CN1435450A - Carbon-contg. refratory material antioxidant coating - Google Patents
Carbon-contg. refratory material antioxidant coating Download PDFInfo
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- CN1435450A CN1435450A CN 02110690 CN02110690A CN1435450A CN 1435450 A CN1435450 A CN 1435450A CN 02110690 CN02110690 CN 02110690 CN 02110690 A CN02110690 A CN 02110690A CN 1435450 A CN1435450 A CN 1435450A
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Abstract
An antioxidizing paint of carbon-containing refractories is characterized by that the feldspar powder, alabaster powder, glass and metal oxide are used as its filler, the modified silicic acid is used as bind agent, and less performance regulator is used. Its advantages are low cost and high antioxidizing performance.
Description
Technical field
The present invention relates to a kind of antioxidant coating, relate in particular to a kind of antioxidant coating of carbon containing refractory.
Technical background
Carbon containing refractory is led general being applied in the ferrous metallurgy technological process because of high temperature use propertieies such as its good slag resistance, thermostability, high thermal conductivity.Cause material surface Decarburized layer void content to increase and short texture but carbon is oxidized easily in the oxidizing atmosphere under the high temperature, influence work-ing life.Traditional method is to add high antioxidant such as metallic aluminium, the magnesium etc. of price in matrix of materials, and is airborne as the appearance side or to preheat process invalid to being exposed to but this method can only solve oxidation of coal problem in the use.Baking with the ladle routine is an example, contains carbon brick decarburization tectorium more than the general surface generation 15mm after toasting, and Decarburized layer eats away after containing steel very soon, and the normal erosion rate of brick is 2～3mm/ time, reduces the life-span more than 5 times thus.
The infiltration of block and do not produce the decarburization tectorium is coated with last layer coating on the carbon containing refractory surface, in case can increase the work-ing life more than 10% generally speaking.The raw material of existing carbon containing refractory antioxidant coating need be fired specially, the cost height.Disclosed as patent CN1052878A is a kind of employing TiO
2, SiC, Si
3N
4Expensive coating for filler.The disclosed coating of patent CN1066078A and CN1035121A all need to coating in advance between 80 degree～110 degree baking in 2～4 hours produce intensity and bonding force, the application of this coating incompatibility metallurgical industryization.Need secondary to smear during the then use of the disclosed coating of Japanese Patent JP60108388A, exist and use the defective that goes up inconvenience.
After existing coating floating coat forms the glaze layer, generally can not use repeatedly.The coating that has then is difficult to long-time preservation for pulpous state.And the powder of the coating that has is with the essential special mixing pan ability mixing of wedding agent, defectives such as field mix inconvenience.
Technology contents
In view of above-mentioned defective, the object of the present invention is to provide the antioxidant coating of the carbon containing refractory that a kind of cost is low, easy to use, antioxidant effect is good.
Each component and the weight percent thereof of the antioxidant coating of carbon containing refractory of the present invention are:
Borosilicate glass powder 10～60%
Cured stone powder 10～50%
Feldspar Powder 10～60%
Wherein the component of wedding agent and weight percent are:
Potash water glass and sodium silicate 97～100%
Urea resin: 0～3%
Potash water glass: sodium silicate=2: 1～3: 1
Powder: wedding agent=100: 110～120
Coating of the present invention also includes one or more in alumina powder≤5%, norbide≤3%, sodium hydroxide≤1%;
Each component and the weight percent thereof of the antioxidant coating of carbon containing refractory of the present invention are:
Borosilicate glass powder 20～40%
Stone flour 25～35%
Feldspar Powder 20～40%
Alumina powder 2～3%
Norbide 1～3%
Sodium hydroxide 0.1～1%
Wedding agent:
Potash water glass and sodium silicate 97～100%
Urea resin 1～3%
Potash water glass: sodium silicate=2: 1～3: 1
Powder: wedding agent=100: 110～120
Contain Na in the wherein above-mentioned borosilicate glass powder
2The weight percent of O is 5～30%, contains B
2O
3Weight percent be 6～58% and contain SiO
2Weight percent be 8～64%.
Contain SiO in the above-mentioned Feldspar Powder
2Weight percent be 60～78%, contain Al
2O
3Weight percent be 2～20%, contain K
2The weight percent of O is 2～12% and contains Na
2The weight percent of O is 3～10%.
