CN1143060A - Magnesio-alumino-spinel high temperature coating oxygen blowing tube - Google Patents
Magnesio-alumino-spinel high temperature coating oxygen blowing tube Download PDFInfo
- Publication number
- CN1143060A CN1143060A CN 95108969 CN95108969A CN1143060A CN 1143060 A CN1143060 A CN 1143060A CN 95108969 CN95108969 CN 95108969 CN 95108969 A CN95108969 A CN 95108969A CN 1143060 A CN1143060 A CN 1143060A
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- China
- Prior art keywords
- coating
- high temperature
- magnesio
- alumino
- spinel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Treatment Of Steel In Its Molten State (AREA)
- Ceramic Products (AREA)
Abstract
The oxygen-blowing tube for smelting steel has a fire resistance higher than 1850 deg.C and is produced with common welded tube as base, on which a layer of waterproof high-temp. coating is formed by painting refractory magnesio-alumino-spinel and through normal-temp. hardening and low-temp. roasting. The product has a size of 10-50 mm in diameter and 8 m in length and a coating thickness of 1-3mm. The present invention makes it possible to reduce oxygen-blowing tube consumption, raise oxygen-supplying strength and shorten smelting period.
Description
The invention relates to the high temperature resistant corrode of a kind of energy, reduce the product that steel-making consumes with oxygen lance.Existing steel-making mostly is common steel tube or wrapping refractory mortar steel pipe with oxygen lance, and consumption per ton of steel reaches the 4-5 kilogram.
The present invention adopts painting process extremely easily, produces the coating densification, the cohesive strength height, and water resistance is good, can resist the steelmaking oxygen blowing tube of high temperature corrode more than 1850 ℃.
Method of the present invention is the high temperature resistance corrode fireproof magnesia alumina spinel material that reaches common welded tube surfaces externally and internally coating one deck 1-3 millimeter of 8 meters in length.
Method of the present invention comprises:
1, can with the steel pipe secure bond, but cold setting or good through the water resistance of 100-200 ℃ of baking hardening, refractoriness is greater than 1850 ℃ fire-resistant high-temperature coatings.Coating consists of: MgO 30-50%, Al
2O
345-65%, SiO
25-10%.
2, adopt the coating of groove slurry to move about sizing method in the even high-temperaure coating of steel tube surface formation one deck.
3, provide a kind of high temperature coating oxygen lance in use to connect fast, continuously the method for using.
Product physicochemical property of the present invention is as shown in the table:
| Project | Index |
| Coat-thickness (mm) | 1-3 |
| The coating refractoriness (℃) | Greater than 1850 ℃ |
| Coating refractory matter composition (%) | MgO30-50％，Al 2O 345-65％， SiO 25-10％ |
| Steel pipe chemical ingredients (%) | C.0.12-0.22，Mn?0.30-0.80 Si＜0.30，S.P＜0.045 |
| Coating cohesive strength (MPa) | Greater than 0.2 |
| Dry splitting resistance (my god) | Crackle do not occur, and do not come off in 360 days |
| Vibration resistance (100 millimeters/6 meters of amplitudes are long) | Coating is not split, and does not come off |
| Flex resistance (100 millimeters/6 meters of amounts of deflection are long) | Coating is not split, and does not come off |
| Water tolerance (soaking in the normal-temperature water) | More than 240 hours |
| Freeze-thawing resistant cycle index (30 ℃-20 ℃) | More than 10 times |
Product Electric furnace steel making oxygen blast of the present invention uses correlation data as shown in the table:
The embodiment of the invention: make magnesio-alumino-spinel high temperature coating oxygen blowing tube.
Example 1
Common steel tube is through rust cleaning, oil removal treatment drying.By the inventive method 1 preparation coating, in the operation of steel tube surface making coatings, every steel pipe coating once-forming after 72 hours, promptly gets product in the normal temperature seasoning.
Example 2
Common steel tube is through rust cleaning, oil removal treatment drying.By the inventive method 1 preparation coating, in the operation of steel tube surface making coatings, every steel pipe coating once-forming after 48 hours, after 10 hours, promptly gets product through low temperature 100-200 ℃ of baking in the normal temperature seasoning.
Claims (3)
1, a kind of magnesio-alumino-spinel high temperature coating oxygen blowing tube is characterized in that steel tube surface coating one deck water resistance is good, high temperature resistant corrode fireproof magnesia alumina spinel material.Coated component is: MgO30-50%, Al
2O
345-65% SiO
25-10%.
2, a kind of magnesio-alumino-spinel high temperature coating oxygen blowing tube is characterized in that steel tube surface coating one deck cohesive strength greater than 0.2 MPa fireproof magnesia alumina spinel coating, coating once-forming, 48 hours Air dryings, the baking in 10 hours of 100-200 ℃ of low temperature.
3, a kind of magnesio-alumino-spinel high temperature coating oxygen blowing tube is characterized in that steel tube surface coating one deck cohesive strength greater than 0.2 MPa fireproof magnesia alumina spinel coating, coating once-forming, 72 hours dryings of normal temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95108969 CN1143060A (en) | 1995-08-11 | 1995-08-11 | Magnesio-alumino-spinel high temperature coating oxygen blowing tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95108969 CN1143060A (en) | 1995-08-11 | 1995-08-11 | Magnesio-alumino-spinel high temperature coating oxygen blowing tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1143060A true CN1143060A (en) | 1997-02-19 |
Family
ID=5076991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95108969 Pending CN1143060A (en) | 1995-08-11 | 1995-08-11 | Magnesio-alumino-spinel high temperature coating oxygen blowing tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1143060A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356207C (en) * | 2002-07-08 | 2007-12-19 | 日东电工株式会社 | Method for mfg. coating thin plate, optical function layer, optical element and image display apparatus |
| CN103056089A (en) * | 2012-12-18 | 2013-04-24 | 江西铜业股份有限公司 | Preparation process of oxidization and reduction air pipe |
| CN103739300A (en) * | 2013-12-16 | 2014-04-23 | 陈小杰 | Composite oxygen-blowing pipe coating |
| CN108484156A (en) * | 2018-04-12 | 2018-09-04 | 武汉理工大学 | A kind of spinel solid solution crystalline ceramics preparation method based on the processing of powder resistant to hydrolysis and gel casting forming |
-
1995
- 1995-08-11 CN CN 95108969 patent/CN1143060A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356207C (en) * | 2002-07-08 | 2007-12-19 | 日东电工株式会社 | Method for mfg. coating thin plate, optical function layer, optical element and image display apparatus |
| US7361382B2 (en) | 2002-07-08 | 2008-04-22 | Nitto Denko Corporation | Method for manufacturing coated sheet, optical functional layer, optical element, and image display device |
| CN103056089A (en) * | 2012-12-18 | 2013-04-24 | 江西铜业股份有限公司 | Preparation process of oxidization and reduction air pipe |
| CN103739300A (en) * | 2013-12-16 | 2014-04-23 | 陈小杰 | Composite oxygen-blowing pipe coating |
| CN103739300B (en) * | 2013-12-16 | 2015-03-18 | 陈小杰 | Composite oxygen-blowing pipe coating |
| CN108484156A (en) * | 2018-04-12 | 2018-09-04 | 武汉理工大学 | A kind of spinel solid solution crystalline ceramics preparation method based on the processing of powder resistant to hydrolysis and gel casting forming |
| CN108484156B (en) * | 2018-04-12 | 2021-03-23 | 武汉理工大学 | Preparation method of spinel solid solution transparent ceramic based on powder hydrolysis resistance treatment and gel injection molding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |