Enameled brick for oven door of coke oven

Abstract

The invention relates to an enameled brick for an oven door of a coke oven and belongs to the technical field of fireproofing material preparation. The enameled brick consists of a brick body and a glaze material coated on the surface of the brick body. The enameled brick is characterized in that the glaze material is prepared from the following ingredients in parts by weight: 45 to 55 parts of feldspar, 5 to 15 parts of quartz, 10 to 18 parts of stalactite, 0 to 6 parts of ripe talc, 4 to 10 parts of raw datong, 0 to 4 parts of Suzhou soil, 1 to 8 parts of alumina, 10 to 20 parts of zircon powder and 3 to 8 parts of barium carbonate. The oven door of the coke oven built by the enameled brick for the oven door of the coke oven provided by the invention has the advantages that the low freecarbon granule and tar penetration adhesion phenomenon can be reduced, the surface carbon deposition condition of the oven door is obviously improved in the use process, the average month adhesion deposition-free thickness is 1 to 2mm, the monthly average cleaning times are 2 to 4, the cleaning times and the cleaning difficulty of the carbon deposition of the oven door of the coke oven are effectively reduced, and the mechanical damage to the oven door of the coke oven in the cleaning process is reduced. Through the monitoring on the enameled brick used for one year, the brick body of the enameled brick for the oven door of the coke oven does not have the damage phenomenon, and the brick body surface of the brick for the oven door of the coke oven does not have tar penetration conditions.

Description

technical field [0001] The invention belongs to the technical field of refractory material processing, and in particular relates to a glazed brick for a coke oven door. Background technique [0002] A coke oven is a kiln for refining coke from coal, usually made of refractory bricks and refractory blocks, and is the main thermal equipment for coking. With the large-scale coke oven, environmental protection and national emission reduction requirements, the requirements for the coke oven door are increasing day by day. The furnace door brick is an important part of the coke oven door, and the normal working temperature is about 900-1050°C. The material is mostly clay refractory material. Under normal working conditions, tar, carbon particles, etc. are produced to severely corrode the bricks. Tar, etc. adhere to the surface of the bricks and are difficult to remove, resulting in poor sealing of the furnace door, high thermal conductivity of the brick body, and high external t...

AI Technical Summary

Problems solved by technology

Under normal working conditions, tar, carbon particles, etc. are produced to severely corrode the bricks. Tar, etc. adhere to the surface of the bricks and are difficult to remove, resulting in poor sealing of the furnace door, high thermal conductivity of the brick body, and high external temperature of the furnace door. Normal production, polluting the environment

[0003] Most of the existing furnace door bricks are made of clay refractory materials. There are several disadvantages in the use of this furnace door brick: first, the liquid and gaseous compounds such as tar in the coking process diffuse into the interior of the brick through the apparent pores of the brick and interact with it. The substances in the bricks produce chemical and physical effects, thereby destroying the internal structure of the bricks, reducing the comprehensive physical properties of the bricks, increasing energy consumption, and accelerating the damage of the bricks; secondly, during the use of the coke oven, coking products such as tar and other solid substances Bonded on the surface of the brick, forming carbon deposits, with the thickening of the carbon deposit layer, the furnace door is not tightly sealed, and gas leakage occurs, which has a serious impact on the job site. The removal of carbon deposits is usually done mechanically. Harsh conditions, labor-intensive, and mechanical operations during cleaning accelerated the damage to the furnace door bricks

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