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Multielement high-strength wear-resistant composite paint and preparation method thereof

A composite coating, high-strength technology, applied in the field of refractory materials and its preparation, can solve the strict requirements of wear resistance, corrosion resistance, erosion resistance and thermal shock stability, which affect the normal operation of circulating fluidized bed boilers, circulating flow Problems such as the complex construction system of the chemical bed boiler, to achieve the effect of good wear resistance, high hardness and high density

Inactive Publication Date: 2015-05-20
YIXING GUOQIANG FURNACE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The construction system of circulating fluidized bed boilers is complex, the construction volume is large, the flow rate of pulverized coal in the system pipeline is high, and the flow rate is large, so the performance requirements for refractory materials are particularly strict
The existing refractories used in circulating fluidized bed boilers are made of high-alumina clinker or white corundum raw materials, with high cement content, resulting in poor wear resistance, erosion resistance, erosion resistance and thermal shock stability. To meet the strict requirements of circulating fluidized bed boiler technology, frequent repairs or replacements are required, which affects the normal operation of circulating fluidized bed boilers and high operating costs

Method used

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  • Multielement high-strength wear-resistant composite paint and preparation method thereof

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Embodiment 1

[0020] The multi-component high-strength wear-resistant composite coating is composed of main materials and auxiliary materials, and the weight ratio of main materials and auxiliary materials is 67:27; the main materials and auxiliary materials are composed of the following raw materials in parts by weight:

[0021] Main ingredients, 19 parts of zirconium corundum fine powder with a particle size of 1-2.5 mm; 27 parts of zirconium corundum fine powder with a particle size of 0.5-1 mm; 7 parts of zirconium corundum fine powder with a particle size of 0.072-0.093 mm; 10 parts of kyanite; 9 parts of pure calcium aluminate cement; 8 parts of aluminum titanate; 4 parts of magnesia-zirconium sand; 9 parts of silicon micropowder; 5 parts of alumina micropowder; 0.3 part of sodium triphosphate; 1 part of calcium chromate; Among them, the silica powder is fused silica powder with a silicon content ≥ 98%, the magnesium oxide content in the magnesia-zircon sand is 92%, and the titanium di...

Embodiment 2

[0029] The multi-component high-strength wear-resistant composite coating is composed of main materials and auxiliary materials, and the weight ratio of main materials and auxiliary materials is 70:12; the main materials and auxiliary materials are respectively composed of the following raw materials in parts by weight:

[0030] Main ingredients, 23 parts of zirconium corundum fine powder with a particle size of 1-2.5 mm; 23 parts of zirconium corundum fine powder with a particle size of 0.5-1 mm; 16 parts of zirconium corundum fine powder with a particle size of 0.072-0.093 mm; 16 parts of kyanite; 7 parts of pure calcium aluminate cement; 4 parts of aluminum titanate; 7 parts of magnesia-zircon sand; 5 parts of silicon micropowder; 3 parts of alumina micropowder; Among them, the silica powder is fused silica powder with a silicon content ≥ 98%, the magnesium oxide content in the magnesia-zircon sand is 92%, and the titanium dioxide content in aluminum titanate is 45%.

[003...

Embodiment 3

[0038] The multi-component high-strength wear-resistant composite coating is composed of main materials and auxiliary materials, and the weight ratio of main materials and auxiliary materials is 78:20; the main materials and auxiliary materials are composed of the following raw materials in parts by weight:

[0039] Main ingredients, 17 parts of zirconium corundum fine powder with a particle size of 1-2.5 mm; 18 parts of zirconium corundum fine powder with a particle size of 0.5-1 mm; 10 parts of zirconium corundum fine powder with a particle size of 0.072-0.093 mm; 9 parts of kyanite; 5 parts of pure calcium aluminate cement; 2 parts of aluminum titanate; 5 parts of magnesia-zircon sand; 7 parts of silicon micropowder; 7 parts of alumina micropowder; Among them, the silica powder is fused silica powder with a silicon content ≥ 98%, the magnesium oxide content in the magnesia-zircon sand is 92%, and the titanium dioxide content in aluminum titanate is 45%.

[0040] Auxiliary m...

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Abstract

The invention relates to a refractory material and a preparation method thereof, particularly a multielement high-strength wear-resistant composite paint and a preparation method thereof. The multielement high-strength wear-resistant composite paint is composed of a main material and an auxiliary material, wherein the main material is composed of fused alumina zirconia fine powder, kyanite, pure calcium aluminate cement, aluminium titanate, magnesium zircon sand, silicon micropowder, aluminum oxide micropowder, sodium tripolyphosphate, calcium chromate and gahnite; and the auxiliary material is composed of phosphoric acid, aluminum hydroxide for inks, aluminum chloride, boron-iron-molybdenum alloy, borax and agglutinant. The multielement high-strength wear-resistant composite paint provided by the invention has the advantages of high compressive strength, higher hardness, high Mohs hardness, high density, favorable wear resistance, favorable erosion resistance, favorable scour resistance, high thermal shock stability and high binding property. When being used for a circulating fluid bed boiler, the multielement high-strength wear-resistant composite paint prolongs the service life of the paint coat, reduces the repair frequency and lowers the maintenance cost.

Description

technical field [0001] The invention relates to a refractory material and a preparation method thereof, in particular to a multi-component high-strength wear-resistant composite coating and a preparation method thereof. Background technique [0002] The construction system of the circulating fluidized bed boiler is complex, the construction volume is large, the flow rate of pulverized coal in the system pipeline is high, and the flow rate is large, so the performance requirements for refractory materials are particularly strict. The existing refractories used in circulating fluidized bed boilers are made of high-alumina clinker or white corundum raw materials, with high cement content, resulting in poor wear resistance, erosion resistance, erosion resistance and thermal shock stability. To meet the strict requirements of circulating fluidized bed boiler technology, frequent repairs or replacements are required, which affects the normal operation of circulating fluidized bed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 林国强
Owner YIXING GUOQIANG FURNACE IND
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