Contain SiO in the above-mentioned cured stone powder
2Weight percent be 48～75%, contain Al
2O
3Weight percent be 15～42%.
The compound method of coating of the present invention: wedding agent is mixed and adds entry and make to add powder gradually and stir behind the solution and just make coating of the present invention.
Among the present invention borosilicate glass powder as in temperature form down the main raw material composition of adamantine layer, and cured stone powder and Feldspar Powder mainly are to play effective fire-resistant effect at 800～1000 degree, prevent that coating from crossing low and trickle in this temperature range viscosity.The denseness that has adopted alumina powder at high temperature to regulate coating equally.The main effect of boron carbide powder is that coating and carbon containing refractory have good chemical compatibility and mechanical consistency, oxidable again formation B more than 700 degree
2O
3, not only play the seal gum filling effect, also can regulate the viscosity and the flowability of coating.
Soda glass is that ceramic coating is commonly used in the wedding agent, but self-solidifying speed is slower, easily causes coating cracking, adopts potassic glass compound, is improved the adhesive power of coating to carbonaceous article.The adding of urea resin can further improve the associativity of water glass.
The present invention adopts Feldspar Powder, cured stone powder, glass and metal oxide to do filler, makees wedding agent with modification silicic acid, adds a little performance conditioning agent, does not need special baking, and making can make things convenient for, and cost is low.Coating of the present invention, available oxidized in baking or use to prevent carbon containing refractory, broad application temperature range can effectively protect carbon containing refractory not oxidized in 650 ℃～1200 ℃ scopes.The special glaze layer thermal shock resistance that coating high-temp forms down is strong, resistance to air loss good, can experience repeatedly heating and cooling circulation and not ftracture.As but filler in the coating and wedding agent are separately preserved indefinitely, only need simple tool easily coating to be mixed during use, do not need special coating mixed grind equipment.The coating finished product is a muddy, can preserve for a long time, can directly once brush or spraying application.
With the magnesia carbon brick test is example, and the result shows the sample that scribbles ceramic coating of the present invention after 1000 ℃ of processing, and the surface has formed the fine and close adamantine layer of one deck 0.2～0.3mm, evenly covers specimen surface securely.The sample tangent plane shows non-oxidation decarburization phenomenon.The control sample that no coating is handled produces the 17mm zone of oxidation after with the condition pyroprocessing.
Commerical test is example with the ladle, and the ladle liner structure is a Bao Bi molten bath Al2O3MgOC Bricks, and slag line is a magnesia carbon brick, is that half ladle inner wall of bound pair carries out spray treatment with the longitudinal axis.Through baking (1000 ℃ * 20h) back uses 25 stoves to amount to the Sheng steel time of 3300min, residual brick thickness measurement shows that the processing brick is than the residual thick 10～15mm of Duoing of the brick that is untreated.Can prolong ladle life 3～5 stoves.
Embodiment
Press table 1 preparation various embodiments of the present invention.
Compound method: wedding agent mixed and add about 3% water and form solution, add powder gradually and stir.
The performance of the coating of embodiments of the invention is as shown in table 1.
Table 1
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Powder | Borosilicate glass powder | ??15 | ??40 | ????57 | ????30 |
| Cured stone powder | ??31 | ??45 | ????12 | ????28 | |
| Feldspar Powder | ??50 | ??10 | ????25 | ????25 | |
| Al 2O 3Powder | ??2 | ??4 | ????3 | ????2.5 | |
| Norbide | ??2 | ??1 | ????3 | ????0 | |
| Wedding agent | Potash water glass | ??60 | ??68 | ????73 | ????68 |
| Sodium silicate | ??34 | ??31 | ????23 | ????31 | |
| Urea resin | ??3 | ??2 | ????0 | ????1 | |
| Water | ??3 | ??2 | ????3 | ????3 | |
| Powder: wedding agent | ??100∶110 | ??100∶115 | ????100∶120 | ????100∶115 | |
| Performance | The close g/cm of body 3 | ??1.5 | ??1.55 | ????1.42 | ????1.45 |
| Strong Mpa bonds | ??6.8 | ??6.7 | ????6.0 | ????6.4 | |
| PH value | ??10.6 | ??10.6 | ????10.8 | ????10.7 | |
| Viscosity Mpa.s | ??1900 | ??1980 | ????1800 | ????1870 | |
Embodiment 1:
Above-mentioned borosilicate glass powder contains the Na of weight about 30%
2O and 12% B
2O
3And 54% SiO
2
Above-mentioned feldspar contains 72% SiO
2, 18% Al
2O
3, 6% K
2O and 3% Na
2O.
