CN1884203A - Novel aluminum-zirconium-carbon slide brick for flow control in metallurgy industry - Google Patents
Novel aluminum-zirconium-carbon slide brick for flow control in metallurgy industry Download PDFInfo
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- CN1884203A CN1884203A CN 200610047117 CN200610047117A CN1884203A CN 1884203 A CN1884203 A CN 1884203A CN 200610047117 CN200610047117 CN 200610047117 CN 200610047117 A CN200610047117 A CN 200610047117A CN 1884203 A CN1884203 A CN 1884203A
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- CN
- China
- Prior art keywords
- zirconium
- sintering
- flow control
- slide brick
- metallurgy industry
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Abstract
The invention discloses a new typed sliding brick in the iron smelting course, which comprises the following parts: 60-125 percent sintered or electric melting corundum, 10-20 percent sintered Al2O3 powder under 50 mum, 5-15 percent sintered or electric melting zirconium mullite, 5-20 percent sintered or electric melting zirconium corundum, 1-5 percent metal Si, 1-8 percent carbon material and 0.5-4.0 anti-oxidization agent.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, the new type slide plate brick that control stream uses in a kind of smelting iron and steel is provided, and this slide brick has good anti-molten steel meltbility, anti-oxidant, antistripping, has the favorable mechanical performance under the high temperature, the chemical stability height, anti-erosion; Thermal crack can not appear in good thermal shock stability, life-span length, the use simultaneously.
Background technology
Sliding material is the important functional element of control stream in the ferrous metallurgy process.In use, common sliding material can crack because of inner suffered unbalanced stress.The rapid variation of pouring molten steel initial stage thermal shock, mechanism's deformation that slide plate is installed, slide plate working face pressurized inequality, the mounting means of slide plate, the planeness of ladle, tundish bottom is unequal all to be the reason that causes above crackle.Oxygen in molten steel, the content overproof of nitrogen can cause the decline of molten steel quality, if slide plate cracks at this moment, molten steel can enter in the crackle, cause folder steel, bleed-out accident when slide plate comes off, causes steel-making or continuous casting to produce.
Inclusion metallic in molten steel and the molten steel also can cause melting loss, oxidation and the falling into disuse of slide brick, for preventing the appearance of above phenomenon, people have added carbon material in slide plate, but the carbon material in the slide plate, in use can combine with the composition, the tissue that come off because of oxidation in the slide brick, weak, the slow-paced chemical reaction of generation bonding force, the bonding melting loss that is easy to cause sliding material of resultant and nonmetal oxide.
At above problem, people have carried out multiple research and development, and a kind of slide brick adopts following proportioning, form in weight:
Sintering/fused corundom, 80-85, granularity is the following Calcined polishing aluminum oxides of 50 μ m, 5-10, metal Si 3-5, carbon material 4-6, metal oxidation inhibitor 0.1-0.5.
Adopt the slide brick product of above prescription to solve the problem that exists in the above-mentioned slide plate application to a certain extent, yet the microtexture of this kind slide plate is fine and close inadequately, the plate surface wear in the pouring molten steel is serious, and work-ing life is short.
Summary of the invention
The present invention is exactly a kind of flow control in metallurgy industry novel aluminum-zirconium-carbon slide brick that proposes for the problem that solves existence such as above skateboard is fine and close inadequately, work-ing life is short.In the prescription of slide brick, enlarged ultra micro Al
2O
3The usage quantity of powder has been improved the slide plate microtexture, thereby has improved normal, the hot strength of slide plate, introduces zirconium mullite, zircon corundum simultaneously to improve the heat resistanceheat resistant spalling of goods, heat-shock resistance and anti-chemical melting loss.
A kind of flow control in metallurgy industry novel aluminum-zirconium-carbon slide brick is characterized in that its moiety is as follows, by its weight part proportioning: sintering or fused corundom 60-125 part, the calcining Al that 50 μ m are following
2O
3Powder 10-20 part, sintering or fused zirconia-mullite 5-15 part, sintering or electric fused zirconium corundum 5-20 part, metal Si 1-5 part, carbon material 1-8 part, oxidation inhibitor 0.5-4.0 part.
