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Ultra-microporous lightweight insulated firebrick and manufacture method thereof

A technology of light-weight thermal insulation and manufacturing method, applied in the field of refractory bricks, can solve the problems of not being able to be used as refractory materials, etc., and achieve the effects of good thermal insulation effect, obvious economic benefits, and low linear change rate

Active Publication Date: 2010-01-06
郑州东方炉衬材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The brick has the characteristics of light weight, high strength, good water absorption, good sound insulation effect, etc., but the brick is a general building brick and cannot be used as a refractory material

Method used

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  • Ultra-microporous lightweight insulated firebrick and manufacture method thereof
  • Ultra-microporous lightweight insulated firebrick and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Ultra-microporous lightweight heat-insulating refractory brick and its manufacturing method

[0031] The composition of raw materials is shown in the corresponding data in Table 1, and the data in the table are calculated by weight percentage. For example, taking 100kg of raw materials as an example, 60kg of high-alumina bauxite powder with a particle size of 0.075-4mm, and 8kg of kyanite expansion agent with a particle size of ≤0.124mm, Granularity≤0.074mm kaolin binder 32kg, plus the blowing agent accounting for 0.5% of the above-mentioned raw material gross weight, i.e. 0.5kg, the used blowing agent of this example is cationic surfactant type blowing agent, can adopt dodecyl di methyl ammonium bromide.

[0032] The brick manufacturing method comprises the following steps: uniformly mixing the powder, expansion agent and binder, adding water, the ratio of the mixture to water is 3-4:1, mixing the mixture into a paste, and setting aside; foaming The agent a...

Embodiment 2

[0034] Example 2: Ultra-microporous lightweight heat-insulating refractory brick and its manufacturing method

[0035] See the corresponding data in Table 1 for the composition of raw materials. The powder, expansion agent, binder and particle size used are the same as in Example 1. The foaming agent is a cationic liquid foaming agent which is octadecyltrimethylammonium chloride.

[0036]The manufacturing method of the brick comprises the following steps: uniformly mix the powder, expansion agent and binder, add water, the ratio of the mixture to water is 3-4:1, stir to make a paste, and set aside; Foaming agent and water are mixed at a ratio of 1:16 and then added to a foaming machine to obtain a foam with a pore size of 0.2 to 0.5 mm. Mix the foam with the paste evenly, then pour it into a mold and pour it into adobe, and the adobe is dried. Finally, put the adobe into the kiln, heat it from normal temperature to 1450 ° C, keep it at this sintering temperature for 6 hours, t...

Embodiment 3

[0037] Example 3: Ultra-microporous lightweight heat-insulating refractory brick and its manufacturing method

[0038] The composition of raw materials is shown in the corresponding data in Table 1. The used powder, expansion agent, binding agent and particle size are the same as in Example 1. The foaming agent is an anionic surfactant type foaming agent, using sodium lauryl sulfate, lauryl Sodium sulfonate or sodium secondary alkyl sulfonate.

[0039] The manufacturing method of the ultra-microporous lightweight heat-insulating firebrick comprises the following steps:

[0040] Mix the powder, expansion agent and binder evenly, add water, the ratio of the mixture to water is 3-4:1, stir to make a paste, and set aside; mix the foaming agent and water at a ratio of 1:15 After mixing in proportion, add it to a foaming machine to obtain a foam with a pore size of 0.2-0.5mm, mix the foam with the paste evenly, then pour it into a mold and pour it into adobe, and put the adobe into...

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Abstract

The invention discloses an ultra-microporous lightweight insulated firebrick and a manufacture method thereof. The ultra-microporous lightweight insulated firebrick is prepared by the following raw materials in percentage by weight: powder mainly comprising 50-70 Al2O3 and SiO2, 5-10 expanding agent, 25-40 caking agent and 0.2-1.0 external foaming agent. The manufacture method comprises the following steps: uniformly mixing and stirring the raw materials into pasty material; mixing the foaming agent and water according to a ratio of 1: (15-20); adding the mixture to the pasty material to mix uniformly; then, casting into brick blanks; and drying and keeping the brick blanks at a temperature of 1200-1600 DEG C for 6-8 hours. The firebrick has the advantages of high compressive strength, low coefficient of heat conductivity and low linear change ratio and can be directly used for a fireproof coating of thermal equipment so that the product has the lightweight insulation and fireproofness functions and good insulation effect and is beneficial to energy saving and environmental protection. Compared with the prior art, the invention has obvious economic benefits.

Description

1. Technical field: [0001] The invention relates to a refractory brick, in particular to an ultra-microporous lightweight heat-insulating and heat-retaining refractory brick for thermal equipment heat insulation layer and a manufacturing method thereof. 2. Background technology: [0002] Energy is in short supply worldwide, and various thermal equipment is an important facility in industrial production, and it is also a large energy consumer. Therefore, it is required that the performance of the refractory layer and thermal insulation layer of various thermal equipment is good for the long-term safe use of thermal equipment. And energy saving and consumption reduction to obtain better economic benefits. [0003] At present, the production and manufacture of refractory bricks and their products of various materials require light weight, heat preservation, heat insulation and fire resistance. Small balls, etc.; (2) adding low-density, low refractoriness lightweight materials,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/622C04B38/02
Inventor 张青永耿昌彬
Owner 郑州东方炉衬材料有限公司
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