Above-mentioned cured stone contains 48% SiO
2, 42% Al
2O
3
Embodiment 2
Above-mentioned borosilicate glass powder contains the Na of weight 28%
2O and 8% B
2O
3And 64% SiO
2
Above-mentioned feldspar contains 62% SiO
2, 20% Al
2O
3, 2% K
2O and 10% Na
2O.
Above-mentioned cured stone contains 75% SiO
2, 20% Al
2O
3
Embodiment 3:
Above-mentioned borosilicate glass powder contains the Na of weight 28%
2O and 52% B
2O
3And 20% SiO
2
Above-mentioned feldspar contains 65% SiO
2, 18% Al
2O
3, 10% K
2O and 7% Na
2O.
Above-mentioned cured stone contains 70% SiO
2, 26% Al
2O
3
Embodiment 4
Above-mentioned borosilicate glass powder contains the Na of weight 28%
2O and 8% B
2O
3And 64% SiO
2
Above-mentioned feldspar contains 62% SiO
2, 20% Al
2O
3, 2% K
2O and 10% Na
2O.
Above-mentioned cured stone contains 75% SiO
2, 20% Al
2O
3
Use the coating of the embodiment of the invention:
Constructional method: spread pen is coated in the magnesia carbon brick surface, and thickness is 0.2mm.
Use technology: coating self-solidifying sclerosis after 1 hour reached 1000 ℃ and be incubated 6 hours (simulation ladle baking system) in 10 hours through 100 ℃/hour again.
Use result such as table 2.
Table 2
| Sample | Scribble coating | Coating is not arranged | Remarks | |
| Embodiment 1 | Weight loss % | 0.1 | 4.2 | There is the photochromic layer of 0.3mm the part, no peeling and cracking |
| Oxidated layer thickness mm | 0～0.3 | 17 | ||
| Embodiment 2 | Weight loss % | 0.05 | 4.4 | Sample brick Watch glass shape layer, surfacing, protection is good |
| Oxidated layer thickness mm | 0～0.3 | 18 | ||
| Embodiment 3 | Weight loss % | 0.07 | 4.1 | No photochromic layer and peeling |
| Oxidated layer thickness mm | 0～0.3 | 16 | ||
| Embodiment 4 | Weight loss % | 0.11 | 4.2 | Protection against oxidation is good substantially, but odd oxidation point is arranged, and is white in color. |
| Oxidated layer thickness mm | 0～0.3 | 16 | ||
Claims (4)
1. each component of a carbon containing refractory antioxidant coating and weight percent thereof are:
Borosilicate glass powder 10～60%
Cured stone powder 10～50%
Feldspar Powder 10～60%
Wherein wedding agent is:
Potash water glass and sodium silicate 97～100%
Urea resin 0～3%
Potash water glass: sodium silicate=2: 1～3: 1
Powder: wedding agent=100: 110～120
2. carbon containing refractory antioxidant coating as claimed in claim 1 is characterized in that, also further includes in alumina powder≤5%, norbide≤3%, sodium hydroxide≤1% one or more.
