WO1992016472A1 - Procede de preparation d'un materiau composite ignifuge - Google Patents

Procede de preparation d'un materiau composite ignifuge Download PDF

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Publication number
WO1992016472A1
WO1992016472A1 PCT/EP1992/000617 EP9200617W WO9216472A1 WO 1992016472 A1 WO1992016472 A1 WO 1992016472A1 EP 9200617 W EP9200617 W EP 9200617W WO 9216472 A1 WO9216472 A1 WO 9216472A1
Authority
WO
WIPO (PCT)
Prior art keywords
mixture
carbon
mullite
aluminum
corundum
Prior art date
Application number
PCT/EP1992/000617
Other languages
German (de)
English (en)
Inventor
Gert KÖNIG
Bernd Wegener
Arne Kassebrock
Michael Glaveris
Gerd Heintges
Original Assignee
Dolomitwerke Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dolomitwerke Gmbh filed Critical Dolomitwerke Gmbh
Publication of WO1992016472A1 publication Critical patent/WO1992016472A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C04B35/65—Reaction sintering of free metal- or free silicon-containing compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/28—Plates therefor
    • B22D41/30—Manufacturing or repairing thereof
    • B22D41/32—Manufacturing or repairing thereof characterised by the materials used therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/52—Manufacturing or repairing thereof
    • B22D41/54—Manufacturing or repairing thereof characterised by the materials used therefor
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/597—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon oxynitride, e.g. SIALONS

Definitions

  • the invention relates to a method for producing a refractory composite material by mixing ceramic materials with a graphite-containing binder, pressing the mixture into moldings, drying and firing.
  • Refractory composite materials generally consist of roughly 2/3 coarse-grained raw materials with a grain size> 0.1 mm and a binding matrix formed from fine particles. Mainly MgO, mullite, corundum etc. are used as granular refractories.
  • the refractory composite materials are usually subject to wear and tear due to erosion, corrosion and oxidation upon contact with hot metals and slags. Corrosion primarily starts with the binding matrix, which is why almost all development efforts are aimed at optimizing the binding matrix. It is therefore less the overall composition of a refractory stone that determines the corrosion resistance and more the type of binding phase. This also plays a decisive role in the thermal shock resistance of a refractory product, which among other things by adding certain phases such as graphite.
  • Immersion spouts for (steel) continuous casting, slide plates of slide closures on pans are particularly exposed to temperature changes, steel and slag corrosion as well as deposits of AI 0 (clogging) made of corundum and graphite (coarse grain) with a binding matrix made of (fine) carbon.
  • This binding matrix is produced from pitch, synthetic resin or the like by cracking.
  • Slider plates are impregnated with pitch or the like because of their particularly high temperature shock load and for better sliding action.
  • the fine carbon bond, which is created from pitch or synthetic resin, is very good for resistance to slag, but is very badly attacked by liquid steel and atmospheric oxygen.
  • the object of the present invention is now to develop a material which has a bond which, while maintaining good resistance to temperature changes guaranteed by graphite, has a better resistance to the erosive and corrosive attack of hot metals, such as steel, and of slag and against oxidation than the previously common carbon-bonded ceramics and which can dispense with environmentally harmful substances such as pitch.
  • corundum which is wholly or partly replaced by at least one substance from the group consisting of chamotte, ZrO, spinel, SiO, SiC, mullite, chrome ore, MgO, zirconium mullite, and with 2 - ⁇ % aqueous solution of an organic binder and with 1 -4% water, after drying to press moisture, pressed to shaped bodies, dried and in a nitrogen atmosphere.
  • Sphere is heated and heated under nitrogen in the temperature range of 1200 to 1600 C until a binding phase consisting of SiAlON has formed
  • a preferred mixture consists of (in% by weight)
  • corundum which is wholly or partly replaced by at least one material made from chamotte, ZrO,
  • Heating for nitriding is preferably carried out in the temperature range from 1350 to 1500 C.
  • the durability of the ceramic material is considerably improved by the creation of a SiAlON bond that is resistant to steel and oxygen while maintaining good temperature change resistance guaranteed by graphite.
  • the corrosion resistance of the SiAlON bond can be increased by installing BN.
  • the amount provided is 3 to 30% BN, preferably 5 to 15% BN as a replacement for a corresponding amount of all other mixture fractions.
  • Natural graphite, carbon black or electrographite can be used as carbon.
  • SiAlON silicon aluminum oxynitride
  • Alumina and aluminum at a temperature in the range of 1300 to 1400 C is already in the
  • EP-PS 0242 849 describes a carbon-bonded refractory body, produced from a mixture of grains of carbon, SiAlON, antioxidants such as SiC, SiO, Si, as well as corundum or other refractory
  • the carbon mainly consists of graphite and the smaller part of a carbon-containing binder, such as pitch or synthetic resin, which changes into fine carbon when fired under a reducing atmosphere. Slag zones of immersion spouts, crucibles, slide plates are proposed for use there. JP-PS 60 / 145963A2 (85/145963) describes tear-off rings for horizontal continuous casting, consisting of 60 to
  • EP-PS 0 153 000 describes a composite material made of ⁇ -SiC which is bonded with SiAlON. They are produced by mixing Si, Al, SiC (without Al 0), pressing and nitriding at 1350 to 1600 C. The nitrating gas should contain enough oxygen to form SiAlON. Blast furnace lining is specified as use.
  • Binder cellulose derivatives (methyl cellulose)
  • the mixtures listed in Table 3 were pressed isostatically into tubes or pressed into sheets, dried at 120 ° C at 120 ° C / h at 1200 ° C, from 1200 to 1400 ° C at 10 ° C / h from 1400 to 1500 ° C at 30 ° C / h heated and o held at 1500 C for 12 h in a stream of nitrogen.
  • Slider plates showed an improvement in the shelf life of 1-2 batches, and the plates could be used without tar soaking.

