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High-strength abrasive brick for aviation garbage furnace

A waste incinerator, wear-resistant brick technology, applied in the direction of incinerators, combustion chambers, combustion methods, etc., can solve the problems of poor thermal shock resistance and erosion resistance, poor creep performance, low porosity, etc., and achieve thermal shock resistance Strong corrosion resistance, low porosity, and good creep performance

Active Publication Date: 2010-10-20
浙江圣奥耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current furnace wall refractory bricks have low porosity, poor creep performance, poor thermal shock resistance and erosion resistance, and are easily broken during waste incineration.

Method used

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  • High-strength abrasive brick for aviation garbage furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A high-strength wear-resistant brick for an aviation waste incinerator, characterized in that it is composed of the following components and the mass percentage of the components is:

[0063] 3 ~ 1mm mullite 25%

[0064] 1~0.1mm mullite 10%

[0065] <0.1mm mullite 25%

[0066] 1~0.074mm brown corundum or white corundum 12%

[0067] <0.074mm brown or white corundum 12%

[0068] α-A1 2 o 3 Micronized 2%

[0069] Silica powder <1mm 2%

[0070] Industrial phosphoric acid 12%.

[0071] Manufacturing process:

[0072] Preparation of 50% industrial phosphoric acid:

[0073] The general concentration of industrial phosphoric acid sold on the market is 85%, and the same concentration as castable binder is generally 45%-60%, so industrial phosphoric acid can be diluted with tap water, and the water consumption can be diluted by adding water as shown in the table below.

[0074] Phosphoric acid dilution water consumption

[0075] Phosphoric acid concentration% ...

Embodiment 2

[0135] A high-strength wear-resistant brick for an aviation waste incinerator, characterized in that it consists of the following components and the mass percentage of the components is:

[0136] 3~1mm mullite 37%

[0137] 1-0.1mm mullite 8%

[0138] <0.1mm mullite 23%

[0139] 1~0.074mm brown corundum or white corundum 10%

[0140] <0.074mm brown or white corundum 10%

[0141] 2 o 3 Micronized powder 1%

[0142] Silica powder <1mm 1%

[0143] Industrial phosphoric acid 10%.

[0144] Its manufacturing process is the same as in Embodiment 1.

Embodiment 3

[0146] A high-strength wear-resistant brick for an aviation waste incinerator, characterized in that it is composed of the following components and the mass percentage of the components is:

[0147] 3-1mm mullite 33%

[0148] 1-0.1mm mullite 9%

[0149] <0.1mm mullite 23%

[0150] 1~0.074mm brown corundum or white corundum 10%

[0151] <0.074mm brown or white corundum 10%

[0152] 2 o 3 Micronized 2%

[0153] Silica powder <1mm 2%

[0154]Industrial phosphoric acid 11%.

[0155] Its manufacturing process is the same as in Embodiment 1.

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Abstract

The invention discloses a brick with high strength abrasion performance and used in an aero garbage incinerator, composing of 25% to 37 % of 3 mm to 1 mm of mullite, 8% to 10 % of 1 mm to 0.1 mm of mullite, 23% to 25 % of mullite less than 0.1 mm, 10% to 12 % of 1 mm to 0.074 mm of brown fused alumina or white fused alumina, 10% to 12 % of brown fused alumina or white fused alumina less than 0.074 mm, 1% to 2% of micro powder of alpha-Al2O3 less than 5Mum, 1% to 2% of micro powder of silicon less than 1 mm and 10% to 12% of industrial phosphoric acid by mass percent, and has low porosity, good creep property and strong resistance to heat shock and corrosion, thereby being applicable to the abrasive backing of high-temperature industrial furnaces such as circulating fluidized bed and flameboiler, etc.

Description

technical field [0001] The invention relates to a high-strength wear-resistant brick for an aviation garbage incinerator. technical background [0002] With the development of society, people are gradually worried about the increasingly serious pollution of their living environment. Disposal and reuse of municipal waste is one of the important issues of environmental issues. [0003] The temperature of the combustion chamber of the waste incineration equipment is as high as 1300°C, and the slag damages the refractory bricks of the furnace wall very seriously. The current furnace wall refractory bricks have low porosity, poor creep performance, poor thermal shock resistance and erosion resistance, and are easily broken during waste incineration. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a high-strength wear-resistant brick for aviation waste incinerators, which has low porosity, good creep performance, str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23M5/00F23G5/44
Inventor 范圣良
Owner 浙江圣奥耐火材料有限公司
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