3. each component of a carbon containing refractory antioxidant coating and weight percent thereof are:
Borosilicate glass powder 20～40%
Cured stone powder 25～35%
Feldspar Powder 20～40%
Alumina powder 2～3%
Norbide 1～3%
Sodium hydroxide 0.1～1%
Wedding agent:
Potash water glass and sodium silicate 97～100%
Urea resin 1～3%
Potash water glass: sodium silicate=2: 1～3: 1
Powder: wedding agent=100: 110～120
4. as claim 1,2 or 3 described carbon containing refractory antioxidant coatings, it is characterized in that, contain Na in the wherein said borosilicate glass powder
2The weight percent of O is 5～30%, contains B
2O
3Weight percent be 6～58% and contain SiO
2Weight percent be 8～64%;
Contain SiO in the described Feldspar Powder
2Weight percent be 60～78%, contain A1
2O
3Weight percent be 2～20%, contain K
2The weight percent of O is 2～12% and contains Na
2The weight percent of O is 3～10%;
Contain SiO in the described cured stone powder
2Weight percent be 48～75%, contain Al
2O
3Weight percent be 15～42%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02110690 CN1229445C (en) | 2002-01-29 | 2002-01-29 | Carbon-contg. refratory material antioxidant coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02110690 CN1229445C (en) | 2002-01-29 | 2002-01-29 | Carbon-contg. refratory material antioxidant coating |
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| Publication Number | Publication Date |
|---|---|
| CN1435450A true CN1435450A (en) | 2003-08-13 |
| CN1229445C CN1229445C (en) | 2005-11-30 |
Family
ID=27628243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02110690 Expired - Lifetime CN1229445C (en) | 2002-01-29 | 2002-01-29 | Carbon-contg. refratory material antioxidant coating |
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|---|---|
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343345C (en) * | 2004-12-08 | 2007-10-17 | 刘少光 | Super critical boiler wear resistant anticorrosion paint and its production method |
| CN101866761A (en) * | 2010-05-27 | 2010-10-20 | 福达合金材料股份有限公司 | Preparation method for silver graphite-silver composite electrical contact material and antioxidant coating special for same |
| CN101928480A (en) * | 2010-09-07 | 2010-12-29 | 武汉科技大学 | Method for preparing magnesia carbon brick non-aluminum antioxidant coating |
| CN101143994B (en) * | 2007-10-12 | 2012-02-22 | 商雪堂 | Circulating water cooling tower anti-fouling paint |
| CN103421362A (en) * | 2013-07-19 | 2013-12-04 | 吴江龙硕金属制品有限公司 | Antioxidant paint and preparation method thereof |
| CN104987094A (en) * | 2015-07-08 | 2015-10-21 | 武汉理工大学 | Alkali resistant ceramic coating material and preparation method thereof |
| CN106631053A (en) * | 2016-09-29 | 2017-05-10 | 武汉科技大学 | Refractory material for steel tapping hole of converter and preparation method for refractory material |
| CN111960832A (en) * | 2020-08-24 | 2020-11-20 | 青岛弘汉耐火材料有限公司 | Bare body sintering coating for aluminum-carbon product and bare body sintering method |
-
2002
- 2002-01-29 CN CN 02110690 patent/CN1229445C/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100343345C (en) * | 2004-12-08 | 2007-10-17 | 刘少光 | Super critical boiler wear resistant anticorrosion paint and its production method |
| CN101143994B (en) * | 2007-10-12 | 2012-02-22 | 商雪堂 | Circulating water cooling tower anti-fouling paint |
| CN101866761A (en) * | 2010-05-27 | 2010-10-20 | 福达合金材料股份有限公司 | Preparation method for silver graphite-silver composite electrical contact material and antioxidant coating special for same |
| CN101928480A (en) * | 2010-09-07 | 2010-12-29 | 武汉科技大学 | Method for preparing magnesia carbon brick non-aluminum antioxidant coating |
| CN101928480B (en) * | 2010-09-07 | 2012-05-23 | 武汉科技大学 | Method for preparing magnesia carbon brick non-aluminum antioxidant coating |
| CN103421362A (en) * | 2013-07-19 | 2013-12-04 | 吴江龙硕金属制品有限公司 | Antioxidant paint and preparation method thereof |
| CN104987094A (en) * | 2015-07-08 | 2015-10-21 | 武汉理工大学 | Alkali resistant ceramic coating material and preparation method thereof |
| CN104987094B (en) * | 2015-07-08 | 2017-11-17 | 武汉理工大学 | A kind of alkali resistance ceramic coating material and preparation method thereof |
| CN106631053A (en) * | 2016-09-29 | 2017-05-10 | 武汉科技大学 | Refractory material for steel tapping hole of converter and preparation method for refractory material |
| CN106631053B (en) * | 2016-09-29 | 2019-12-10 | 武汉科技大学 | Refractory material for converter steel tapping hole and preparation method thereof |
| CN111960832A (en) * | 2020-08-24 | 2020-11-20 | 青岛弘汉耐火材料有限公司 | Bare body sintering coating for aluminum-carbon product and bare body sintering method |
| CN111960832B (en) * | 2020-08-24 | 2022-10-11 | 青岛弘汉耐火材料有限公司 | Bare body sintering coating for aluminum-carbon product and bare body sintering method |
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| Publication number | Publication date |
|---|---|
| CN1229445C (en) | 2005-11-30 |
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