CN103524138A - Heat radiation coating for steel heating furnace - Google Patents
Heat radiation coating for steel heating furnace Download PDFInfo
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- CN103524138A CN103524138A CN201310532363.5A CN201310532363A CN103524138A CN 103524138 A CN103524138 A CN 103524138A CN 201310532363 A CN201310532363 A CN 201310532363A CN 103524138 A CN103524138 A CN 103524138A
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Abstract
The invention discloses a heat radiation coating for a steel heating furnace. The heat radiation coating for the steel heating furnace comprises a base material, an additive, an adhesive, a plasticizer and a solvent. The base material and the additive are selected from five or the whole of zinc-aluminum spinel powder, manganese-alumina spinel powder, ilmenite powder, boron carbide, ferric oxide and silica powder. The adhesive is formed by liquid aluminum dihydrogen phosphate and water in a mixed mode. The heat radiation coating for the steel heating furnace comprises, by weight, 6%-75% of base material and additive, 5%-29% of adhesive, 0.5%-3% of plasticizer and the balance solvent. The heat radiation coating for the steel heating furnace has the advantages that the work temperature range is wide, the heat radiation coating can be applied at the temperature of higher than 1400 DEG C, and the highest application temperature of the heat radiation coating can reach nearly 1800 DEG C; the heat radiation coating is suitable for various matrixes, the adhesive force of the heat radiation coating to the matrixes is strong, the heat radiation coating is suitable for multiple acid-base atmospheres, the durability is good, the heat impact resistance is strong, the energy use heat efficiency is improved, the temperature of each matrix coated with the coating is reduced, the abrasion-resistant performance and the corrosion-resistant performance are good, the influence to the environment is small, and use is convenient.
Description
Technical field
The present invention relates to a kind of iron and steel process furnace thermal radiation coating, more precisely, relate to a kind of high emissivity coating that can improve furnace thermal efficiency, can be applicable to various types of process furnace of steel industry.
Background technology
Thermal radiation coating is applied in a lot of industries; it can be used as refractory materials and uses the heat absorption surface at various industrial furnaces; utilize the principle of coating to thermal-radiating high-absorbility and high emissivity; improve the absorption of High Temperature Furnaces Heating Apparatus kiln lining body to furnace flame heat; improve the heat exchange condition of burner hearth, body of heater heat radiation is declined, increased the thermo-efficiency of energy utilization; burner hearth substrate material is had to good provide protection simultaneously, extend stove work-ing life, reduce maintenance workload.In addition,, by strengthening Radiative heat transfer in furnace, can also improve the homogeneity of temperature field in furnace and the heating quality of heated object.
Iron and steel process furnace is comprised of high temperature resistant base-material, high emissivity additive and tackiness agent conventionally with thermal radiation coating.Normally used high temperature resistant base-material has zirconium white, zirconium silicate, aluminum oxide, pure aluminium silicate, silicon-dioxide etc.High emissivity additive is most typical is transition metal oxide, for example, and chromic oxide (Cr
2o
3), cobalt oxide (CoOx), ferric oxide (Fe
2o
3) and nickel oxide (NiO).In some coating, high temperature resistant base-material and high emissivity additive are same material.
When designing with thermal radiation coating, iron and steel process furnace should consider following factor: under high temperature, there is metastable high emissivity; Suitable particle size; With the thermal expansion matching of matrix, mechanical bond, Chemical bond; The hot properties of coating, erosion resistance and wear resistance; Under normal temperature, there are good sticking power and rheological, are easy to construction; Last cated cost also, if the cost of coating far away higher than the energy recovery of plan, so this coating is without any economic implications.
Researched and developed at present the iron and steel process furnace thermal radiation coating of multiple formulations and purposes both at home and abroad.Yet in coatings applications during to higher temperature, or while carrying out work for a long time under multicomponent atmosphere, the performance of coating can be subject to great impact, recoating efficiency declines and even lost efficacy.
