WO2007048406A1 - Feuerfeste formkörper oder massen und verfahren zu deren herstellung - Google Patents
Feuerfeste formkörper oder massen und verfahren zu deren herstellung Download PDFInfo
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- WO2007048406A1 WO2007048406A1 PCT/DE2006/001911 DE2006001911W WO2007048406A1 WO 2007048406 A1 WO2007048406 A1 WO 2007048406A1 DE 2006001911 W DE2006001911 W DE 2006001911W WO 2007048406 A1 WO2007048406 A1 WO 2007048406A1
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- carbon
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- titanium
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
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- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9684—Oxidation resistance
Definitions
- the invention relates to refractory moldings or masses and to a process for obtaining a high strength binder phase in magnesium oxide, alumina, zirconium mullite, zirconia, magnesia aluminate spinel, bauxite, yttria, silicon carbide, silicon nitride, boron nitride or mixtures thereof carbonaceous products , such as pressed carbon bonded bricks, carbon bonded gate plates or carbon bonded dipping spouts or cast carbonaceous and / or carbonaceous products or carbon bonded plugs, with improved mechanical, thermal and chemical properties.
- the method can also be used according to the invention for the production of refractory products without carbon additives.
- Carbon-bonded products are widely used as liners in metallurgical vessels, e.g. B. as carbon-bonded Magnesiasteine in the converter, or as key components, such as. B. immersion nozzles or slide plates or plugs or runners in the continuous casting area.
- Carbon-bonded refractory products continue to be used in the blast furnace area, in transport vessels such.
- binders are preferably phenolic resins, such as. As resoles or novolaks, Artpeche such.
- metallic additives such.
- DE 199 35 251 A1 discloses the use of TiO 2 -containing particulate materials as an additive for refractory products, in which the TiC ⁇ -containing materials are added to the mixture of additives and binders. In this case, the crystalline TiO 2 is retained in the product. Upon penetration of liquid slag or melt, the proportion of TiO 2 is dissolved and reacts to titanium nitride or titanium carbonitride. This reaction adversely affects both the stability of this refractory product and the slag or melt contacting this product.
- EP 1,275,626 A1 discloses carbon bonded refractory materials consisting of a mixture of 5-85% by weight of carbon, 5-15% by weight of aluminum oxide or a mixture of aluminum oxide and other materials, 5-15% by weight of metallic silicon, 5-20% by weight. % Ti, TiN, TiCN and / or TiC. This starting mixture is added to the binder, kneaded, formed, and the mixture is compressed into a shaped body, which is then carbonized at 125O 0 C. Regardless of the Ti additives being expensive, the crystalline Ti addition is retained in the refractories.
- the invention has for its object to provide refractory moldings or masses with or without carbon additives, which are thermoplastically deformable and also have improved thermomechanical and oxidation behavior and a high-strength binder phase.
- the object is achieved by refractory moldings or compositions based on a coked mixture of oxidic and / or non-oxidic and / or carboniferous refractory grains and a binder, the fine-grained titanium dioxide or ilmenite or FeTiO 3 or CaTiO 3 or MgTiO 3 or BaTiO 3 , or a Combination thereof, in addition particles of one or more elemental metals, are added, and in which the binding matrix contains titanium carbide and / or titanium carbonitride phases.
- the addition of fine-grained titanium dioxide or ilmenite or FeTiO 3 or CaTiO 3 or MgTiO 3 or BaTiO 3 or additionally of particles of one or more elemental metals leads to a high-strength bonding matrix with titanium carbide and / or titanium carbonitride phases of the refractory moldings or masses according to the invention. If, in addition, particles of one or more elemental metals are added, the binding matrix contains, in addition to titanium carbide and / or titanium carbonitride phases, crystalline metal carbides and / or metal oxycarbides.
- the titanium carbide and / or titanium carbonitride phases and, in the case of metal addition, furthermore stabilize the metal carbides or metal oxycarbides the refractory moldings or masses according to the invention in high-temperature use.
