further cooling the cooling layer can be achieved, and the situation that the temperature of the cooling layer is too high due to the fact that the cooling layer absorbs too much heat of the rotary kiln body, and consequently the cooling performance of the rotary kiln body is affected can be avoided.

Description

technical field [0001] The invention belongs to the field of cement production equipment, and in particular relates to a long-life rotary kiln. Background technique [0002] The rotary kiln is a large heavy-duty equipment used for high-temperature calcination or baking. Its internal temperature is generally 800-1700°C. Therefore, it is necessary to build high-temperature resistant protective materials inside the rotary kiln, that is, the kiln lining, to prevent high-temperature flames from directly invading the rotary kiln barrel. body, to avoid the resulting decline in the bearing capacity of the rotary kiln. The kiln lining built inside the rotary kiln will either fall off when it expands with heat and contracts with cold, or its thickness will become thinner due to wear and tear, which will affect the thermal insulation effect. Therefore, it is necessary to monitor the temperature of the surface of the rotary kiln in real time. In order to prevent the phenomenon that the...

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Problems solved by technology

[0010] In view of this, the purpose of the present invention is to provide a long-life rotary kiln to solve the problem of poor cooling effect of traditional cooling methods when the prior art rotary kiln is in use

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