Summary of the invention
The object of this invention is to provide a kind of can work for a long time in temperature over 1400 ℃ under multicomponent atmosphere, be easy to construction (can use spray gun to spray), economical and practical iron and steel process furnace thermal radiation coating.This coating can be applicable to oil, chemical industry, metallurgical furnace kiln, and can improve the thermo-efficiency of stove.
For realizing object of the present invention, adopt following technical scheme: a kind of iron and steel process furnace thermal radiation coating, is characterized in that: comprise base-material, additive, tackiness agent, softening agent and solvent, wherein:
Described base-material and additive are selected from gahnite powder, manganese-aluminium spinelle powder, ilmenite powder, norbide, ferric oxide, silicon powder five kinds or all;
Described tackiness agent forms after being tempered by liquid phosphoric acid aluminum dihydrogen, between the density 1.1-1.3 of the rear tackiness agent of mediation.
Preferably, described softening agent is selected from yellow starch gum and/or carboxymethyl cellulose.
Preferably, described solvent is selected from one or both of silicon sol, water.
Preferably, the weight percent of described base-material and additive is 5%-78%, and the weight percent of tackiness agent is 5%-30%, and the weight percent of softening agent is 0.5%-3%, and surplus is solvent.
Preferably, described high emissivity additive is nano material.
Coating of the present invention contains gahnite powder, makes not only to improve the emittance of coating, and coating can be used for a long time in acid-basicity atmosphere.Additive of the present invention is nano material, and specific surface area is large, and the ability that absorbs various photons is strong, has further increased the emittance of coating.Coating of the present invention is made by Powdered base-material and additive, softening agent, liquid adhesive and solvent, and brushing or spray in the matrix of stove or on metallic conduit when low temperature can be used after dry by 100 ℃, constructs simple and convenient.Coating of the present invention can used at the temperature of 1400 ℃, and maximum operation (service) temperature can reach nearly 1800 ℃.In addition, iron and steel process furnace of the present invention is applicable to various matrix with thermal radiation coating, strong adhesion to matrix, is applicable to soda acid multicomponent atmosphere, and long-term durability is good, heat shock resistance ability to bear is strong, improve energy utilization thermo-efficiency, reduce substrate temperature, wear-resisting and good corrosion resistance, little to environmental influence, easy to use.
Embodiment
For the technique effect easy to understand that makes technical problem to be solved by this invention, the technical scheme of taking, obtains, existing the present invention is further illustrated in conjunction with the embodiments.
Embodiment 1 gahnite powder 20%, manganese-aluminium spinelle powder 15%, ilmenite powder 10%, norbide 5%, ferric oxide 3%, silicon powder 2%, tackiness agent 25%, yellow starch gum 0.5%, all the other are solvent, fully mixing can make coating of the present invention.
Embodiment 2
Gahnite powder 30%, manganese-aluminium spinelle powder 5%, ilmenite powder 10%, norbide 5%, ferric oxide 3%, silicon powder 2%, tackiness agent 25%, yellow starch gum 0.5%, all the other are solvent, fully mixing can make coating of the present invention.
Embodiment 3
Gahnite powder 25%, manganese-aluminium spinelle powder 10%, ilmenite powder 10%, norbide 5%, ferric oxide 3%, silicon powder 2%, tackiness agent 25%, yellow starch gum 0.5%, all the other are solvent, fully mixing can make coating of the present invention.
Abrasion loss test:
Get respectively the sample that the various embodiments described above obtain, on spray refractory standard sample, and be heated to 1400 ℃ of sintering, and get respectively control sample and do not carry out spray treatment. adopt normal temperature wear resistant instrument to detect.After tested, the weighted average loss after the sample wearing and tearing of spraying sample is 0.5%, and the contrast exemplar quality average loss of spraying is not 5 %, so through contrast test, the resistance to abrasion of the test sample of use coating is than not spraying the high 10 times of left and right of sample.
