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Compact ceramic fiber spraying lining and its working process

A technology of ceramic fiber and construction technology, which is applied in coatings, devices for coating liquid on the surface, lighting and heating equipment, etc., can solve the problems of poor water resistance and thermal shock resistance, and low strength of sprayed linings, and achieve heat resistance High shock resistance, improved anti-flue gas erosion performance, and easy to transform old furnaces

Inactive Publication Date: 2003-11-26
北京嘉邦环保工程技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of low strength, poor water resistance and thermal shock resistance of the sprayed lining existing in the existing ceramic fiber spraying process, and to provide a dense ceramic fiber sprayed lining and its spraying process

Method used

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  • Compact ceramic fiber spraying lining and its working process
  • Compact ceramic fiber spraying lining and its working process
  • Compact ceramic fiber spraying lining and its working process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dense ceramic fiber spray lining composed of ceramic fiber and high temperature binder, the high temperature binder contains Al 2 o 3 Micropowder, SiO 2 Micropowder, nanoscale Al 2 o 3 Powder, ammonia and water, wherein the weight percentage of each component is: Al 2 o 3 Micropowder 2.8%, SiO 2 Micropowder 3.5%, nanoscale Al 2 o 3 Powder 1.0%, ammonia water 0.9%, water 91.8%, admixture in proper amount. The sum of the content percentages of each component is 100%.

[0021] The preparation method of high temperature binder is as follows: figure 1 As shown, the proportion of Al 2 o 3 Micropowder, SiO 2 Micropowder, mix and stir evenly, add ammonia and water, put it into a stainless steel reaction kettle, and put nano-scale Al 2 o 3 Put the powder and admixture together into a stainless steel reaction kettle, and stir for 2 hours at a temperature of 110°C to make a finished high-temperature binder.

[0022] The construction technique of the dense type ceram...

Embodiment 2

[0025] Dense ceramic fiber spray lining composed of ceramic fiber and high temperature binder, the high temperature binder contains Al 2 o 3 Micropowder: 3.0%, SiO 2 Micropowder: 3.3%, nano-scale AlO 3 Powder: 0.9%, Ammonia: 1.1%, Nano ZrO 2 powder and nanoscale SiO 2 Powder: trace amount, additive: appropriate amount, water: the rest, the sum of the percentages of each component is 100%.

[0026] The preparation method of the high-temperature binder and the construction process of the dense ceramic fiber sprayed lining are the same as in the first embodiment.

Embodiment 3

[0028] High temperature bond contains Al 2 o 3 Micropowder: 3.2%, SiO 2 Micropowder: 3.5%, nanoscale Al 2 o 3 Powder: 0.9%, ammonia water: 1.1%, water: 91.3%, admixture: appropriate amount. The sum of the content percentages of each component is 100%.

[0029] The preparation method of the high-temperature binder and the construction process of the dense ceramic fiber sprayed lining are the same as in the first embodiment.

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Abstract

The compact ceramic fiber spraying lining consists of ceramic fiber and high temperature binding agent, and the high temperature binding agent has ingredients including fine alumina powder 2.8-3.2 wt%, fine silica powder 3.3-3.7 wt%, nanometer level alumina powder 0.9-1.1 wt%, and ammonia water 0.9-1.1 wt% except water. During forming ceramic fiber spraying lining, one spray gun with several atomizing nozzles around it is used, the high temperature binding agent is pumped into the atomizing chamber and sprayed via the atomizing nozzles while ceramic fiber is sprayed from the spray gun, and the sprayed binding agent and the ceramic fiber are mixed in the air and the mixture is jetted to the lined surface to form the compact ceramic fiber spraying lining. With high strength, excellent waterproof performance, high heat shock resistance, easy construction and low cost, the sprayed lining is suitable for industrial furnace, tower, cylinder, etc.

Description

technical field [0001] The invention relates to a ceramic fiber spray lining and its construction method, especially a dense ceramic fiber spray lining and its construction method, which is mainly suitable for the refractory lining of various industrial kilns, and also suitable for towers, tanks and containers. Spraying construction of insulation layer. Background technique [0002] In recent years, due to its advantages of high temperature resistance, vibration resistance, heat insulation, sound absorption and light weight, ceramic fiber has partially replaced brick structures and castables and has become the preferred material for refractory, heat preservation, heat insulation, sound insulation and fire prevention. , Petroleum, chemical industry, machinery, electronics, construction, light industry and other industries are widely used. At the same time, the construction technology of ceramic fiber is also seeking new development in the continuous updating and improvement....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/02C04B35/80C09D1/00C09D7/12F27D1/00
Inventor 孙庆安殷卫江李宇峰王晓宇
Owner 北京嘉邦环保工程技术有限责任公司
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