CN103553547B - A kind of pottery kiln heat radiation coating - Google Patents
A kind of pottery kiln heat radiation coating Download PDFInfo
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- CN103553547B CN103553547B CN201310524262.3A CN201310524262A CN103553547B CN 103553547 B CN103553547 B CN 103553547B CN 201310524262 A CN201310524262 A CN 201310524262A CN 103553547 B CN103553547 B CN 103553547B
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Abstract
The invention discloses a kind of ceramic kiln heat radiation coating, comprise base-material, additive, tackiness agent, softening agent and solvent, base-material and additive be selected from gahnite powder, manganese-aluminium spinelle powder, ilmenite powder, norbide, ferric oxide, five kinds of silicon powder or all; Tackiness agent forms after being tempered by liquid phosphoric acid aluminum dihydrogen.The weight percent of described base-material and additive is 6%-75%, and the weight percent of tackiness agent is 5%-29%, and the weight percent of softening agent is 0.5%-3%, and surplus is solvent.It is large that this coating has operating temperature range, and can use at the temperature more than 1400 DEG C, maximum operation (service) temperature can reach nearly 1800 DEG C; And be applicable to various matrix, to the strong adhesion of matrix, be applicable to soda acid multiple ambient, long-term durability is good, heat shock resistance ability to bear is strong, improves energy utilization thermo-efficiency, reduces the substrate temperature that coating covers, wear-resisting and good corrosion resistance is little to environmental influence, easy to use.
Description
Technical field
The present invention relates to a kind of ceramic kiln heat radiation coating, more precisely, relate to a kind of high emissivity coating that can improve furnace thermal efficiency, can be applicable to the roller kiln of ceramic industry, tunnel furnace, shuttle kiln.
Background technology
Ceramic kiln heat radiation coating is applied in a lot of industry; it can be used in the heat absorbent surface of various industrial furnace as refractory materials; utilize coating to the principle of thermal-radiating high-absorbility and high emissivity; improve High Temperature Furnaces Heating Apparatus kiln lining body to the absorption of furnace flame heat; improve the heat exchange conditions of burner hearth, body of heater is dispelled the heat and declines, add the thermo-efficiency of energy utilization; to burner hearth substrate material, there is good provide protection simultaneously, extend stove work-ing life, reduce maintenance workload.In addition, by strengthening Radiative heat transfer in furnace, the homogeneity of temperature field in furnace and the heating quality of heated object can also be improved.
Ceramic kiln heat radiation coating is made up of high temperature resistant base-material, high emissivity additive and tackiness agent usually.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, such as, 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.
Following factor should be considered: under high temperature, there is metastable high emissivity during the design of ceramic kiln heat radiation coating; Suitable particle size; With the thermal expansion matching of matrix, mechanical bond, chemical binding; The hot properties of coating, erosion resistance and wear resistance; There are good sticking power and rheological under normal temperature, are easy to construction; Finally also have the cost of coating, if the cost of coating is far away higher than the energy recovery of plan, so this coating is without any economic implications.
Have developed the ceramic kiln heat radiation coating of multiple formulations and purposes at present both at home and abroad.But when application of paints is to higher temperature, or when carrying out work for a long time under multicomponent atmosphere, the performance of coating can be subject to great impact, coating efficiencies declines and even lost efficacy.
Summary of the invention
The object of this invention is to provide one in temperature more than 1400 DEG C, to work under multicomponent atmosphere for a long time, be easy to construct (spray gun can be used to spray), economical and practical ceramic kiln heat radiation coating.This coating can be applicable to oil, chemical industry, metallurgical furnace kiln, and can improve the thermo-efficiency of stove.
Following technical scheme is adopted: a kind of ceramic kiln heat radiation coating, is characterized in that: comprise base-material, additive, tackiness agent, softening agent and solvent for realizing object of the present invention, wherein:
Described base-material and additive be selected from gahnite powder, manganese-aluminium spinelle powder, ilmenite powder, norbide, ferric oxide, five kinds of silicon powder or all;
Described tackiness agent forms after being tempered by liquid phosphoric acid aluminum dihydrogen.
Preferably, described softening agent is selected from yellow starch gum and/or carboxymethyl cellulose.
Preferably, described solvent be selected from silicon sol, water one or both.
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 the emittance not only improving coating, and coating can use 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 absorbing various photon is strong, further increases the emittance of coating.Coating of the present invention is made by Powdered base-material and additive, softening agent, liquid adhesive and solvent, when low temperature brushing or spray to stove matrix on or on metallic conduit, by using after 100 DEG C of dryings, construct simple and convenient.Coating of the present invention can use at the temperature more than 1400 DEG C, and maximum operation (service) temperature can reach nearly 1800 DEG C.In addition, ceramic kiln heat radiation coating of the present invention is applicable to various matrix, to the strong adhesion of matrix, be applicable to soda acid multicomponent atmosphere, 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 making technical problem to be solved by this invention, the technical scheme taked, obtain, 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, and fully mixing can obtain 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, and fully mixing can obtain 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, and fully mixing can obtain coating of the present invention.
Abrasion loss is tested:
Get the sample that the various embodiments described above obtain respectively, on spray refractory standard sample, and be heated to 1400 DEG C of sintering, and get control sample respectively 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 do not sprayed is 5 %, so, through contrast test, use the resistance to abrasion of the test sample of coating higher about 10 times than not spraying sample.
Each raw material cited by the present invention can realize the present invention, does not enumerate at this; The bound value of each raw material of the present invention, and its interval value, can realize the present invention, not enumerate at this.
Claims (2)
1. a ceramic kiln heat radiation coating, is characterized in that described coating is made up of following component: 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; Described tackiness agent is made up of the aluminium dihydrogen phosphate mixing that adds water; Between the density 1.1-1.3 of the rear tackiness agent of mediation.
2. ceramic kiln heat radiation coating according to claim 1, is characterized in that: described solvent be selected from silicon sol, water one or both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524262.3A CN103553547B (en) | 2013-10-31 | 2013-10-31 | A kind of pottery kiln heat radiation coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524262.3A CN103553547B (en) | 2013-10-31 | 2013-10-31 | A kind of pottery kiln heat radiation coating |
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| Publication Number | Publication Date |
|---|---|
| CN103553547A CN103553547A (en) | 2014-02-05 |
| CN103553547B true CN103553547B (en) | 2015-09-09 |
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| CN201310524262.3A Active CN103553547B (en) | 2013-10-31 | 2013-10-31 | A kind of pottery kiln heat radiation coating |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524138A (en) * | 2013-11-01 | 2014-01-22 | 张婷 | Heat radiation coating for steel heating furnace |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009152536A (en) * | 2007-08-17 | 2009-07-09 | Shinshu Univ | Circuit board of electronic apparatus assuring highly efficient heat radiation, and electronic controller, computer system, electrical home appliance, and industrial apparatus product including the same |
| CN102020475B (en) * | 2010-09-29 | 2012-10-17 | 北京安泰恒业科技有限公司 | Ceramic coating used for heating furnace |
| CN102585571B (en) * | 2012-01-12 | 2013-11-27 | 广东新劲刚新材料科技股份有限公司 | Infrared energy-saving coating with anti-corrosion and anti-coking functions and preparation method thereof |
| CN102701746B (en) * | 2012-05-14 | 2014-02-19 | 武汉理工大学 | Preparation method of infrared radiation ceramic powder in spinel-silicate multi-phase composite system |
| CN102786300B (en) * | 2012-08-15 | 2014-09-17 | 武汉瑞干科技开发有限公司 | Radiant heat reinforced absorbent and preparation method thereof |
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