Below just in the prescription introducing amount standard of various materials do one and specify.
Sintering or fused corundom consumption are during greater than described higher limit (＞125), and be poor because of the spalling resistance of itself, the slide plate plate facial cleft line that causes, and molten steel can enter the destruction slide plate from crackle.When consumption during less than described lower value (＜60), poor to the erosion resistivity of the erosion of molten steel and non-metallic inclusion, cause that the heat-resisting melting loss of slide plate is poor, therefore in above-mentioned amount ranges the best.
Be the high temperature break resistant intensity of raising slide plate, the sintering of introducing or fused corundom, adopted following grain composition, by weight ratio:
4-1mm，10-15
1-0.22mm，25-60
＜0.22mm，10-20
＜0.04mm，10-20
For improving the slide plate microtexture, improve its sintering character, realize the raising of its mechanical property, chemical refractory damage property, just must rationally control the addition of the following Calcined polishing aluminum oxide super-fine powder of 50 μ m granularities.When calcined oxide aluminium powder consumption during greater than described higher limit (＞20), the generation of waste product when causing the slide plate moulding easily, consumption is during less than described lower value (＜10), the microtexture of slide brick improved little, and it is high to cause the refractory of slide brick to decrease property.
The introducing of sintering or fused zirconia-mullite can make the raising of heat resistanceheat resistant spalling, the work-ing life of goods improve, and reduces the generation of thermal crack.In sintering or the fused zirconia-mullite, require its chemical constitution to meet the following conditions, by weight ratio:
ZrO
2 27-39，Al
2O
3 40-46，SiO
2 15-20
The usage quantity of zirconium mullite is the best with the 5-15 weight part in the slide plate prescription.
In the slide brick prescription, only adopt the calcined oxide aluminium powder can not realize the improvement of the antistripping of slide plate, heat resistanceheat resistant melting loss, thereby need to add sintering or electric fused zirconium corundum.When sintering or electric fused zirconium corundum raw material consumption during greater than described higher limit (＞20), the heat resistanceheat resistant melting loss DeGrain of slide brick, when consumption during less than described lower value (＜5), the antistripping of goods is poor, for realizing good antistripping, the heat resistanceheat resistant melting loss of goods, its consumption should be between above-mentioned weight part 5-20 scope in the slide brick prescription.
For sintering/electric fused zirconium corundum, its chemical composition requires as follows, by weight ratio:
Al
2O
3 50-90，ZrO
2 10-50。
The introducing of metal Si powder can improve bonding strength, the thermal shock resistance of slide brick goods.When metal Si powder consumption during greater than described higher limit (＞5), slide brick heat resistanceheat resistant melting loss is poor; Consumption is during less than described lower value (＜1), and intensity, the thermal shock resistance of slide brick body are poor.In general, optimum quantum of utilization is above-mentioned value range, 1-5, and granularity is about 0.02mm.
The introducing of carbon material can improve the heat resistanceheat resistant melting loss and the thermal shock resistance of slide brick goods, and when consumption during greater than described higher limit (＞8), the oxidation meeting of carbon material causes the falling into disuse of slide brick tissue; Consumption is during less than lower value (＜1), and the improvement effect of thermal shock resistance, heat resistanceheat resistant melting loss is little.Therefore the optimum amount of carbon material is 1-8.
Above carbon material comprises unsetting (graphitiferous) and setting (not graphitiferous) two kinds, and granularity is about 0.2 μ m, is preferably below the 0.2 μ m.
In slide plate used, the easy oxidation of carbon material caused the void defects of sled surface, and the nonmetal inclusion in the molten steel is easy to be adsorbed on sled surface, causes further oxidation, the pitted skinization of slide plate working face.In order to improve slide brick in normal, pyritous performance, prevent the oxidative attack of molten steel to slide brick, added CaC among the present invention, boride ceramics, oxycarbide, oxynitride, SiO
2, B
2O
3, P
2O
3, V
2O
5Be compounded to form anti-oxidizing agent etc. a series of oxide compounds, various metal and composition metal system as among Al, Mg, Si, Al-Mg, Al-Si and non-oxide based compound such as BN, SiN, the AlON one or more, its addition is at 0.5-4.0.
