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Glazed coating for coke oven inner lining

A lining and glaze technology, applied in the field of coatings, can solve the problems of low strength, easy flow of hanging glaze, poor bonding strength, etc., and achieve the effects of improving productivity, not easy to peel off, and low labor intensity

Active Publication Date: 2017-11-17
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of binder, the coating has poor bonding strength on the furnace lining and is easy to crack
[0008] The Chinese patent No. CN200410023580.2 discloses a coke oven door brick glaze, the main raw material ratio of which is: spodumene 80-120 mesh 35-65%; clay fine powder 2-10%; pyrophyllite 200% Mesh 15-53%; feldspar 200 mesh 0-10%; sodium tripolyphosphate fine powder 0-1% (additional); the effect of hanging glaze is not good
The problem is that the temperature in the coke oven is often only below 1000°C, and when a large amount of clay is added, the glaze layer has low density, brittleness, low strength, low melting point, and the hanging glaze is easy to flow

Method used

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  • Glazed coating for coke oven inner lining
  • Glazed coating for coke oven inner lining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A glaze coating for coke oven inner lining, its raw material composition and weight percentage content are: fused silica with a particle size of 0.1-0.01 mm after being melted into a liquid state, and then cooled and crushed: 20.5% and average particle size Raw material ≤0.088mm: 32.5% fused silica fine powder, 12% spodumene fine powder, 4% feldspar fine powder, 27% by weight of zirconia mullite fine powder, 13% zirconia mullite fine powder, 11% magnesium oxide fine powder %, 5% of water glass fine powder with a modulus of 2.2, 0.05% of silicone emulsion, 1.95% of hydroxymethyl cellulose, and 7.5% of pure water added to the total amount of the above raw materials.

[0034] Through laboratory simulation experiments, it has not been found that the glaze coating has fallen off or flowed.

Embodiment 2

[0036] A glaze coating for coke oven lining, its raw material composition and weight percentage content are: fused silica with a particle size of 0.1-0.01 mm after being melted into a liquid state, and then cooled and crushed: 34% and average particle size ≤0.088mm raw materials: 31% fused silica fine powder, 5% spodumene fine powder, 3% feldspar fine powder, 26% by weight of zirconia mullite fine powder, 10% zirconia mullite fine powder, 7% magnesium oxide fine powder %, 4% of water glass fine powder with a modulus of 2.1, 3% of silicone emulsion, 3% of hydroxymethyl cellulose, and 12% of pure water added to the total amount of the above raw materials.

[0037] Through laboratory simulation experiments, it has not been found that the glaze coating has fallen off or flowed.

Embodiment 3

[0039]A glaze coating for coke oven lining, its raw material composition and weight percentage content are: fused silica with a particle size of 0.1-0.01 mm after being melted into a liquid state, and then cooled and crushed: 27% and average particle size Raw material ≤0.088mm: 25% fused silica fine powder, 14% spodumene fine powder, 8% feldspar fine powder, 25% by weight of zirconia mullite fine powder, 8% zirconia mullite fine powder, 10% magnesium oxide fine powder %, 7% of water glass fine powder with a modulus of 2.5, 0.1% of silicone emulsion, 0.9% of hydroxymethyl cellulose, and 16% of pure water added to the total amount of the above raw materials.

[0040] Through laboratory simulation experiments, it has not been found that the glaze coating has fallen off or flowed.

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Abstract

The invention discloses glaze paint for a coke oven lining. The glaze paint consists of the following raw materials in percentage by weight: 20-40% of fused quartz with the granularity of 0.1-0.01 mm, as well as 20-35% of fused quartz fine powder, 1-15% of spodumene fine powder, 2-10% of feldspar fine powder, 0.05-15% of zirconium mullite fine powder, 5-12% of magnesium oxide fine powder and 3-8% of water glass fine powder of which the granularities are all less than or equal to 0.088 mm, 0.01-5% of organic silicon emulsion, 0.01-3% of hydroxymethyl cellulose, and purified water of which the weight is 7-25% of the total weight of the raw materials. The paint is strong in binding force with the coke oven lining, and has low possibility of falling off; graphite is hard to adhere onto the lining, and even if a small amount of graphite is adhered onto the lining, the cleaning is easy; the labor intensity is small; the productivity is increased; glaze can be prefired in advance or directly formed in the use process.

Description

technical field [0001] The invention relates to a coating, in particular to a glaze coating for inner lining of coke ovens. Background technique [0002] During the production process of the coke oven, there is volatilization of organic substances such as tar. During the evaporation process, some organic matter will be carbonized and attached to the furnace lining, and graphite will be formed after a long time, which will affect the operation of the gas in the furnace and the normal production. In order to ensure production, it is necessary to manually clean up graphite attachments with steel brazing or other tools on a regular basis, which has the disadvantage of high labor intensity. For this reason, there is an urgent need to solve the problem of difficult removal of graphite carbon deposits on the furnace lining. [0003] Searched: [0004] The Chinese patent No. is the document of CN95193099.0, which discloses a kind of glaze for high-temperature coating of refractor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 徐国涛张洪雷
Owner 武汉钢铁有限公司