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High-temperature counter radiation resistant inorganic coating and preparation method thereof

An inorganic coating and anti-radiation technology, applied in fireproof coatings, alkali metal silicate coatings, coatings, etc., can solve the problems of affecting the use effect and service life, poor thermal shock resistance, cracking and peeling of coatings, etc. Vibrant colors, high bond strength and high hiding power

Inactive Publication Date: 2010-06-30
上海乐恒石油化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Usually, the heating furnaces used in the ceramic industry and the petrochemical industry mostly use silicon-aluminum refractory materials. These materials have poor thermal shock resistance, poor wear resistance, and are easy to embrittle and fall off. When the furnace is heated up, a large amount of heat is absorbed and lost, and the energy extremely low utilization
[0004] In recent years, the application of energy-saving and high-temperature radiation-resistant inorganic coatings in kilns has been widely recognized. However, due to the difference in thermal expansion between the materials in the coating and the base material during use, it is easy to cause coating damage during the heating and cooling process in the kiln. The cracks fall off, which affects the use effect and service life
On the other hand, some current radiant coatings have low emissivity, unstable performance, and performance decay after a period of use

Method used

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  • High-temperature counter radiation resistant inorganic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Coating composition ratio:

[0017] 15 parts of cobalt oxide, 7 parts of zirconia, 9 parts of alumina, 2.5 parts of silicon powder, 11 parts of silicon carbide, 4 parts of chromium oxide, 3.5 parts of manganese oxide, 3 parts of corundum, 6 parts of sodium silicate, 7.5 parts of aluminum dihydrogen phosphate 3 parts, 3 parts of quartz powder, 3 parts of feldspar powder, 15 parts of phosphorus pentoxide, 3 parts of chromite, 0.6 part of zircon sand, 1 part of cerium oxide, 3.5 parts of graphite, 0.7 part of boron oxide, and 0.3 part of clay.

[0018] The paint is prepared according to the proportion of the formula, and the product is obtained after grinding, soaking, heating reaction, stirring, mixing, filtering, and barreling.

[0019] Thermal shock stability: According to the JB / T 3648.1-1994 standard, under the condition of 900℃×air cooling, no less than 15 times.

[0020] Refractoriness: according to GB / T 7322-2007 standard, not lower than 1800℃

[0021] Bulk densi...

Embodiment 2

[0024] Coating composition ratio:

[0025] 10 parts of cobalt oxide, 6 parts of zirconia, 5 parts of aluminum oxide, 3 parts of silicon powder, 16 parts of silicon carbide, 5 parts of chromium oxide, 4 parts of manganese oxide, 5 parts of corundum, 7 parts of sodium silicate, 5 parts of aluminum dihydrogen phosphate 1 part, 4 parts of quartz powder, 3 parts of feldspar powder, 16 parts of phosphorus pentoxide, 1 part of chromite, 0.6 part of zircon sand, 0.6 part of cerium oxide, 3.5 parts of graphite, 0.7 part of boron oxide, 0.3 part of clay, each The particle size of the solid component is not less than 300 mesh.

[0026] The ingredients are listed according to the formula ratio, and the product is obtained after grinding, soaking, heating reaction, stirring, mixing, filtering, and barreling.

[0027] Thermal shock stability: According to the JB / T 3648.1-1994 standard, under the condition of 900℃×air cooling, no less than 16 times.

[0028] Refractoriness: according to GB...

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Abstract

The invention relates to an energy-saving high-temperature counter radiation resistant inorganic coating for coating the liner of a kiln and a preparation method thereof. The coating mainly comprises oxides, such as cobalt oxide, zirconium oxide powder, aluminum oxide and chromic oxide, and silicon powder, silicon carbide, sodium silicate, aluminium dihydrogen phosphate, silica flour, graphite powder, boron oxide and other components and is prepared by grinding, soaking, heating reaction, stirring and mixing. The coating has high thermal shock resistance, high radiation utilization rate, high corrosion resistance, high cracking resistance, high oxidization resistance and high thermal stability. The inorganic coating of the invention has the advantages of allowing for normal construction without making special modification of the basal body of the kiln, along with small investment, quick response, no toxicity, no corrosion and desirable social and economic benefits.

Description

technical field [0001] The invention belongs to the field of inorganic coatings, in particular to an energy-saving, high-temperature and radiation-resistant inorganic coating coated on the inner lining of a kiln and a preparation method thereof. Background technique [0002] Industrial furnaces are the largest energy consumers in my country, accounting for about 25-40% of the total energy consumption, while the average thermal efficiency of furnaces is only about 30%. Low thermal efficiency of industrial furnaces is a common problem at home and abroad. An energy-saving new technology, coating energy-saving radiant paint on the lining of the kiln, radiating the heat in the kiln to the heated product as much as possible, will make full use of energy to achieve the purpose of energy saving. [0003] Usually, the heating furnaces used in the ceramic industry and the petrochemical industry mostly use silicon-aluminum refractory materials. These materials have poor thermal shock re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D1/02C09D5/00C09D5/18
Inventor 张春雨
Owner 上海乐恒石油化工集团有限公司
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