More than prescription is applicable to whole slide plate production, also can be used as the using for inserted slide plate production of brick core body of large-scale sliding material.
The working condition of goods is: under the 1000-1400 ℃ of temperature, burn till under oxidation or the reducing atmosphere.
Novelty compared with prior art of the present invention and creativeness are embodied in: the present invention is by suitably increasing superfine calcinated Al in the slide brick prescription
2O
3The powder consumption is introduced an amount of zirconium mullite and zircon corundum; By adjusting metal Si, C cellulosic material consumption and introducing other functional oxidation inhibitors, improved normal, hot strength, the thermal shock resistance of slide plate; Reduced the be full of cracks that slide plate is caused by oxidation, thereby made anti-oxidant, antistripping, the well behaved slide plate product of heat-resisting melting loss, finally the work-ing life of having improved slide plate greatly, reduced the comprehensive cost in the smelting iron and steel, economic benefit is considerable, and market outlook are good.
Description of drawings
Fig. 1 has provided the effusive mouth of a river of control molten steel, skate apparatus schematic cross-section in the tundish system.1,2 are respectively filling pipe end, submerged nozzle among the figure; 3,4 are respectively upper and lower slide brick product among the figure.The life-span of above slide brick determines jointly according to the oxygen blow duration of pouring molten steel time, access times, molten steel, the multiple factors such as kind of steel.
Fig. 2 is the structural section synoptic diagram of inserted slide plate core body.
Embodiment
Table one and table two are the present invention's application examples in production of articles.
Data declaration embodiment (1-3) is greatly improved than the void content of the slide plate product of adjusting prescription and compressive strength, resistance to fouling, anti-performance index such as wash away in table one and the table two.
Table one application example 1
| Composition | Granularity (mm) | The weight part proportioning | The embodiment of the invention | ||
| 1 | 2 | 3 | |||
| Sintering or fused corundom | 4-1 | 5-15 | 15 | 10 | 5 |
| 1-0.2 | 20-50 | 20 | 50 | 40 | |
| ＜0.2 | 10-30 | 15 | 10 | 30 | |
| ＜0.04 | 10-20 | 15 | 20 | 10 | |
| Calcining Al 2O 3Powder | 5-10 | 5 | 8 | 10 | |
| Sintering or fused zirconia-mullite ZrO 2 27-39％，Al 2O 3 40-46％，SiO 215-20％ | 5-15 | 10 | 5 | 15 | |
| Sintering or electric fused zirconium corundum Al 2O 3 50-90％，ZrO 2 10-50％ | 5-20 | 14 | 5 | 20 | |
| Metal Si | ＜0.02 | 1-5 | 3 | 1 | 5 |
| C | ＜0.2 | 4-6 | 6 | 5 | 4 |
| Oxidation inhibitor | 0.1-0.5 | 0.1 | 0.3 | 0.5 | |
| Performance index | Void content, % | 7-13 | 3.7 | 6.5 | 9.7 |
| Volume density, g/cm 3 | 3.0-3.2 | 3.3 | 3.2 | 3.3 | |
| Compressive strength, Kg/cm 2 | 1200-1700 | 3500 | 2970 | 1850 | |
| Thermal expansivity, % is under 1000 ℃ | +0.6-0.7 | 0.7 | 0.6 | 0.6 | |
Table two application example 2
| Distinguish | Description and quantity | The embodiment of the invention | |||
| 1 | 2 | 3 | |||
| Chemical Composition | Mineral facies | β-SiC | β-SiC | ||
| Al 2O 3 | 91-86 | 85-75 | |||
| ZrO 2 | 4-13 | ||||
| C | 6-8 | 3-10 | |||
| High temperature sludge corrodes (%), 1650 ℃ * 3hrs | 100％ | 75 | 76 | 78 | |
| Thermal shock resistance (1600 ℃) | △ | ◎ | ◎ | ◎ | |
| Steel grade | Ordinary steel | Ordinary steel (embodiment) | |||
| Bimetry/practical life | 3-6 | 10 | 8 | 7 | |
Claims (6)
1, a kind of flow control in metallurgy industry novel aluminum-zirconium-carbon slide brick is characterized in that its moiety is as follows, by its weight part proportioning: sintering or fused corundom 60-125 part, the calcining Al that 50 μ m are following
2O
3Powder 10-20 part, sintering or fused zirconia-mullite 5-15 part, sintering or electric fused zirconium corundum 5-20 part, metal Si1-5 part, carbon material 1-8 part, oxidation inhibitor 0.5-4.0 part.