Abstract

Selon un procédé de préparation d'un matériau composite ignifuge, on mélange les composants suivants: 4 à 16 % en poids de silicium; 1 à 8 % en poids d'aluminium; 5 à 20 % en poids d'alumine réactive; 3 à 50 % en poids de carbone, le pourcentage restant étant constitué de corindon, entièrement ou partiellement substitué par au moins un élément sélectionné dans le groupe composé de chamotte, ZrO2, spinelle, SiO2, SiC, mullite, chromite, MgO, mullite de zirconium, ainsi que 2 à 5 % en poids d'une solution aqueuse d'un liant organique et 1 à 4 % en poids d'eau. On sèche ensuite le mélange jusqu'à un degré d'humidité convenant au pressage, on forme avec le mélange des corps moulés, par pressage, et on les chauffe dans une atmosphère azotée jusqu'à une température comprise entre 1200 et 1600 °C, aussi longtemps que nécessaire pour qu'une phase liante constituée de SialON se forme.
PCT/EP1992/000617 1991-03-22 1992-03-20 Procede de preparation d'un materiau composite ignifuge WO1992016472A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914109375 DE4109375A1 (de) 1991-03-22 1991-03-22 Verfahren zur herstellung eines feuerfesten verbundwerkstoffs
DEP4109375.5 1991-03-22

Publications (1)

Publication Number Publication Date
WO1992016472A1 true WO1992016472A1 (fr) 1992-10-01

Family

ID=6427927

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/000617 WO1992016472A1 (fr) 1991-03-22 1992-03-20 Procede de preparation d'un materiau composite ignifuge

Country Status (2)

Country Link
DE (1) DE4109375A1 (fr)
WO (1) WO1992016472A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994018140A1 (fr) * 1993-02-01 1994-08-18 Nils Claussen Procede pour fabriquer des corps moules ceramiques contenant de l'alumine a grains fins, a l'aide d'aluminium pulverulent
WO1996015999A1 (fr) * 1994-11-24 1996-05-30 Savoie Refractaires Nouveaux materiaux formes de grains refractaires lies par une matrice de nitrure d'aliminium ou de sialon contenant du nitrure de titane
CN115636679A (zh) * 2022-11-03 2023-01-24 中钢洛耐科技股份有限公司 一种烧制电子陶瓷窑炉用赛隆刚玉莫来石

