CN101555369A - Method for preparing blackening agent used for high-temperature infrared energy-conserving paint - Google Patents
Method for preparing blackening agent used for high-temperature infrared energy-conserving paint Download PDFInfo
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- CN101555369A CN101555369A CNA200910084738XA CN200910084738A CN101555369A CN 101555369 A CN101555369 A CN 101555369A CN A200910084738X A CNA200910084738X A CN A200910084738XA CN 200910084738 A CN200910084738 A CN 200910084738A CN 101555369 A CN101555369 A CN 101555369A
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- oxide
- blackening agent
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- infrared energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention provides a method for preparing a blackening agent used for high-temperature infrared energy-conserving paint, belonging to the refractory material field. The paint contains oxides such as powdered ferrochromium ore, manganese oxide, cobaltous oxide, copper oxide and nickel oxide and the like with high radiance. The method comprises the steps of: thoroughly milling and uniformly mixing the materials according to proportion; briquetting the mixture or directly sintering the mixture at high temperature and carrying out insulation for a certain time; and executing re-milling till the specific size is realized so as to obtain the required powder. The blackening agent is mainly applied to paints used for inner walls of various mill furnaces and heat-treatment furnaces of high alumina bricks, mullite bricks and metals; emissivity thereof is stable in long-term use; and the serviceability temperature can reach 1600 DEG C.
Description
Technical field
The invention provides a kind of high-temperature coatings with infrared high emissivity powder, can be widely used in high temperature resistant infrared coating technical field.
Background technology
Radiative transfer plays a part very important in high temperature heat transfer.The high temp, infrared radiation energy-saving coatings promptly is by changing the slin emissivity of heat transfer component, promote radiative transfer, reducing heat waste, thereby play energy-conserving action.What play a major role in the high temp, infrared radiation energy-saving coatings is the powder that has high radiant rate in infrared fluctuation, i.e. blackening agent.With several coating is example, and the HRC radiation paint that the Japan company of going up day produces is a blackening agent by chromic oxide, ferric oxide etc., but the concrete composition of blackening agent is unclear.The Encoat infrared radiation coating of the multinational joint operation of Europe Australia contains main SiC.Domestic Shanghai Inst. of Silicate, Chinese Academy of Sciences's (metal oxide and carbide), Nanjing Aero-Space University's (oxide compound), University of Science ﹠ Technology, Beijing (SiC) and the wuhan iron ﹠ steel croup co. a few family units such as (oxide compounds) of mainly containing are studied.Chinese patent CN 1235990C, CN 101054289A, CN1046517A and CN1493626A add transition metal oxide and silicon carbide composition with zirconium white or zircon respectively.In the above-mentioned disclosed data, the coating of domestic development mainly is used on the metallic matrix and refractory materials below 1100 ℃, and is inapplicable more than the high temperature (1400 ℃); In addition, other methods that prepare the high emissivity powder also have spraying sintering process described in the CN1296314 and the sol-gel method among the CN101125969A, complex process, and cost is higher.
Summary of the invention
The present invention is the preparation method of a kind of high-temperature coatings with infrared high emissivity blackening agent, it is characterized in that, described blackening agent comprises chromite, ferric oxide, cobalt oxide, manganese oxide, cupric oxide, nickel oxide and titanium oxide, and it is as follows that it forms mass ratio: chromite: ferric oxide: cobalt oxide: manganese oxide: cupric oxide: nickel oxide: titanium oxide is 100: 0-15: 0-10: 5-20: 0-10: 0-10: 0-10; To 200 orders, mix above-mentioned raw materials is levigate, be pressed into thin slice; Then described thin slice was calcined 1.5-4 hour at 1300 ℃-1600 ℃, be crushed to again below 200 orders after the cooling.
The invention provides a kind of high-temperature coatings with infrared high emissivity blackening agent powder, the raw material that adopts is cheap natural chromite powder (emittance 0.82), add other additives it is carried out modification, its emittance is brought up to more than 0.9, and be applicable to the Industrial Stoves below 1600 ℃.
Advantage of the present invention
This blackening agent is mainly used on various process furnace of high alumina brick, mullite brick and metal and the heat treatment furnace inwall and uses in the coating, and the life-time service emittance is stable, and use temperature is up to 1600 ℃, and technology is simple, and cost is lower.
