A large bridge type shaft kiln for light burning of magnesite

Abstract

The invention belongs to the technical field of kilns, and specifically relates to a large-scale bridge-type shaft kiln for light burning of magnesite. There is a flue gas export bridge, a high temperature resistant bridge is installed in the calcining zone, and a cold air inlet bridge is installed in the cooling zone. The bridge body consists of a whole bridge body and two sections of transverse supports. The side kiln walls are connected to the central column, and the bridge body is installed on two lateral supports across the central column. The beneficial effect of the present invention is: through the arrangement of the left and right lateral supports and multiple lateral supports, the bridge type shaft kiln can be enlarged.

Description

technical field [0001] The invention belongs to the technical field of kilns, and in particular relates to a large bridge-type shaft kiln for light burning of magnesite. Background technique [0002] As a magnesia material industry in a high-energy-consuming industry, the calcination process of magnesite is an important process that cannot be overcome in the field of magnesia products. An important process, the light-burned magnesia produced by calcination is an intermediate product in the preparation process of mid-grade magnesia, high-grade magnesia and fused magnesia. The quality of magnesite light-burned products directly affects downstream magnesia refractories. Therefore, the research and industrialization of magnesite light burning equipment has always been a process that industry experts, scholars and enterprise engineers and technicians pay attention to, and the magnesite calcination needs Equipment and calcination technology directly affect the high-quality and he...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a large-scale bridge-type vertical kiln for light burning of magnesite, which overcomes the deficiencies in the prior art. A central column with a central channel is arranged between the left kiln wall and the right kiln wall. The kiln bodies support each other, increase the effective volume of the bridge-type shaft kiln, and realize the large-scale bridge-type shaft kiln. Moreover, the bridge body is subject to high temperature, high pressure and erosion for a long time, which often causes damage and shortens the service life, which limits the bridge-type shaft kiln. Wider application of the kiln, the central column between the kiln bodies of each layer is provided with a gas channel in the center, and the hot flue gas and cold air can be introduced according to the thermal system in the kiln to adjust the temperature of each process area, which is beneficial to the kiln. Body stability and connection strength, and flexible control of process conditions to improve sintering efficiency and quality

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