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High-temperature-resisting coating and its production

A technology of high-temperature resistant coatings and formulations, applied in the field of coatings, can solve the problems of inability to meet the requirements of corrosion resistance, expensive imported coatings, and unsuitability for small and medium-sized enterprises, achieve great development prospects, simple and convenient preparation methods, and meet the requirements of corrosion resistance Effect

Inactive Publication Date: 2007-01-17
金柏林 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most commonly used is a high-temperature-resistant coating with titanium oxide as the main component, but because the coating cannot meet the anti-corrosion requirements, after two days of production and operation, the longest operation time is only about 10 days. The phenomenon of being corroded and scrapped and forced to stop work not only affects production, but also greatly increases production costs
Although there is an imported high-temperature-resistant coating (boron nitride coating produced by Pyrotek in the United States) that can make the industrial furnace for melting aluminum run normally for 3 months, the imported coating is expensive and does not meet the needs of small and medium-sized enterprises.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of solid material: Weigh 10 kg of yttrium oxide, 15 kg of zirconia, 22 kg of rare earth mixture of lanthanum cerium praseodymium neodymium concentrate, 2 kg of glass powder, 48 kg of sodium silicate and 3 kg of bentonite, and use 80 ℃ hot water Heat and stir evenly to obtain solid material.

[0032] The preparation of liquid material: take by weighing 8 kg of borax, 48 kg of water glass (Bomer degree 40), 4 kg of sodium hydroxide and 40 kg of water, and stir them into a solution to obtain the liquid material.

[0033] Mix and stir the prepared solid material and liquid material to obtain a slightly yellow paste paint, which is then loaded into barrels. The properties of the paint tested are shown in Table 1.

[0034] Stir the paint with a small amount of water to adjust it to the required consistency, and apply it on the inner wall of the iron crucible with a thickness of about 2mm. After coating, let it dry naturally at room temperature for 48 hours, and t...

Embodiment 2

[0036] Preparation of solid material: Weigh 19 kg of yttrium oxide, 10 kg of zirconia, 15 kg and 4 kg of rare earth mixtures of lanthanum cerium praseodymium neodymium enrichment and terbium dysprosium enrichment respectively, 3 kg of glass powder, and 44 kg of sodium silicate. kg and 5 kg of attapulgite, heated with 50°C hot water, and evenly mixed to obtain a solid material.

[0037] Preparation of liquid material: Weigh 10 kg of borax, 40 kg of water glass (Bomer degree 40), 5 kg of sodium hydroxide and 45 kg of water, and stir them into a solution to obtain the liquid material.

[0038] Mix and stir the prepared solid material and liquid material to obtain a slightly yellow paste paint, which is then loaded into barrels. The properties of the paint tested are shown in Table 1.

Embodiment 3

[0040] Preparation of solid material: Weigh 25 kg of yttrium oxide, 14 kg of zirconia, 13 kg of rare earth mixture of thulium, ytterbium and lutetium enrichment, 4 kg of glass powder, 40 kg of sodium silicate, 2 kg of bentonite and 2 kg of montmorillonite , heated with steam at 100°C, and stirred evenly to obtain a solid material.

[0041] Preparation of the liquid material: Take 5 kg of borax, 55 kg of water glass (Bomer degree 40), 2 kg of sodium hydroxide and 38 kg of water, and stir to form a solution to obtain the liquid material.

[0042] Mix and stir the prepared solid material and liquid material to obtain a slightly yellow paste paint, which is then loaded into barrels. The properties of the paint tested are shown in Table 1.

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Abstract

A high-temperature-resisting coating and its production are disclosed. The coating consists of solid material and liquid material. The solid material comprises yttrium oxide, jargonia, rare-earth mixture, glass flour, sodium silicate and active clay and the liquid material consists of borax, sodium hydrate, water glass and water. It has better high-temperature-resisting, oxidation-resisting, anti-corrosive performances and excellent adhesion. It can be used for metal industrial furnace coating.

Description

technical field [0001] The invention relates to a coating, in particular to a high-temperature-resistant coating suitable for a nonferrous metal smelting furnace and a preparation method thereof. Background technique [0002] At present, industrial furnaces for melting non-ferrous metals used by some medium and small enterprises, such as industrial furnaces for melting aluminum or aluminum alloys, generally use iron crucibles with low production costs. When the melting temperature is as high as 1200 ° C, the molten aluminum The corrosion of iron crucibles is quite serious. In order to prevent corrosion, people often coat a layer of high temperature resistant paint on the inner surface of iron crucibles. The most commonly used is a high-temperature-resistant coating with titanium oxide as the main component, but because the coating cannot meet the anti-corrosion requirements, after two days of production and operation, the longest operation time is only about 10 days. The ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/18
Inventor 金柏林
Owner 金柏林
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