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Method for producing aluminum silicate ceramic fiber surface coating capable of being used at temperature of 1600 DEG C

A technology of aluminum silicate ceramics and fiber surface, which is applied in the field of refractory fiber blanket production, and can solve problems such as limited temperature resistance

Active Publication Date: 2012-07-25
SUZHOU ISOLITE EASTERN UNION CERAMIC FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the surface coatings commonly used in China have limited heat resistance effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The parameters are as follows:

[0019] (1) Fiber mixing and stirring: 10% alumina fiber, 5% aluminum silicate fiber, the stirring speed is 105rpm, and the time is 5min;

[0020] (2) Particle stirring: the proportion of mullite particles is 20%; the stirring speed is 105rpm, and the time is 5min;

[0021] (3) Sol stirring: silica sol 6%; stirring speed 180rpm, time 5min

[0022] (4) Binder added: water 58.3%, binder 0.7%;

[0023] (5) Mixing and stirring: Use a universal mixer, set the speed at 105rpm and stir for 5 minutes, then speed up to 425rpm and stir for 20 minutes;

[0024] (6) Drying: Dry at 105°C for 24 hours

[0025] Measured product performance: heating permanent line change rate (1500℃×24h) 0.61%, other characteristic parameters density 0.47g / cm 3 , Flexural strength 0.64Mpa.

Embodiment 2

[0027] The parameters are as follows

[0028] (1) Fiber mixing and stirring: alumina fiber 7.5%, aluminum silicate fiber 7.5%, stirring speed 105rpm, stirring time 5min

[0029] (2) Particle stirring: the proportion of mullite particles is 20%; the stirring speed is 105rpm, and the stirring time is 5min

[0030] (3) Sol stirring: silica sol 9%; stirring speed 180rpm, stirring time 5min

[0031] (4) Binder added: 55.5% water, 0.7% binder;

[0032] (5) Mixing and stirring: Use a universal mixer, set the speed at 105rpm and stir for 5 minutes, then speed up to 425rpm and stir for 20 minutes;

[0033] (6) Drying: Dry at 105°C for 24 hours

[0034] Measured product performance: heating permanent line change rate (1500℃×24h) 0.99%, other characteristic parameters, density 0.52g / cm 3 , Flexural strength 0.7Mpa.

Embodiment 3

[0036] The parameters are as follows

[0037] (1) Fiber mixing and stirring: alumina fiber 9%, aluminum silicate fiber 9%, stirring speed 180rpm, stirring time 8min

[0038] (2) Particle stirring: the proportion of mullite particles is 20%; the stirring speed is 105rpm, and the stirring time is 5min

[0039] (3) Sol stirring: silica sol 9%; stirring speed 180rpm, stirring time 10min

[0040] (4) Binder added: water 52.4%, binder 0.6%;

[0041] (5) Mixing and stirring: use a universal mixer, set the speed at 105rpm, stir for 5 minutes, then speed up to 425rpm, stir for 20 minutes;

[0042] (6) Drying: 105°C 24h

[0043] Measured product performance: heating permanent line change rate (1500℃×24h) 0.85%, other characteristic parameters density 0.58g / cm 3 , Flexural strength 0.75Mpa.

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PUM

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Abstract

The invention discloses a method for producing an aluminum silicate ceramic fiber surface coating capable of being used at the temperature of 1600 DEG C. The product obtained via the method is prepared by a special formula, the highest service temperature is 1600 DEG C, the heating permanent linear change rate is (1500 DEG C X24h) <=1%, and effects can be achieved after the aluminum silicate ceramic fiber surface coating is dried at the temperature of 105 DEG C.

Description

technical field [0001] The invention relates to the field of production of refractory fiber blankets, in particular to a method for producing surface coatings for aluminum silicate ceramic fibers at a temperature of 1600°C. Background technique [0002] At present, in the application of refractory materials in various domestic kilns, ceramic fiber blocks are widely used as refractory insulation layers. Due to the special properties of ceramic fibers, their shrinkage rate is small, thermal conductivity is small, and thermal insulation performance is good. However, in the case of high wind speed, such as in some kilns with relatively high wind speed, due to the relatively soft performance of the ceramic fiber itself, the surface fibers will be blown away. On the one hand, the environment in the furnace will deteriorate, and on the other hand, the insulation layer will It is gradually eroded, the thickness of the insulation layer is reduced, and the energy-saving effect is redu...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 陶治平严继军
Owner SUZHOU ISOLITE EASTERN UNION CERAMIC FIBER