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Composite coating for fiber inner lining and preparation method thereof

A composite coating and lining technology, applied in the direction of coating, etc., can solve the problems of ineffective radiation of heat, easy pulverization of refractory fibers, and low thermal radiation rate of ceramic fibers

Active Publication Date: 2021-06-22
河南省锅炉压力容器安全检测研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the refractory fiber used as the inner city of the kiln can reduce the heat loss through the inner lining to a certain extent, but the heat radiation rate of the ceramic fiber is low, so that the heat cannot be effectively radiated into the furnace, and the heat utilization rate is low; and , refractory fiber is easy to pulverize, has poor corrosion resistance, and has a short service life as a kiln lining

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of composite coating for fiber inner lining, represented by weight percentage, the raw material composition of described composite coating for fiber inner lining is: 30% of zirconia micropowder, 8% of activated alumina micropowder, 18% of quartz sand micropowder, cordieri 5% stone powder, 3% mullite powder, 3% silicon powder, 22% radiation powder, 10% aluminum sol, 0.6% sodium polyacrylate, 0.4% simethicone; plus 30% of the total weight of the above raw materials.

[0028] The radiation powder is composed of the following raw materials in parts by weight: 26 parts of nano-silicon carbide, 12 parts of iron oxide micropowder, 6 parts of nickel oxide micropowder, 5 parts of manganese oxide micropowder, 3 parts of cobalt oxide micropowder, 2 parts of titanium diboride micropowder .

[0029] The preparation method of composite paint for above-mentioned fiber lining, comprises the following steps:

[0030] (1) take by weighing each component according to the raw mater...

Embodiment 2

[0035] A kind of composite coating for fiber inner lining, represented by weight percentage, the raw material composition of described composite coating for fiber inner lining is: 25% of zirconia micropowder, 5% of activated alumina micropowder, 18% of quartz sand micropowder, cordieri 8% of stone powder, 5% of mullite powder, 2% of silicon powder, 25% of radiation powder, 10% of aluminum sol, 1% of sodium polyacrylate, and 1% of simethicone; plus water accounting for 35% of the total weight of the above raw materials.

[0036] The raw material composition of the radiation powder is the same as in Example 1.

[0037] The preparation method of the above-mentioned corrosion-resistant nano-coating is the same as that of Example 1.

Embodiment 3

[0039] A kind of composite coating for fiber inner lining, represented by weight percentage, the raw material composition of described composite coating for fiber inner lining is: 35% of zirconia micropowder, 6% of activated alumina micropowder, 15% of quartz sand micropowder, cordieri 6% of stone powder, 4% of mullite powder, 6% of silicon powder, 15% of radiation powder, 12% of aluminum sol, 0.8% of sodium polyacrylate, and 0.2% of simethicone; plus 25% of the total weight of the above raw materials. Water.

[0040] The radiation powder is composed of the following raw materials in parts by weight: 20 parts of nano-silicon carbide, 15 parts of iron oxide micropowder, 3 parts of nickel oxide micropowder, 6 parts of manganese oxide micropowder, 4 parts of cobalt oxide micropowder, 3 parts of titanium diboride micropowder .

[0041] The preparation method of the above-mentioned corrosion-resistant nano-coating is the same as that of Example 1.

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Abstract

The invention discloses a composite coating for fiber inner lining and a preparation method thereof. The composite coating for fiber inner lining is composed of raw materials: 25%-35% of zirconia micropowder, activated alumina micropowder 5%~10%, quartz sand powder 15%~20%, cordierite powder 3%~8%, mullite powder 3%~5%, silicon powder 2%~6%, radiation powder 15%~25%, 8% to 12% of binder, 0.1% to 1% of dispersant, 0.1% to 1% of defoamer; plus solvent accounting for 25% to 35% of the total weight of the above raw materials. The composite coating for fiber lining has high emissivity, the infrared emissivity can reach above 0.85, and the energy-saving effect is remarkable; moreover, it has strong binding force with fiber lining, compact structure, strong corrosion resistance, and the coating does not crack or It can work stably for a long time at a high temperature of 1000‑1500 °C and has a long service life.

Description

technical field [0001] The invention belongs to the technical field of energy-saving coatings, and in particular relates to a composite coating for fiber inner lining and a preparation method thereof. Background technique [0002] The high-temperature industrial kiln industry is the main energy consumption industry, and the annual energy consumption accounts for about 25%-40% of the country's total energy consumption. However, the average thermal efficiency of industrial kilns is only about 32%. The main reason for the low utilization rate of energy consumption of industrial kilns is that the heat dissipates outward through the lining and outer wall of the kiln on the one hand, resulting in heat loss; into the furnace, resulting in low heating efficiency and low heat utilization. In recent years, with the increasingly serious energy crisis, energy saving and consumption reduction have become an urgent and important research topic in the high temperature industrial kiln indu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/00
CPCC04B35/4885C04B35/622C04B35/66C04B2235/3206C04B2235/3218C04B2235/3262C04B2235/3272C04B2235/3275C04B2235/3279C04B2235/3418C04B2235/3463C04B2235/3481C04B2235/3826C04B2235/3891C04B2235/428C04B2235/5436C04B2235/96C04B2235/9607C04B2235/9692
Inventor 王发现王巍王霄鑫刘鹏李文超陈东辉孙晓强李红凌王龙张焱朱新雨
Owner 河南省锅炉压力容器安全检测研究院