Stable kiln liner of asphalt rotary kiln

Abstract

The invention relates to an asphalt rotary kiln, in particular to a stable kiln liner of an asphalt rotary kiln. The stable kiln liner is divided into a part from a kiln front cover to a transition section and a part from the transition section to a kiln end. A liner of the part from the kiln front cover to the transition section adopts a double-layer precast block brick mode, a heat preservation layer is made of light pouring materials, and a working layer is made of ultra-low cement combined with high-purity corundum-mullite pouring materials. The kiln liner adopts four fixed precast blocks which are distributed at 360 degrees, and a precast block brick is built between every two fixed precast blocks in a welding mode. The part from the transition section to the kiln end adopts a mode combining double-layer precast block bricks and pouring materials, a heat preservation layer is made of light pouring materials, a working layer is made of ultra-low cement combined with high-purity corundum-mullite pouring materials, and the kiln liner adopts a clip flower mode with nine precast blocks and nine pouring materials. By means of the kiln liner, structural stability of brickworks of the kiln liner is ensured, pulverization of the heat preservation layers in the production process is avoided, and accordingly, service life of the kiln liner is prolonged.

Description

technical field [0001] The invention relates to an asphalt rotary kiln, in particular to a kiln lining of the asphalt rotary kiln. Background technique [0002] The working characteristic of the rotary kiln is that the lining body in the kiln rotates with the kiln shell at high temperature, and is in a long-term vibrating state, and at the same time, it also bears the wear and impact of the charge. Therefore, according to the production characteristics and process conditions of the rotary kiln, it is very important to select the refractory material of the appropriate material and the reasonable lining structure for the production of the rotary kiln. [0003] At present, the kiln lining of asphalt coke rotary kilns at home and abroad adopts two structural forms, one is a brick structure, and the other is a castable castable structure. At present, after the domestic pitch coke rotary kiln produces needle coke products, the pitch coke rotary kiln produces pitch coke and needle...

AI Technical Summary

Problems solved by technology

In addition, it is unfavorable for the maintenance of the rotary kiln after normal operation. The disassembly of the castable during maintenance will be restricted by the site of the rotary kiln, resulting in difficulty in disassembly and uncertain maintenance time. For the rotary kiln with relatively full production tasks, it cannot meet its requirements. Long service life requirements

[0007] Therefore, there is no stable pitch coke rotary kiln lining structure at home and abroad to meet the requirements of production and operation.

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