Carbon-calcining rotary kiln lining and second tuyere structure thereof

Abstract

The invention relates to carbon-calcining rotary kilns in the field of carbon production, in particular to a carbon-calcining rotary kiln lining and a second tuyere structure thereof. The lining comprises a metal kiln body and the second tuyere structure, wherein the inner side of the metal kiln body is provided with a light castable heat-insulation layer, and a lining equal-dividing strip with grooves and a lining equal-dividing strip with bosses are arranged on the light castable heat-insulation layer. The invention has the following advantages that cracking degree of construction joints can be effectively eased; the grooves on two sides of the lining equal-dividing strip formed by a special template can increase the integral strength of the kiln lining through the tight bite with the post-cast lining equal-dividing strip; high-temperature materials during the operation of rotary kilns can be effectively blocked to ensure that the materials cannot directly enter the heat-insulation layer so as to help protect the integrity of the heat-insulation layer and simultaneously protect the metal kiln body against the damage of the high-temperature materials; and the effect of prolonging the lifespan of the rotary kiln lining can be directly achieved so as to obviously reduce the cost for maintaining the rotary kiln lining and effectively reduce the cost of carbon-calcining production.

Description

technical field [0001] The invention relates to a carbon calcining rotary kiln in the field of carbon production, in particular to an inner lining of a carbon calcining rotary kiln and a secondary tuyere structure thereof. Background technique [0002] The refractory lining is the working surface of the carbon calcination rotary kiln for high-temperature calcination production. It is the main structure for the rotary kiln to withstand high temperatures. It is generally made of refractory castables cast in the metal kiln body with heat-resistant metal anchors. In order to reduce the thermal conductivity of the kiln lining material, thereby reducing the heat transferred from the inner lining to the metal kiln body, and reducing the surface temperature of the kiln body, before pouring the refractory castable, a layer of light weight 60-80mm thick is first attached to the surface of the kiln body. High-quality castable heat insulation layer to ensure that the surface temperature...

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to provide a carbon calcination rotary kiln lining and its secondary tuyere structure in order to solve the above technical problems. Afterwards, the heat insulation layer is emptied and the metal kiln body is subjected to high temperature damage.

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