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

A refractory material and cordierite technology, applied in the field of refractory materials, can solve the problems of cracks, deformation of heat-resistant steel lining plates, shortened service life of coke tanks, etc., and achieve the effects of high efficiency, reduced heat transfer, and improved operation rate

Pending Publication Date: 2020-11-24
HENAN HAOYUNXIANG REFRACTORY MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 has better fluidity and is suitable for casting prefabrication.

[0018] The parts by weight of raw materials in the present invention are: 20 parts of fused mullite of 1-3mm, 45 parts of fused mullite of 3-5mm, 10 parts of cordierite of 0-1mm, 10 parts of cordierite of 1-3mm 40 parts of cordierite, 20 parts of 200-mesh corundum fine powder, 3 parts of silicon nitride fine powder, 4 parts of calcium aluminate cement, 2 parts of silicon micropowder, 7 parts of alumina micropowder, 2 parts of asbestos fiber, sodium tripolyphosphate addition It is 0.15% of the total weight of raw materials, the addition of citric acid is 1% of the total weight of raw materials, and the addition of rubber powder is 2% of the total weight of raw materials.

[0019] Pour the above components into a blender and dry mix for 3-5 minutes, then add 8-10% tap water or industrial water and stir for 5-10 minutes, after uniformity, then pour into a mold, naturally maintain, and dry for use. ...

Embodiment 2

[0021] Embodiment 2: It has better smearing performance, wide application range, low cost, and convenient construction, and is used for difficult construction, narrow space, irregular working surface, etc.; it is mainly used for silos and ash hoppers.

[0022] The parts by weight of raw materials in the present invention are: 45 parts of fused mullite of 1-3mm, 10 parts of fused mullite of 3-5mm, 10 parts of cordierite of 0-1mm, 10 parts of cordierite of 1-3mm 40 parts of cordierite, 5 parts of 200 mesh corundum fine powder, 8 parts of silicon nitride fine powder, 4 parts of calcium aluminate cement, 6 parts of silicon micropowder, 7 parts of alumina micropowder, 0.5 part of asbestos fiber, sodium tripolyphosphate and six Sodium metaphosphate is 0.15% of the total weight of raw materials, soft clay is 3% of the total weight of raw materials, rubber powder is 0.05% of the total weight of raw materials, and sodium carboxymethyl cellulose is 0.1% of the total weight of raw materia...

Embodiment 3

[0025] Component 3: suitable for spraying, wide application range, convenient construction, high efficiency, low cost, etc.; mainly used for silos and ash hoppers.

[0026] 35 parts by mass of fused mullite 3-1mm, 10 parts of fused mullite 1-0mm, 20 parts of cordierite 1-0mm, 5 parts of corundum powder 200 mesh, 20 parts of calcium aluminate cement, 1 part of alumina micropowder , 1 part of silicon micropowder, 8 parts of silicon nitride fine powder, 1 part of asbestos fiber, the addition of soft clay is 2% of the total weight of raw materials, carboxymethyl cellulose is 0.5% of the total weight of raw materials, polymer glue Powder is 0.5% of the total weight of raw materials, and 8% sodium carbonate and sodium silicate solution is 1% of the total weight of raw materials.

[0027] Pour the above components (excluding sodium carbonate and sodium silicate solution) into the mixer and dry mix for 3 minutes, then add 9-11 parts of tap water or industrial water, continue to stir f...

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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...

Claims

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Application Information

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IPC IPC(8): C04B35/185C04B35/66C04B35/82C10B39/02
CPCC04B35/185C04B35/66C04B35/82C10B39/02C04B2235/3481C04B2235/3206C04B2235/3208C04B2235/3222C04B2235/3217C04B2235/3418C04B2235/3873C04B2235/3436C04B2235/3201C04B2235/5427C04B2235/5436C04B2235/96
Inventor 李要现化人杰
Owner HENAN HAOYUNXIANG REFRACTORY MATERIAL CO LTD
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