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330584C1 (de) * 1993-09-09 1994-09-01 Fraunhofer Ges Forschung Verfahren zur Herstellung von feuerfesten Werkstoffen
DE19936973A1 (de) * 1999-08-05 2001-02-08 Induga Industrieoefen Und Gies Vorrichtung zum Niederdruckgießen von Metallen
BRPI0413794B1 (pt) * 2003-08-22 2012-01-24 bocal de imersão para lingotamento contìnuo de aço.
US20050280192A1 (en) * 2004-06-16 2005-12-22 Graham Carson Zirconia refractories for making steel
KR101246813B1 (ko) * 2008-12-18 2013-03-26 구로사키 하리마 코포레이션 플레이트 벽돌의 제조 방법 및 플레이트 벽돌
CN105254319B (zh) * 2015-11-19 2018-02-16 长兴兴鹰新型耐火建材有限公司 一种喂料室用预制砖的浇注料及其制备方法
CN108083784B (zh) * 2018-01-29 2020-11-03 武汉科技大学 基于微晶石墨的氧化铝-碳质复合材料及其制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153000A1 (fr) * 1984-01-23 1985-08-28 The Carborundum Company Corps réfractaires en carbure de silicium ou matériaux similaires ayant une phase de liaison en nitrure de silicium modifié
ATE29710T1 (de) * 1983-02-11 1987-10-15 Shinagawa Refractories Co Kohlenstoffhaltiges feuerfestmaterial.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59152269A (ja) * 1983-02-08 1984-08-30 九州耐火煉瓦株式会社 窒化珪素系複合耐火物
JPS60145963A (ja) * 1983-12-30 1985-08-01 工業技術院長 水平連続鋳造機用ブレ−クリング及びその製造方法
KR870009789A (ko) * 1986-04-21 1987-11-30 원본미기재 탄소결합 내화체(體)

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE29710T1 (de) * 1983-02-11 1987-10-15 Shinagawa Refractories Co Kohlenstoffhaltiges feuerfestmaterial.
EP0153000A1 (fr) * 1984-01-23 1985-08-28 The Carborundum Company Corps réfractaires en carbure de silicium ou matériaux similaires ayant une phase de liaison en nitrure de silicium modifié

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994018140A1 (fr) * 1993-02-01 1994-08-18 Nils Claussen Procede pour fabriquer des corps moules ceramiques contenant de l'alumine a grains fins, a l'aide d'aluminium pulverulent
US5607630A (en) * 1993-02-01 1997-03-04 Claussen; Nils Process for the production of fine-grained ceramic bodies molded containing Al2 O3
WO1996015999A1 (fr) * 1994-11-24 1996-05-30 Savoie Refractaires Nouveaux materiaux formes de grains refractaires lies par une matrice de nitrure d'aliminium ou de sialon contenant du nitrure de titane
FR2727400A1 (fr) * 1994-11-24 1996-05-31 Savoie Refractaires Nouveaux materiaux formes de grains refractaires lies par une matrice de nitrure d'aluminium ou de sialon contenant du nitrure de titane et des particules de graphite et/ou de nitrure de bore dispersees
US5925585A (en) * 1994-11-24 1999-07-20 Savoie Refractaires Materials formed by refractory grains bound in a matrix of aluminum nitride or sialon containing titanium nitride
CN115636679A (zh) * 2022-11-03 2023-01-24 中钢洛耐科技股份有限公司 一种烧制电子陶瓷窑炉用赛隆刚玉莫来石
CN115636679B (zh) * 2022-11-03 2023-08-11 中钢洛耐科技股份有限公司 一种烧制电子陶瓷窑炉用赛隆刚玉莫来石

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Publication number Publication date
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