Each cited raw material of the present invention can be realized the present invention, at this, does not enumerate; The bound value of each raw material of the present invention, with and interval value, can realize the present invention, at this, do not enumerate.
Claims (6)
1. an iron and steel process furnace thermal radiation coating, it is characterized in that: comprise base-material, additive, tackiness agent, softening agent and solvent, wherein: described base-material and additive are selected from gahnite powder, manganese-aluminium spinelle powder, ilmenite powder, norbide, ferric oxide, silicon powder five kinds or all; Described tackiness agent is tempered and is formed by liquid phosphoric acid aluminum dihydrogen.
2. iron and steel process furnace thermal radiation coating according to claim 1, is characterized in that: described softening agent is selected from yellow starch gum and/or carboxymethyl cellulose.
3. iron and steel process furnace thermal radiation coating according to claim 1, is characterized in that: described solvent is selected from one or both of silicon sol, water.
4. iron and steel process furnace thermal radiation coating according to claim 1, is characterized in that: described tackiness agent adds water mixing by aluminium dihydrogen phosphate and forms; Between the density 1.1-1.3 of the rear tackiness agent of mediation.
5. iron and steel process furnace thermal radiation coating according to claim 1, it is characterized in that: the weight percent of described base-material and additive is 6%-75%, the weight percent of tackiness agent is 5%-29%, and the weight percent of softening agent is 0.5%-3%, and surplus is solvent.
6. iron and steel process furnace thermal radiation coating according to claim 1, is characterized in that: described high emissivity additive is nano material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310532363.5A CN103524138A (en) | 2013-11-01 | 2013-11-01 | Heat radiation coating for steel heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310532363.5A CN103524138A (en) | 2013-11-01 | 2013-11-01 | Heat radiation coating for steel heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103524138A true CN103524138A (en) | 2014-01-22 |
Family
ID=49926552
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310532363.5A Pending CN103524138A (en) | 2013-11-01 | 2013-11-01 | Heat radiation coating for steel heating furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105924184A (en) * | 2016-04-20 | 2016-09-07 | 浙江大学 | High-temperature infrared radiant coating used for industrial furnace and preparation method thereof |
| WO2017157278A1 (en) * | 2016-03-18 | 2017-09-21 | 广州众煌电子科技有限公司 | Metal smelting furnace |
| CN109158586A (en) * | 2018-09-26 | 2019-01-08 | 运城市森阳新材料有限公司 | It is a kind of for power plant air and flue system and the high-temp wearproof lining material of pulverized coal preparation system and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252691A (en) * | 1977-11-22 | 1981-02-24 | Elektroschmelzwerk Kempten Gmbh | Neutron absorber based on boron carbide and carbon and a process for their production |
| CN103553547A (en) * | 2013-10-31 | 2014-02-05 | 张婷 | Heat-radiation coating material for ceramic kiln |
-
2013
- 2013-11-01 CN CN201310532363.5A patent/CN103524138A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252691A (en) * | 1977-11-22 | 1981-02-24 | Elektroschmelzwerk Kempten Gmbh | Neutron absorber based on boron carbide and carbon and a process for their production |
| CN103553547A (en) * | 2013-10-31 | 2014-02-05 | 张婷 | Heat-radiation coating material for ceramic kiln |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017157278A1 (en) * | 2016-03-18 | 2017-09-21 | 广州众煌电子科技有限公司 | Metal smelting furnace |
| CN105924184A (en) * | 2016-04-20 | 2016-09-07 | 浙江大学 | High-temperature infrared radiant coating used for industrial furnace and preparation method thereof |
| CN105924184B (en) * | 2016-04-20 | 2019-02-22 | 浙江大学 | A kind of industrial kiln Temperature Infra red Radiation Coatings and preparation method thereof |
| CN109158586A (en) * | 2018-09-26 | 2019-01-08 | 运城市森阳新材料有限公司 | It is a kind of for power plant air and flue system and the high-temp wearproof lining material of pulverized coal preparation system and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |