High-strength environment-friendly refractory brick and preparation method thereof

A refractory brick and environmental protection technology, applied in the field of refractory bricks, can solve problems such as the formulation of refractory bricks and the improvement of strength properties, and achieve the effects of improving the resistance to alkali gas phase corrosion, good economy, and improved thermal conductivity.

Inactive Publication Date: 2021-07-23
新沂北美高科耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The Chinese patent application number is CN201921890473.8, which discloses a composite wear-resistant refractory brick. By pressing the ceramic layer on both sides of the refractory brick, when the refractory brick is fired at high temperature, the ceramic layer forms a ceramic surface after being subjected to high temperature. It has strong wear resistance, and the formula and strength properties of refractory bricks have not been improved or improved.

Method used

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  • High-strength environment-friendly refractory brick and preparation method thereof
  • High-strength environment-friendly refractory brick and preparation method thereof
  • High-strength environment-friendly refractory brick and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031](1) Mixed material: The refractory brick, in terms of parts by mass, mainly consists of the following components: 22 parts of burnt gems, 20 parts of bauxite, 10 parts of andalusite, 7 parts of clay, 12 parts of silicon sulfide, elemental 4 parts of silicon, 5 parts of active α-Al2O3 micropowder, 2 parts of binder, and 1 part of pore-forming agent; the binder is aluminum dihydrogen phosphate solution, and the pore-forming agent is sawdust impregnated by sol; The specific gravity of the binder is 1.4; the mass ratio of sol and sawdust in the pore-forming agent is 7:440, and the sol is a mixture of alumina sol and silica sol, wherein the mass ratio of alumina sol and silica sol is 1:2; prepare materials according to the above formula; dry mix coke gemstone, bauxite, andalusite, clay, silicon sulfide, elemental silicon, and active α-Al2O3 micropowder in the mixing tank for 0.8h, then add pore-forming agent and colloid The impregnated sawdust was continued to be dry-mixed in...

Embodiment 2

[0039] (1) Mixture: The refractory bricks, in parts by mass, mainly consist of the following components: 25 parts of burnt gemstones, 22 parts of bauxite, 10 parts of andalusite, 6 parts of clay, 11 parts of silicon sulfide, elemental silicon 5 parts, 4 parts of active α-Al2O3 micropowder, 3 parts of binder, 2 parts of pore-forming agent; The binder is a kind of in the aluminum dihydrogen phosphate solution, and the pore-forming agent is after being impregnated by sol Sawdust; the specific gravity of the binder is 1.4; the mass ratio of sol and sawdust in the pore-forming agent is 8:40, and the sol is a mixture of alumina sol and silica sol, wherein the ratio of alumina sol and silica sol The mass ratio is 1:3; prepare materials according to the above formula; dry mix coke, bauxite, andalusite, clay, silicon sulfide, elemental silicon, and active α-Al2O3 micropowder in the mixing tank for 0.6h, and then add pore-forming After the sawdust is impregnated with the sol, continue d...

Embodiment 3

[0047] (1) Mixing material: the refractory brick, in terms of parts by mass, mainly consists of the following components: 20 parts of burnt gemstones, 22 parts of bauxite, 15 parts of andalusite, 5 parts of clay, 12 parts of silicon sulfide, elemental silicon 4 parts, active α-Al2O3 micropowder 5 parts, 1 part of binder, 2 parts of pore-forming agent; The binder is a kind of in polyvinyl alcohol, and the pore-forming agent is the sawdust impregnated by sol; The specific gravity of the binder is 1.4; the mass ratio of sol and sawdust in the pore forming agent is 7:42, and the sol is a mixture of alumina sol and silica sol, wherein the mass ratio of alumina sol to silica sol The ratio is 2:3; prepare materials according to the above formula; dry mix coke gemstone, bauxite, andalusite, clay, silicon sulfide, elemental silicon, and active α-Al2O3 micropowder in the mixing tank for 0.7h, then add pore-forming agent to be The sawdust impregnated with the sol was continued to be dry-...

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Abstract

The invention relates to a high-strength environment-friendly refractory brick, which is mainly prepared from the following components in parts by mass: 20 to 25 parts of flint clay, 20 to 25 parts of alumina, 10 to 15 parts of andalusite, 5 to 10 parts of clay, 10 to 15 parts of silicon sulfide, 2 to 5 parts of monatomic silicon, 2 to 5 parts of active alpha-Al2O3 micro powder, 1 to 3 parts of an adhesive and 1 to 3 parts of a pore-forming agent. The adhesive is one of an aluminum dihydrogen phosphate solution and polyvinyl alcohol, and the pore-forming agent is sawdust impregnated with sol. According to the high-strength environment-friendly refractory brick and the preparation method thereof, the formula setting is reasonable, the refractory brick has excellent fire resistance, meanwhile, the alkali gas phase erosion resistance and the overall strength of the refractory brick are improved, the preparation process is simple, large-scale production is easy, energy is saved, environment friendliness is achieved, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of refractory bricks, and in particular relates to a high-strength environment-friendly refractory brick and a preparation method thereof. Background technique [0002] With the continuous expansion and development of the industrial scale, the application of refractory bricks is becoming more and more extensive and the demand is increasing. At present, refractory bricks have been widely used in high-temperature fields such as cement, steel, and glass. With the progress and development of high-temperature industrial technology, the requirements for the quality of its auxiliary refractory materials are also getting higher and higher. The quality and life of sintered refractory bricks, which are widely used, are directly related to the safety of production and economic benefits in the field of high-temperature operations. [0003] Among them, refractory and high temperature resistant refractory bricks must be ...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B33/04C04B38/06
CPCC04B35/66C04B33/04C04B38/0675C04B2235/3217C04B2235/3463C04B2235/446C04B2235/428C04B2235/602C04B2235/606C04B2235/656C04B2235/6562C04B2235/6567C04B2235/5436C04B2235/77C04B2235/96C04B2235/9607
Inventor 戴永善
Owner 新沂北美高科耐火材料有限公司
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