- the particles of one or more metals are selected from Al, Si, Ti, Mg, Fe, Mo and / or W. Besides being directly added to the binder, the particles may also be added to the mixture of refractory grains and binder.
- the refractory oxide refractory grains consist of magnesium oxide or aluminum oxide or zirconium mullite or zirconium dioxide or magnesium aluminate spinel or bauxite or yttrium oxide or mixtures of these oxides.
- the non-oxidic refractory grains consist of silicon carbide or silicon nitride or boron nitride or mixtures thereof.
- the carbonaceous refractory grains consist of graphite and / or carbon black.
- the refractory moldings or compositions are based on a coked mixture of magnesium oxide and a binder, the fine-grained titanium dioxide and elemental aluminum is added, their binding matrix titanium carbide and / or titanium carbonitride and titanium carbide (TiC), aluminum carbide (Al 4 C 3 ) and Aluminiumtitankarbid (Al 2 Ti 4 C) and Aluminiumoxicarbid (Al 2 OC) at coking temperatures up to 1000 ° C contains. At higher coking temperatures above 1500 0 C, the binder phase contains stable, crystalline titanium carbide and aluminum carbide phases.
- the refractory shaped bodies or masses are produced from a mixture of oxidic and / or non-oxidic and / or carbon-containing refractory grains and a binder based on synthetic resin and / or bitumen and / or pitch and / or pitch.
- the binder is fine-grained titanium dioxide or Ilmem ' t or FeTiO 3 or CaTiO 3 or MgTiO 3 or BaTiO 3 , or additionally particles of one or more elemental metals thereof added and coked the mixture at a temperature at which in the binding matrix titanium carbide and / or titanium carbonitride phases and / or metal carbide and / or metal oxycarbide and / or other carbides and / or oxy carbides depending on the metallic addition initu be generated.
- the coking temperature is better than 1200 0 C. More titanium carbide and / or Titankarbonitridphasen also occur at higher temperatures or during use at the use temperatures.
- ilmenite and / or and / or FeTiO 3 and / or CaTiO 3 and / or MgTiO 3 and / or BaTiO 3 with or without TiO 2 binder to the coking temperature is less than 1200 0 C, preferably less than 1000 ° C.
- particles of one or more elemental metals selected from Al, Si, Ti, Y, Mg, Fe, Mo or W are added to the mixture and / or the binder.
- the coking temperature is less than 1200 ° C.
- the refractory oxide refractory grains consist of magnesium oxide or aluminum oxide or zirconium mullite or zirconium dioxide or magnesium aluminate spinel or bauxite or yttrium oxide or mixtures of these oxides.
- the non-oxidic refractory grains consist of silicon carbide or silicon nitride or boron nitride or mixtures thereof.
- the carbonaceous refractory grains consist of graphite and / or carbon black.
- the binder is fine-grained titanium dioxide and / or ilmenite and / or FeTiQ and / or CaTiO 3 and / or MgTiO 3 and / or BaTiO 3 in an amount of not more than 2 wt.%, Preferably 0.3 to 1.5 wt.%.
- the elemental metal is added in an amount of at most 3% by weight, based on the mixture used, preferably 1 to 2% by weight.
- TiO 2 fine-grained titanium dioxide
- TiO 2 fine-grained, titanium-containing materials or fine-grained, titanium-containing materials with or without a metal based on Al, Mg, Si, Ti, Fe, Y or mixtures thereof the binder on resin, bitumen or Kunststoffpech or pitch base or mixtures thereof, and with further graphite grains with or without carbon black and with different fractions of refractory oxides, such.
- MgO or Al 2 O 3 or ZrO 2 mixed in an intensive mixer and transferred into products by means of pressing or casting with or without the addition of water, plasticizer or cement.
- the products obtained after coking to 1000 ° C or after a coking process between 1300 and 1500 ° C a binder phase, which has excellent mechanical, thermal and chemical properties.
- titanium-containing raw materials or titanium-containing materials serve ilmenite, FeTiQ, CaTiO 3 , MgTiO 3 , BaTiO 3 .
