Cordierite-containing composite refractory material for working linings of coke dry quenching tank and bin body

Abstract

The invention discloses a cordierite-containing composite refractory material for working linings of a coke dry quenching tank and a bin body. The refractory material is prepared from the following raw materials in parts by weight: 20-45 parts of 1-3mm fused mullite, 10-45 parts of 3-5 mm fused mullite, 10-20 parts of 0-1mm cordierite, 15-40 parts of 1-3 mm cordierite, 5-20 parts of 200-mesh corundum fine powder, 3-8 parts of silicon nitride fine powder, 4-15 parts of calcium aluminate cement, 2-6 parts of silica powder, 1-7 parts of aluminum oxide micro powder and 0.5-2 parts of asbestos fiber, wherein the adding amount of a composite additive accounts for 0.1-10% of the total weight of the raw materials. The refractory material has good coating performance, is used for positions with construction difficulty, narrow space and irregular working surface, solves the problem of short service life of a whole coke tank caused by severe deformation, cracks and abrasion of a heat-resistant steel lining plate, prolongs the service life of the tank body, improves the operation rate of the tank body, saves energy and reduces consumption.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a composite refractory material containing cordierite for the working lining of dry quenching coke tanks and bin bodies. Background technique [0002] my country's CDQ equipment technology began in the 1980s. During this period, many process improvements and equipment replacements have been experienced, and square coke tanks will gradually be eliminated. Due to the constraints of various factors, there are still a small number of enterprises still using square coke pots in their production. The square coke drum is used for the transfer and lifting of coke between coke oven and CDQ furnace. The liner of the CDQ tank needs to withstand a high temperature of 950°C-1050°C while bearing a large impact force, and when it is empty, it is all exposed to the air for oxidation. This high-temperature conversion between heavy load and no load About 10 minutes, especially when the ambien...

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Problems solved by technology

[0004] The invention provides a composite refractory material containing cordierite for the working lining of CDQ coke tank and bin body, which solves the problem of serious deformation, cracks and wear (inclined surface) of the heat-resistant steel lining board, which may cause damage to the coke tank. The problem of overall service life reduction can also be applied to other containers and bins

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