2, a kind of flow control in metallurgy industry novel aluminum-zirconium-carbon slide brick according to claim 1 is characterized in that: sintering or fused corundom, adopted following grain composition, by weight ratio:
4-1mm, 10-15 part
1-0.22mm, 25-60 part
＜0.22mm, 10-20 part
＜0.04mm, 10-20 part.
3, a kind of flow control in metallurgy industry novel aluminum-zirconium-carbon slide brick according to claim 1 is characterized in that in sintering or the fused zirconia-mullite, its chemical constitution meets the following conditions, by weight ratio: ZrO
227-39, Al
2O
340-46, SiO
215-20.
4, a kind of flow control in metallurgy industry novel aluminum-zirconium-carbon slide brick according to claim 1 is characterized in that described sintering/electric fused zirconium corundum, and its chemical composition requires as follows, by weight ratio: Al
2O
350-90, ZrO
210-50.
5, a kind of flow control in metallurgy industry novel aluminum-zirconium-carbon slide brick according to claim 1 is characterized in that described oxidation inhibitor is meant CaC, boride ceramics, oxycarbide, oxynitride, SiO
2, B
2O
3, P
2O
3, V
2O
5A series of oxide compounds, various metal and composition metal system are compounded to form anti-oxidizing agent as among Al, Iug, Si, Al-Mg, Al-Si and non-oxide based compound such as BN, SiN, the AlON one or more.
6, a kind of flow control in metallurgy industry novel aluminum-zirconium-carbon slide brick according to claim 1 is characterized in that described carbon material comprises unsetting and two kinds of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100471170A CN100364931C (en) | 2006-07-05 | 2006-07-05 | Novel aluminum-zirconium-carbon slide brick for flow control in metallurgy industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100471170A CN100364931C (en) | 2006-07-05 | 2006-07-05 | Novel aluminum-zirconium-carbon slide brick for flow control in metallurgy industry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1884203A true CN1884203A (en) | 2006-12-27 |
| CN100364931C CN100364931C (en) | 2008-01-30 |
Family
ID=37582523
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100471170A Expired - Fee Related CN100364931C (en) | 2006-07-05 | 2006-07-05 | Novel aluminum-zirconium-carbon slide brick for flow control in metallurgy industry |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774820A (en) * | 2010-02-26 | 2010-07-14 | 卫辉熔金高温材料有限责任公司 | Slide plate refractory with silicon nitride added and production method thereof |
| CN102030548A (en) * | 2010-11-08 | 2011-04-27 | 无锡市南方耐材有限公司 | Metal ceramic combination sintering free low carbon sliding plate brick and preparation method thereof |
| CN102603322A (en) * | 2012-03-15 | 2012-07-25 | 宝山钢铁股份有限公司 | Unfired aluminum-zirconium-carbon slide plate added with silica micro-powder and method for preparing unfired aluminum-zirconium-carbon slide plate |
| EP3053897A1 (en) * | 2015-02-09 | 2016-08-10 | Refractory Intellectual Property GmbH & Co. KG | Formulation and process for the manufacture of a refractory product, a refractory product and the use therof |
| CN107162604A (en) * | 2017-04-27 | 2017-09-15 | 无锡市南方耐材有限公司 | A kind of high temperature, which is burnt till, exempts from dipping sliding plate brick and preparation method thereof |
| CN110790567A (en) * | 2019-12-06 | 2020-02-14 | 马鞍山利尔开元新材料有限公司 | Al addition4SiC4Slag-stopping sliding plate brick of ternary non-oxide converter and preparation method thereof |
