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Wear-resistant coating mixture for waste heat power generation pipelines

A technology of waste heat power generation and coating material, which is applied in the field of unshaped refractory materials, can solve the problems of high viscosity, volume expansion, and poor erosion resistance, and achieves high bulk density, good thermal shock resistance, high compressive strength and bending resistance. the effect of strength

Active Publication Date: 2014-04-09
JIANGSU HENGNAI FURNACE CHARGE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphate combined smears have high viscosity and good plasticity, but their working time is short, generally less than 15 minutes, and the smear construction requires a long working time, and phosphate combined smears are prone to volume expansion after construction, which affects the use; The cement-bonded smear material has poor plasticity and is not resistant to erosion. The general service life is about 12 months

Method used

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  • Wear-resistant coating mixture for waste heat power generation pipelines
  • Wear-resistant coating mixture for waste heat power generation pipelines
  • Wear-resistant coating mixture for waste heat power generation pipelines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A wear-resistant smearing material for waste heat power generation pipelines, the components of which include:

[0026] Brown corundum with a particle size of 3-5mm 15%;

[0027] High alumina bauxite with a particle size of 1-3mm 25%;

[0028] High alumina bauxite with a particle size of 0.088-1mm 20%;

[0029] Bauxite fine powder 11%;

[0030] Silica powder 3%;

[0031] α-Al 2 o 3 Micropowder 6%;

[0032] Guangxi white mud 2%;

[0033] Bentonite 2%;

[0034] High alumina cement 16%;

[0035] The sum of the contents of the above components is 100%.

[0036] The above-mentioned wear-resistant smear material for waste heat power generation pipelines also includes sodium tripolyphosphate and sodium carboxymethylcellulose in terms of mass ratio, and the specific content ratio is: the total content of the above-mentioned components: sodium tripolyphosphate: Sodium carboxymethyl cellulose is 1:0.001:0.006.

[0037] Al in the brown corundum 2 o 3 ≥94%, Al in high ...

Embodiment 2

[0039] A wear-resistant smearing material for waste heat power generation pipelines, the components of which include:

[0040] Brown corundum with a particle size of 3-5mm 30%;

[0041] High alumina bauxite with a particle size of 1-3mm 15%;

[0042] High alumina bauxite with a particle size of 0.088-1mm 15%;

[0043] Bauxite fine powder 8%;

[0044] Silica powder 3%;

[0045] α-Al 2 o 3 Micropowder 4%;

[0046] Guangxi white mud 2%;

[0047] Bentonite 2%;

[0048] ρ-Al 2 o 3 3%;

[0049] High alumina cement 18%.

[0050] The index content of each component in the wear-resistant smear is the same as that in Example 1. When using it, it is only necessary to add 7% water of the total amount of the material, and then stir for 5-8 minutes to make the material evenly mixed.

Embodiment 3

[0052] A wear-resistant smearing material for waste heat power generation pipelines, the components of which include:

[0053]Brown corundum with a particle size of 3-5mm 25%;

[0054] High alumina bauxite with a particle size of 1-3mm 17%;

[0055] High alumina bauxite with a particle size of 0.088-1mm 18%;

[0056] Bauxite fine powder 8%;

[0057] Silica powder 3%;

[0058] α-Al 2 o 3 Micropowder 5%;

[0059] Guangxi white mud 3%;

[0060] Bentonite 2%;

[0061] ρ-Al 2 o 3 3%;

[0062] High alumina cement 16%;

[0063] The sum of the contents of the above components is 100%.

[0064] The above-mentioned wear-resistant smear material for waste heat power generation pipelines, in terms of mass ratio, also includes sodium tripolyphosphate, sodium carboxymethylcellulose and coagulant KAD-20, and the specific content ratio is: the total content of the above components Quantity: sodium tripolyphosphate: sodium carboxymethylcellulose: coagulant KAD-...

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Abstract

The invention relates to the technical field of unshaped refractory materials, particularly a wear-resistant coating mixture for waste heat power generation pipelines, which comprises brown corundum, high-aluminum alumina, alumina fine powder, silicon micropowder, alpha-Al2O3 micropowder, Gangxi white clay, bentonite, high-aluminum cement, rho-Al2O3, sodium tripolyphosphate, sodium carboxymethyl cellulose and setting accelerator KAD-20. The wear-resistant coating mixture has the advantages of favorable thermal shock resistance, scour resistance and volume stability, and the service period is up to more than 24 months.

Description

technical field [0001] The invention relates to the technical field of monolithic refractory materials, in particular to a wear-resistant smear material for waste heat power generation pipelines. Background technique [0002] At present, there are mainly two types of smears used in cement kiln waste heat power generation pipelines: phosphate-bonded smears and cement-bonded smears. Phosphate-combined coatings have high viscosity and good plasticity, but their working time is short, generally less than 15 minutes, and the application requires a long working time, and the phosphate-combined coatings are prone to volume expansion after construction, which affects the use; Cement-bonded smears have poor plasticity and are not resistant to erosion. The general service life is about 12 months. Contents of the invention [0003] The technical problem to be solved by the present invention is: aiming at the deficiencies in plasticity, working time, erosion resistance and volume sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 韩亚伟
Owner JIANGSU HENGNAI FURNACE CHARGE GRP
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