- iron titanates or titanium iron ores both reactions for the production of graphite below 1000 ° C and reactions for the production of titanium carbide and / or titanium carbonitride in the binder phase can be favored.
- the addition of fine-grained titanium dioxide and / or ilmenite and / or FeTiO 3 and / or CaTiO 3 and / or MgTiO 3 and / or BaTiO 3 and additionally of particles of one or more elemental metals exclusively to the binder leads to a high-strength binding matrix of refractory moldings or masses according to the invention with titanium carbide and / or titanium carbonitride phases or additionally with metal carbide and / or metal oxycarbide in the case of metal addition.
- the in-situ produced titanium carbide and / or titanium carbonitride phases and / or metal carbides and / or metal oxycarbides in the binding matrix improve the mechanical, thermal and chemical properties of the refractory shaped bodies or masses according to the invention in high-temperature use. In addition, they increase their creep stability.
- the binder phase is the weakest link in the structure.
- the binding phase is reinforced according to the proposed route.
- the phases produced according to the invention remain crystalline even at higher coking or operating temperatures. At higher coking temperatures above 1500 0 C form stable, crystalline titanium carbide and metal carbide phases.
- the grain size of the titanium dioxide and / or ilmenite and / or and / or FeTiO 3 and / or CaTiO 3 and / or MgTiO 3 and / or BaTiO 3 is less than 5 microns, preferably less than 2 microns.
- the particle size of the added metal is between 5 to 150 microns.
- the refractory moldings or compositions based on a mixture of magnesium oxide and a binder, the fine-grained titanium dioxide and elemental aluminum is added, prepared and coked to 1000 ° C.
- the moldings or masses thus produced contain titanium carbide and / or titanium carbonitride phases as well as titanium carbide (TiC), aluminum carbide (Al 4 C 3 ) and aluminum titanium carbide (Al 2 Ti 4 C) and aluminum oxycarbide (Al 2 OC) in the binding matrix.
- Cylindrical laboratory samples 50 mm in diameter and 50 mm in height are prepared from three mixtures by means of uniaxial pressing at a pressure of 120 MPa. In Tab.l the mixtures are listed.
- TiC 0; 7 No j3 titanium carbonitride
- TiCN titanium carbonitride
- the binder phase predominantly consists of aluminum carbide and titanium carbide. According to the invention, these two phases in the binding matrix impart to the carbon-bonded product a significantly higher oxidation resistance, mechanical strength and thermal shock resistance as compared to a resin-bonded product with sole aluminum-containing additives, even from 1000 ° C.
- Blend 1 is a comparative blend of the prior art.
- the mixtures 2 and 3 have significantly lower oxidation depths and the mixture 3 in addition to excellent strength.
- the mechanical, thermal and chemical properties of the mixtures 2 and 3 with the addition of titanium dioxide in the binder are particularly enhanced at the high temperatures above 1500 ° C due to the pronounced formation at higher temperatures of the very stable Titarbarbid- and Titankarbonitridphasen in the binding matrix.
- the sole addition of titanium dioxide can give significant benefits to the refractory product due to the significantly higher oxidation resistance and stability of the titanium carbonitride phase as compared to the aluminum carbide phase.
- FIG. 1 shows a SEM image of an offset of the coked mixture 2 with TiCN phases.
- the grain size of the TiCN generated in situ is in the nanometer range. This also gives high strength of the binder phase, which is thus strengthened mechanically and thermomechanically.
- Fig. 2 shows MgO-C carbonaceous products coked at 1000 ° C and after an oxidation resistance test at 1200 ° C in air for 3 hours, (from left to right) MgO-C product on novolak binder base without additives, with Al - Addition, with Ti ⁇ 2 additive and with Al and TiÜ 2 addition.
- the sole addition of TiO 2 reduces the decarburization / oxidation depth.
- the combination of TiO 2 and AI addition further enhances oxidation resistance. There are almost no signs of decarburization.
- Figures 3 and 4 show SEM images of fracture surfaces of the binding matrix of mixture 3 with Al and TiQ 2 additions.
