Carbon calcinations rotary kiln secondary wind pipe installation structure and installation method

Abstract

The invention relates to a carbon calcinations rotary kiln in the production field of an aluminum anode, in particular to a carbon calcinations rotary kiln secondary wind pipe installation structure and installation method. The carbon calcinations rotary kiln secondary wind pipe installation structure comprises a rotary kiln cylinder body and a kiln liner, and is characterized in that: the rotarykiln cylinder body and the kiln liner are respectively provided with an installation hole, a secondary wind pipe with a fire-resisting pouring material protection layer is arranged inside the installation hole, a sealing sleeve is sleeved on the secondary wind pipe at the outer side of the rotary kiln cylinder body, the upper end of the sealing sleeve is provided with an upper end flange with a suspension overturning bolt, the middle-upper part of the secondary wind pipe is provided with a fixed flange which is fixedly arranged on the upper end flange, and flexible heat-resisting sealing stuffing is arranged between the sealing sleeve and the secondary wind pipe. The fire-resisting pouring material protection layer which is coated outside the secondary wind pipe can be laid in a safe and wide field outside the kiln, so the construction quality of the pouring material protection layer can be guaranteed. Due to the adoption of the installation structure and the installation method, the repairing time can be greatly shortened, the calcinations production capacity of a rotary kiln can be improved, the structure is simple, economical performance and practicability can be realized, and easiness for implementation can be realized.

Description

technical field [0001] The invention relates to a carbon calcination rotary kiln in the field of aluminum anode production, in particular to a carbon calcination rotary kiln secondary air pipe installation structure and installation method. Background technique [0002] The current secondary air duct of the carbon calcination rotary kiln is to extend the metal tube into the kiln tube and fix it outside the kiln tube. The construction personnel enter the kiln tube and weld a certain number of anchors on the outer wall of the metal tube. , and then apply a layer of refractory castable about 50mm thick to resist the high temperature of about 1300 ℃ in the kiln. [0003] During the operation of the carbon calcination rotary kiln, due to the large temperature gradient of the secondary air duct and its castable protective layer, which can reach more than 20°C / mm, the refractory castable on the secondary air duct is easily peeled off, making it difficult to penetrate into the kiln....

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a carbon calcination rotary kiln secondary air pipe installation structure and installation method. Refractory castable protective layer, long cooling time and large cooling range during secondary air duct maintenance, harsh operating environment for maintenance personnel, high risk of high temperature, large damage to kiln lining, short service life, etc.

Images