| CN111423222A (en) * | 2020-03-23 | 2020-07-17 | 锦州集信高温材料有限公司 | Method for producing chrome corundum brick for non-ferrous metal smelting fuming furnace or side-blown furnace with reduction reaction resistance and thermal shock resistance |
| CN111807822A (en) * | 2020-07-21 | 2020-10-23 | 河南熔金高温材料股份有限公司 | Aluminum-zirconium-carbon sliding plate added with aluminum-silicon alloy and fired at low temperature and production method thereof |
Family Cites Families (4)
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| US5335833A (en) * | 1992-09-14 | 1994-08-09 | Vesuvius Crucible Company | Zirconia graphite slide gate plates |
| JP2002113568A (en) * | 2000-08-03 | 2002-04-16 | Toshiba Ceramics Co Ltd | Plate for slide gate |
| CN1176043C (en) * | 2002-11-06 | 2004-11-17 | 巩义市第五耐火材料总厂 | Microporous corundum brick and its preparation method |
| CN1280231C (en) * | 2004-07-27 | 2006-10-18 | 西安秦翔科技有限责任公司 | Lining material composition of mains frequency core induction melt furnace |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774820A (en) * | 2010-02-26 | 2010-07-14 | 卫辉熔金高温材料有限责任公司 | Slide plate refractory with silicon nitride added and production method thereof |
| CN101774820B (en) * | 2010-02-26 | 2012-08-22 | 卫辉熔金高温材料有限责任公司 | Slide plate refractory with silicon nitride added and production method thereof |
| CN102030548A (en) * | 2010-11-08 | 2011-04-27 | 无锡市南方耐材有限公司 | Metal ceramic combination sintering free low carbon sliding plate brick and preparation method thereof |
| CN102030548B (en) * | 2010-11-08 | 2013-01-30 | 无锡市南方耐材有限公司 | Metal ceramic combination sintering free low carbon sliding plate brick and preparation method thereof |
| CN102603322A (en) * | 2012-03-15 | 2012-07-25 | 宝山钢铁股份有限公司 | Unfired aluminum-zirconium-carbon slide plate added with silica micro-powder and method for preparing unfired aluminum-zirconium-carbon slide plate |
| WO2016128082A1 (en) * | 2015-02-09 | 2016-08-18 | Refractory Intellectual Property Gmbh & Co. Kg | Batch composition for producing a refractory product, method for producing a refractory product, refractory product, and use of a refractory product |
| EP3053897A1 (en) * | 2015-02-09 | 2016-08-10 | Refractory Intellectual Property GmbH & Co. KG | Formulation and process for the manufacture of a refractory product, a refractory product and the use therof |
| US11198647B2 (en) | 2015-02-09 | 2021-12-14 | Refractory Intellectual Property Gmbh & Co. Kg | Batch for production of a refractory product, a process for the production of a refractory product, a refractory product as well as the use of a refractory product |
| CN107162604A (en) * | 2017-04-27 | 2017-09-15 | 无锡市南方耐材有限公司 | A kind of high temperature, which is burnt till, exempts from dipping sliding plate brick and preparation method thereof |
| CN107162604B (en) * | 2017-04-27 | 2021-03-05 | 无锡市南方耐材有限公司 | Medium-high temperature fired impregnation-free sliding plate brick and preparation method thereof |
| CN110790567A (en) * | 2019-12-06 | 2020-02-14 | 马鞍山利尔开元新材料有限公司 | Al addition4SiC4Slag-stopping sliding plate brick of ternary non-oxide converter and preparation method thereof |
| CN111423222A (en) * | 2020-03-23 | 2020-07-17 | 锦州集信高温材料有限公司 | Method for producing chrome corundum brick for non-ferrous metal smelting fuming furnace or side-blown furnace with reduction reaction resistance and thermal shock resistance |
| CN111807822A (en) * | 2020-07-21 | 2020-10-23 | 河南熔金高温材料股份有限公司 | Aluminum-zirconium-carbon sliding plate added with aluminum-silicon alloy and fired at low temperature and production method thereof |
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Granted publication date: 20080130 Termination date: 20130705 |