- the resulting dumbbell-shaped structures of aluminum carbide, aluminum oxycarbide and titanium carbide give the refractory products excellent thermo-mechanical properties including oxidation and corrosion resistance.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP06818036A EP1957426A1 (de) | 2005-10-29 | 2006-10-27 | Feuerfeste formkörper oder massen und verfahren zu deren herstellung |
US12/091,956 US20080280152A1 (en) | 2005-10-29 | 2006-10-27 | Fireproof Molded Articles or Materials and Method for the Production Thereof |
BRPI0618082-5A BRPI0618082A2 (pt) | 2005-10-29 | 2006-10-27 | artigos moldados ou massas resistentes ao fogo e processo para a sua preparação |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102005051953A DE102005051953B3 (de) | 2005-10-29 | 2005-10-29 | Verfahren zur Herstellung von feuerfesten Formkörpern oder Massen |
DE102005051953.9 | 2005-10-29 |
Publications (1)
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WO2007048406A1 true WO2007048406A1 (de) | 2007-05-03 |
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PCT/DE2006/001911 WO2007048406A1 (de) | 2005-10-29 | 2006-10-27 | Feuerfeste formkörper oder massen und verfahren zu deren herstellung |
Country Status (7)
Country | Link |
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US (1) | US20080280152A1 (de) |
EP (1) | EP1957426A1 (de) |
CN (1) | CN101356136A (de) |
BR (1) | BRPI0618082A2 (de) |
DE (1) | DE102005051953B3 (de) |
RU (1) | RU2008121607A (de) |
WO (1) | WO2007048406A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008015259A1 (de) * | 2006-08-02 | 2008-02-07 | Sachtleben Chemie Gmbh | Titanhaltiger zuschlagstoff |
WO2008068350A1 (de) * | 2006-12-08 | 2008-06-12 | Sachtleben Chemie Gmbh | Titanhaltige formkörper |
WO2009077395A2 (en) * | 2007-12-17 | 2009-06-25 | Evonik Degussa Gmbh | Mix and refractory product having a high hydration resistance produced therefrom |
CN102049464A (zh) * | 2011-01-26 | 2011-05-11 | 东风汽车有限公司 | 实型铸造专用涂料及其制备方法 |
WO2012022343A1 (de) * | 2010-08-03 | 2012-02-23 | Sachtleben Chemie Gmbh | Koks- und titanhaltiger zuschlagstoff und dessen verwendung zur reparatur der auskleidung von metallurgischen gefässen |
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WO2010024377A1 (ja) * | 2008-08-29 | 2010-03-04 | 昭和電工株式会社 | 表面被覆サーメット部材及びその製造方法 |
CN101475390B (zh) * | 2009-01-16 | 2012-05-02 | 成都蜀冶新材料有限责任公司 | 莫来石结合铝锆质耐火浇注料及其使用方法 |
CN101514493B (zh) * | 2009-02-27 | 2011-05-11 | 山东大学 | 原位生长碳氮化钛系晶须材料及其制备方法 |
CN106829925A (zh) * | 2009-07-17 | 2017-06-13 | 西南纳米科技公司 | 用于制备多壁碳纳米管的催化剂和方法 |
CN102992805B (zh) * | 2012-11-27 | 2014-12-10 | 方大炭素新材料科技股份有限公司 | 一种高导热超微孔炭砖及其制备方法 |
CN103350446A (zh) * | 2013-08-01 | 2013-10-16 | 三门峡阳光铸材有限公司 | 一种铸造用纤维浇口杯的制备方法 |
DE102016100810A1 (de) * | 2016-01-19 | 2017-07-20 | Deutsche Edelstahlwerke Gmbh | Feuerfestwerkstoff und dessen Verwendung |
CN107344824A (zh) * | 2017-07-27 | 2017-11-14 | 合肥伊只门窗有限公司 | 一种隔音效果好的防火门芯板材料及其制备方法 |
