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Kaolin-modified paint for hot-blast furnaces and preparation method thereof

A hot blast stove and Guanyin technology, applied in anti-corrosion coatings, fireproof 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 Guanyin clay modified coating for hot blast stove, comprising:

[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-ethylene-styrene copolymer, maleic anhydride, organic solvent, carbon fiber, Guanyin soil, cyclodextrin and activator are subjected to contact reaction under high pressure and airtight conditions to obtain Avalokitesvara modified 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 coa...

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-ethylene-styrene copolymer, maleic anhydride, organic solvent (cyclohexanone), carbon fiber, Guanyin clay, cyclodextrin and activator Mix according to the weight ratio of 100:52:65:350:8:30:10:34, and conduct a contact reaction at 80°C, 1.8MPa and airtight conditions for 8 hours to prepare Guanyin clay modified coating A1 for hot blast stove .

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-ethylene-styrene copolymer, maleic anhydride, organic solvent (tert-amyl alcohol), carbon fiber, Guanyin clay, cyclodextrin and activated The materials were mixed according to the weight ratio of 100:50:60:250:5:23:7:30, and the contact reaction was carried out at 75°C, 1.5MPa and airtight conditions for 6 hours to prepare the Guanyin clay modified coating for hot stove A2.

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PUM

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Abstract

The invention discloses a kaolin-modified paint for hot-blast furnaces and a preparation method thereof. The preparation method comprises the following steps: 1) immersing river mud in acid liquor, filtering, and taking the filter cake to obtain modified river mud; 2) dispersing silica gel, sodium zirconate, rare-earth oxides and modified river mud in an organic solvent under ultrasonic conditions, filtering, and taking the filter cake to obtain an activated substance; and 3) carrying out contact reaction on organic silicon, an acrylonitrile-ethylene-styrene copolymer, maleic anhydride, an organic solvent, carbon fibers, kaolin, cyclodextrin and the activated substance under high-pressure closed conditions to obtain the kaolin-modified paint for hot-blast furnaces. The paint prepared by the method has excellent high temperature resistance and corrosion resistance, thereby prolonging the service life of the hot-blast furnace.

Description

technical field [0001] The invention relates to a high-stability coating, in particular to a Guanyin soil modified 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 st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D133/20C09D5/08C09D7/12
CPCC09D183/04C08L2201/08C08L2205/03C09D5/08C09D5/18C09D7/40C09D7/61C09D7/65C09D7/70
Inventor 萧鲲
Owner WUHU CHANGQI FURNACE
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