Description of drawings
Fig. 1 is the phase structure of infrared high emissivity blackening agent powder
Embodiment
Embodiment 1:
The according to the form below batching, sintering prepares the high emissivity powder, and full normal emittance is promoted to 0.93 from 0.82
Chromite 100
Ferric oxide 0
Manganese oxide 5
Cupric oxide 2.5
Nickel oxide 3
With levigate extremely-200 orders of all raw materials, weigh in above-mentioned each component ratio, mix, be pressed into thin slice, or, be crushed to-200 orders after the cooling again directly 1600 ℃ of calcinings 1.5 hours, promptly make required powder.
Embodiment 2:
The according to the form below batching, sintering prepares the high emissivity powder, and full normal emittance is promoted to 0.92 from 0.82
Chromite 100
Ferric oxide 15
Cobalt oxide 5
Cupric oxide 0
Titanium oxide 0
With levigate extremely-200 orders of all raw materials, weigh in above-mentioned each component ratio, mix, be pressed into thin slice, 1300 ℃ of calcinings 4 hours, be crushed to-200 orders after the cooling again, promptly make required powder.
Embodiment 3
The according to the form below batching, sintering prepares the high emissivity powder, and full normal emittance is promoted to 0.91 from 0.82
Chromite 100
Ferric oxide 6
Cobalt oxide 0
Manganese oxide 11
Nickel oxide 0
Titanium oxide 5
With levigate extremely-200 orders of all raw materials, weigh in above-mentioned each component ratio, mix, be pressed into thin slice, 1500 ℃ of calcinings 2 hours, be crushed to-200 orders after the cooling again, promptly make required powder.
Claims (1)
1. a high-temperature coatings is with the preparation method of infrared high emissivity blackening agent, it is characterized in that, described blackening agent comprises chromite, ferric oxide, cobalt oxide, manganese oxide, cupric oxide, nickel oxide and titanium oxide, and it is as follows that it forms mass ratio: chromite: ferric oxide: cobalt oxide: manganese oxide: cupric oxide: nickel oxide: titanium oxide is 100: 0-15: 0-10: 5-20: 0-10: 0-10: 0-10; To 200 orders, mix above-mentioned raw materials is levigate, be pressed into thin slice; Then described thin slice was calcined 1.5-4 hour at 1300 ℃-1600 ℃, be crushed to again below 200 orders after the cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910084738XA CN101555369A (en) | 2009-05-22 | 2009-05-22 | Method for preparing blackening agent used for high-temperature infrared energy-conserving paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910084738XA CN101555369A (en) | 2009-05-22 | 2009-05-22 | Method for preparing blackening agent used for high-temperature infrared energy-conserving paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101555369A true CN101555369A (en) | 2009-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200910084738XA Pending CN101555369A (en) | 2009-05-22 | 2009-05-22 | Method for preparing blackening agent used for high-temperature infrared energy-conserving paint |
Country Status (1)
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| CN (1) | CN101555369A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180693A (en) * | 2011-03-14 | 2011-09-14 | 高庆昌 | High-absorptivity coating for resisting oxidation and decarburization of steel billet and preparation method thereof |
| CN102206088A (en) * | 2011-04-12 | 2011-10-05 | 中国科学院唐山高新技术研究与转化中心 | Infrared radiation coating and preparation method thereof |
| CN102604466A (en) * | 2012-01-12 | 2012-07-25 | 广东新劲刚超硬材料有限公司 | Black-increasing agent for high-temperature infrared-radiation energy-saving coating and preparation method of black-increasing agent |
-
2009
- 2009-05-22 CN CNA200910084738XA patent/CN101555369A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102180693A (en) * | 2011-03-14 | 2011-09-14 | 高庆昌 | High-absorptivity coating for resisting oxidation and decarburization of steel billet and preparation method thereof |
| CN102206088A (en) * | 2011-04-12 | 2011-10-05 | 中国科学院唐山高新技术研究与转化中心 | Infrared radiation coating and preparation method thereof |
| CN102604466A (en) * | 2012-01-12 | 2012-07-25 | 广东新劲刚超硬材料有限公司 | Black-increasing agent for high-temperature infrared-radiation energy-saving coating and preparation method of black-increasing agent |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091014 |