WO2019156845A1 (en) | 2018-02-09 | 2019-08-15 | Vesuvius Usa Corporation | Refractory compositions and in situ anti-oxidation barrier layers |
CN113800923A (zh) * | 2021-08-30 | 2021-12-17 | 中国科学院金属研究所 | 防结瘤材料、浸入式水口内衬、浸入式水口及其制备方法 |
CN114014638A (zh) * | 2021-09-10 | 2022-02-08 | 河南竹林庆州耐火材料有限公司 | 一种有效抵抗富钛熔渣强烈侵蚀的镁碳砖制备方法 |
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-
2005
- 2005-10-29 DE DE102005051953A patent/DE102005051953B3/de not_active Expired - Fee Related
-
2006
- 2006-10-27 EP EP06818036A patent/EP1957426A1/de not_active Withdrawn
- 2006-10-27 CN CNA2006800404884A patent/CN101356136A/zh active Pending
- 2006-10-27 BR BRPI0618082-5A patent/BRPI0618082A2/pt not_active Application Discontinuation
- 2006-10-27 WO PCT/DE2006/001911 patent/WO2007048406A1/de active Application Filing
- 2006-10-27 RU RU2008121607/03A patent/RU2008121607A/ru not_active Application Discontinuation
- 2006-10-27 US US12/091,956 patent/US20080280152A1/en not_active Abandoned
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FR2338911A1 (fr) * | 1976-01-26 | 1977-08-19 | Shinagawa Refractories Co | Matiere refractaire dont le liant contient du nitrure de titane, du carbure de silicium et de l'alumine formes in situ |
EP0323010A2 (de) * | 1987-12-28 | 1989-07-05 | Shinagawa Refractories Co., Ltd. | Kohlenstoff enthaltende Feuerfestzusammensetzung |
JPH06219822A (ja) * | 1993-01-28 | 1994-08-09 | Toshiba Ceramics Co Ltd | マグネシア・カーボンれんが |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2008015259A1 (de) * | 2006-08-02 | 2008-02-07 | Sachtleben Chemie Gmbh | Titanhaltiger zuschlagstoff |
US8287837B2 (en) | 2006-08-02 | 2012-10-16 | Sachtleben Chemie Gmbh | Titanium-containing additive |
WO2008068350A1 (de) * | 2006-12-08 | 2008-06-12 | Sachtleben Chemie Gmbh | Titanhaltige formkörper |
WO2009077395A2 (en) * | 2007-12-17 | 2009-06-25 | Evonik Degussa Gmbh | Mix and refractory product having a high hydration resistance produced therefrom |
WO2009077395A3 (en) * | 2007-12-17 | 2009-10-01 | Evonik Degussa Gmbh | Mix and refractory product having a high hydration resistance produced therefrom |
CN101903305A (zh) * | 2007-12-17 | 2010-12-01 | 赢创德固赛有限公司 | 混合物和由此制备的具有高抗水化性的耐火产品 |
US8450229B2 (en) | 2007-12-17 | 2013-05-28 | Evonik Degussa Gmbh | Mix and refractory product having a high hydration resistance produced therefrom |
CN101903305B (zh) * | 2007-12-17 | 2014-06-11 | 赢创德固赛有限公司 | 混合物和由此制备的具有高抗水化性的耐火产品 |
WO2012022343A1 (de) * | 2010-08-03 | 2012-02-23 | Sachtleben Chemie Gmbh | Koks- und titanhaltiger zuschlagstoff und dessen verwendung zur reparatur der auskleidung von metallurgischen gefässen |
CN102049464A (zh) * | 2011-01-26 | 2011-05-11 | 东风汽车有限公司 | 实型铸造专用涂料及其制备方法 |
Also Published As
Publication number | Publication date |
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EP1957426A1 (de) | 2008-08-20 |
BRPI0618082A2 (pt) | 2011-08-16 |
US20080280152A1 (en) | 2008-11-13 |
DE102005051953B3 (de) | 2007-06-06 |
RU2008121607A (ru) | 2009-12-10 |
CN101356136A (zh) | 2009-01-28 |
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