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Anti-slagging high-temperature wear-resistant composite material and preparation method thereof

A high-temperature wear-resistant and composite material technology, applied in the field of high-temperature wear-resistant materials, can solve the problems of difficult to achieve the same type and difficult to achieve, and achieve excellent bulk density and stability, acid and alkali resistance, and low apparent porosity. , The effect of resisting the erosion of thermal airflow

Pending Publication Date: 2020-10-13
YIXING GUOQIANG FURNACE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the feasible methods to reduce slagging of refractories mainly include: 1. Ensure good mixing of air and fuel. Reasonable and good aerodynamic conditions in the furnace can slow down the formation of slagging, but it is difficult to achieve the required input during boiler operation. The garbage is the same type of garbage, which is theoretically feasible but difficult to achieve in practice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A slagging-resistant high-temperature wear-resistant composite material is composed of the following components in mass percentage:

[0025] Fused zirconia corundum 1~3mm 13%

[0026] 0.4~1mm 21%

[0027] 0.065~0.088mm 15%

[0028] Aluminum dihydrogen phosphate 28%

[0029] Kyanite 0.074~0.084mm 10%

[0030] Pure calcium aluminate cement 5%

[0031] Silica powder 0.01~0.02mm, SiO 2 ≥98% 2%

[0032] ρ-alumina≤0.045mm 2%

[0033] Boron carbide powder 0.01~0.025mm, B 4 C≥98% 2%

[0034] Magnesium aluminum spinel 0.043~0.053 mesh, Al 2 o 3 ≥78% 1.6%

[0035] Sodium tripolyphosphate 0.37%

[0036] Explosion-proof fibers 0.03%.

[0037] When manufacturing, the above-mentioned materials are measured according to the mass ratio, fully stirred and mixed, and then packed into bags; before construction, water is mixed with the mixed materials and stirred to form a wet material before construction, as a waste incinerator lining, after It is stable after sintering, and...

Embodiment 2

[0039] A slagging-resistant high-temperature wear-resistant composite material is composed of the following components in mass percentage:

[0040] Fused tabular alumina 1~3mm 16%

[0041] 0.4~1mm 20%

[0042] 0.065~0.088mm 13%

[0043] Aluminum dihydrogen phosphate 22%

[0044] Kyanite 0.074~0.084mm 14%

[0045] Pure calcium aluminate cement 4%

[0046] Silica powder 0.01~0.02mm, SiO 2 ≥98% 4%

[0047] ρ-alumina≤0.045mm 1%

[0048] Aluminum nitride powder 0.01~0.025mm, AlN≥98% 2%

[0049] Magnesium aluminum spinel 0.043~0.053 mesh, Al 2 o 3 ≥78% 3.5%

[0050] Sodium tripolyphosphate 0.46%

[0051] Explosion-proof fibers 0.04%.

[0052] When manufacturing, the above-mentioned materials are measured according to the mass ratio, fully stirred and mixed, and then packed into bags; before construction, water is mixed with the mixed materials and stirred to form a wet material before construction, as a waste incinerator lining, after It is stable after sintering, and t...

Embodiment 3

[0054] A slagging-resistant high-temperature wear-resistant composite material is composed of the following components in mass percentage:

[0055] Fused zirconia corundum 1~3mm 14%

[0056] Fused zirconia corundum 0.4~1mm 20%

[0057] Fused tabular alumina 0.065~0.088mm 14%

[0058] Aluminum dihydrogen phosphate 29%

[0059] Kyanite 0.074~0.084mm 12%

[0060] Pure calcium aluminate cement 2%

[0061] Silica powder 0.01~0.02mm, SiO 2 ≥98% 3%

[0062] ρ-alumina≤0.045mm 2%

[0063] Silicon nitride powder 0.01~0.025mm, Si 3 N 4 ≥98% 1%

[0064] Magnesium aluminum spinel 0.043~0.053 mesh, Al 2 o 3 ≥78% 2.85%

[0065] Sodium tripolyphosphate 0.1%

[0066] Explosion-proof fibers 0.05%.

[0067] When manufacturing, the above-mentioned materials are measured according to the mass ratio, fully stirred and mixed, and then packed into bags; before construction, water is mixed with the mixed materials and stirred to form a wet material before construction, as a waste inciner...

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PUM

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Abstract

The invention discloses an anti-slagging high-temperature wear-resistant composite material. The material is prepared from corundum fine powder, aluminum dihydrogen phosphate, kyanite, pure calcium aluminate cement, silicon dioxide micro powder, rho-aluminum oxide, fine ceramic powder, magnesium aluminate spinel, sodium tripolyphosphate and explosion-proof fibers. The material has high strength and good wear resistance and can resist the abrasion of solid materials and the scouring of hot air flow; the composite material has excellent volume density, stability and acid and alkali resistance soas to resist erosion of acid and alkali substances in a furnace; the composite material has good thermal shock stability so as to resist damage of the temperature change of the furnace to the material; and the composite material has good erosion resistance so as to avoid cracking of the lining of the furnace due to erosion, so that the service life of the furnace is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of high-temperature wear-resistant materials, in particular to a high-temperature wear-resistant composite material suitable for wear-resistant, corrosion-resistant and slagging-resistant linings of garbage incinerators and a preparation method thereof. Background technique [0002] The waste incinerated by municipal waste-to-energy plants is usually a heterogeneous mixture of different compositions, including combustible plastics, moisture-rich domestic waste, wood, paper scraps, etc., as well as non-combustible bricks, rubble, metal, etc. There is also a big difference in terms of heat content. Due to the complex composition of municipal solid waste, after incineration, the ash contained in the generated flue gas is sticky in nature, and it is easy to adhere to the surface of the heating surface and form a tight ash layer on the furnace wall. Gradually accumulating thicker and thicker is what we call slag...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/101C04B14/06C04B14/30C04B14/32C04B22/16
CPCC04B35/101C04B14/303C04B14/304C04B14/062C04B22/16C04B14/323C04B14/326C04B14/328C04B14/306C04B2235/3418C04B2235/3821C04B2235/3865C04B2235/3873C04B2235/3246C04B2235/3225C04B2235/3222C04B2235/447C04B2235/96C04B2235/3463
Inventor 林国强
Owner YIXING GUOQIANG FURNACE IND
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