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High-stability coating material for hot-blast stove and preparation method thereof

A high-stability, hot-blast stove technology, used in anti-corrosion coatings, fire-retardant coatings, coatings, etc., can solve problems such as cracking, falling off, and affecting the service life of hot-blast stoves

Inactive Publication Date: 2016-12-07
WUHU CHANGQI FURNACE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On this basis, the coating of the hot blast stove tends to fall off and crack, which greatly affects the service life of the hot blast stove

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] The invention provides a kind of preparation method of the high stability coating that is used for hot blast furnace, comprises:

[0014] 1) Soaking river mud in acid solution, then filtering to get filter cake to obtain modified river mud;

[0015] 2) Disperse silica gel, sodium zirconate, rare earth oxide and modified river mud in an organic solvent under ultrasonic conditions, and then filter the filter cake to obtain the activated product;

[0016] 3) Organic silicon, acrylonitrile-butadiene-styrene copolymer, maleic anhydride, organic solvent, carbon fiber, attapulgite, cyclodextrin and activator are subjected to contact reaction under high pressure and airtight conditions to Produces highly stable coatings for hot blast stoves.

[0017] In step 1) of the present invention, the specification of the filter paper used for filtering can be selected in a wide range, but in order to improve the high temperature resistance and corrosion resistance of the high stability ...

Embodiment 1

[0030] 1) Soak the river mud in an acid solution with a pH of 4 (the weight ratio of the river mud to the acid solution is 100:400), and then filter through filter paper with a pore size of 40 μm to obtain a modified river mud;

[0031] 2) Mix silica gel, sodium zirconate, rare earth oxide (cerium oxide), modified river mud and organic solvent (acetophenone) in a weight ratio of 100:15:26:55:500, and heat Disperse for 6h at a frequency of 50MHz, then filter the filter cake to obtain the activated product;

[0032] 3) Silicone (methyltriethoxysilane), acrylonitrile-butadiene-styrene copolymer, maleic anhydride, organic solvent (cyclohexanone), carbon fiber, attapulgite, cyclodextrin Mix with the activator according to the weight ratio of 100:40:65:350:8:19:10:34, and conduct a contact reaction at 80°C, 1.8MPa and airtight conditions for 8 hours to obtain a highly stable Sexual coating A1.

Embodiment 2

[0034] 1) Soak the river mud in an acid solution with a pH of 3 (the weight ratio of the river mud to the acid solution is 100:300), and then filter through a filter paper with a pore size of 30 μm to obtain a filter cake to obtain a modified river mud;

[0035] 2) Mix silica gel, sodium zirconate, rare earth oxide (praseodymium oxide), modified river mud and organic solvent (acetophenone) in a weight ratio of 100:11:21:40:400, and heat the Disperse for 5h at a frequency of 40MHz, then filter the filter cake to obtain the activated product;

[0036] 3) Silicone (dimethyldiethoxysilane), acrylonitrile-butadiene-styrene copolymer, maleic anhydride, organic solvent (tert-amyl alcohol), carbon fiber, attapulgite, cyclopaste The essence and the activator are mixed according to the weight ratio of 100:35:60:250:5:15:7:30, and the contact reaction is carried out at 75°C, 1.5MPa and airtight conditions for 6 hours to obtain high Stabilization paint A2.

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PUM

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Abstract

The invention discloses a high-stability coating material for a hot-blast stove and a preparation method thereof. The preparation method comprises the steps: (1) soaking river mud in acid liquor, then, carrying out filtering, and taking a filter cake, so as to prepare modified river mud; (2) dispersing silica gel, sodium zirconate, rare-earth oxide and the modified river mud into an organic solvent under ultrasonic conditions, then, carrying out filtering, and taking a filter cake, so as to obtain an activated substance; (3) subjecting organosilicone, an acrylonitrile-butadiene-styrene copolymer, maleic anhydride, an organic solvent, carbon fibers, attapulgite, cyclodextrin and the activated substance to a contact reaction under high-pressure and closed conditions, thereby preparing the high-stability coating material for the hot-blast stove. The coating material prepared by the method has excellent high-temperature resistance and corrosion resistance, and then, the service life of the hot-blast stove can be prolonged.

Description

technical field [0001] The invention relates to a high-stability coating, in particular to a high-stability coating for a hot blast stove and a preparation method thereof. Background technique [0002] As a thermal power mechanical hot blast stove, it began to be widely used in my country in the late 1970s, and has become a replacement product for electric heat sources and traditional steam power heat sources in many industries. The most basic working principle of the hot blast stove is to pass cold air into the interlayer of the furnace to take the heat out of the interlayer to form hot air, and then heat the object through the hot air. [0003] At present, the main structure of the hot blast stove is all metal products. In order to protect the main structure and prevent it from being corroded, it is often necessary to brush the inner and outer surfaces of the main structure with a coating. Since coal products are burned in the combustion chamber of the hot blast stove, th...

Claims

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Application Information

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IPC IPC(8): C09D4/00C09D4/06C09D7/12C09D5/18C09D5/08
CPCC09D4/06C09D5/08C09D5/18C09D7/61C09D7/62C09D7/63C09D7/65C09D7/70C08F279/04C08F251/00
Inventor 萧鲲
Owner WUHU CHANGQI FURNACE
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