WO1984000747A1 - A refractory composition - Google Patents

A refractory composition Download PDF

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Publication number
WO1984000747A1
WO1984000747A1 PCT/GB1983/000204 GB8300204W WO8400747A1 WO 1984000747 A1 WO1984000747 A1 WO 1984000747A1 GB 8300204 W GB8300204 W GB 8300204W WO 8400747 A1 WO8400747 A1 WO 8400747A1
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WO
WIPO (PCT)
Prior art keywords
composition
refractory
fibres
fibre
organic fibres
Prior art date
Application number
PCT/GB1983/000204
Other languages
English (en)
French (fr)
Inventor
Colin Richmond
Michael Edward Bennet
Original Assignee
Morgan Refractories Ltd
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 Morgan Refractories Ltd filed Critical Morgan Refractories Ltd
Priority to DE8383902572T priority Critical patent/DE3365448D1/de
Priority to AT83902572T priority patent/ATE21506T1/de
Publication of WO1984000747A1 publication Critical patent/WO1984000747A1/en

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    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/6303—Inorganic additives
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/101—Refractories from grain sized mixtures
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    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62625—Wet mixtures
    • C04B35/6263—Wet mixtures characterised by their solids loadings, i.e. the percentage of solids
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    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/6303—Inorganic additives
    • C04B35/6316—Binders based on silicon compounds
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
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    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • C04B38/067—Macromolecular compounds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/10—Monolithic linings; Supports therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • 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
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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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
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
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    • C04B2235/40—Metallic constituents or additives not added as binding phase
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • 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
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/402—Aluminium
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • 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
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/448—Sulphates or sulphites
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/5212—Organic
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    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/526—Fibers characterised by the length of the fibers
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5463—Particle size distributions
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
    • F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
    • F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
    • F27D1/1642—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus

Definitions

  • a REFRACTORY COMPOSITION This invention relates to compositions for in situ firing to form a refractory lining and particularly relates to additives to such compositions to improve spalling resistance.
  • a composition for in situ firing to form a refractory lining comprises a refractory aggregate, a refractory clay binder, a hydrolytic substance and short length organic fibres.
  • hydrolytic substance is meant any substance that reacts with water to break the hydrogen oxygen bond or bonds and produce a solid and/or gaseous reaction product. .-
  • the hydrolytic substances act to help reduce the water content of the mixed but unfired lining and the short length fibres may act to convey water out of the lining before firing and, during firing, burn away to leave fine capillary bores in the lining that permit and encourage thf- escape of water vapour and steam.
  • the hydrolytic substance is up to 0.1% by weight of a finely divided metallic powder and the organic fibres are up to 0.1% by weight of a hydrophilic fibre.
  • the metallic powder is aluminium powder though other metal such as magnesium, zinc and ferrosilicon could be used. It is also believed that other reactive materials such as nitrides and carbides which would generate gases in situ may be effective in place of metallic powder as the hydrophylic substance.
  • the fibre is of approximately 6 mm in length, short length fibres being less effective and much longer fibres giving mixing problems. The fibres are preferably less than 40 JU. thick, much thicker fibres are unsuitable as too much fibre is required to obtain the required effect; optimum fibre thickness is thought to be 20 - 25AA .
  • the fibre is hydrophilic.
  • a refractory mixture comprising 73 parts per 100 of bauxite in aggregate and fines; 10 parts per 100 of alumina fines; 5 parts per 100 of kyanite; 4 parts per 100 of clay binder and 8 parts per 100 of a hardening agent (hydraulic cement); with 0.2 parts per 100 of a deflocculating agent: 7% by weight of water is added to produce a composition with 7 parts of water to every IOO parts of solid.
  • CM?_ v,:?o Samples were produced from the mixture in the form of 76 mm cubes, were permitted to cure for 24 hours and a series of any one type of sample were then inserted into an experimental furnace at a series of increasing temperatures with the first temperature at which spalling of a sample occurred being noted.
  • OMPI effects on the refractory properties Zinc can be used as the metal, but its presence can, in some applications, cause fluxing problems in the fired refractories. 5
  • the chosen fibre should completely degrade by 250 degrees C without leaving any residue, i.e. hydrocarbon polymeric fibres are preferred to materials such as polyamides which can leave a significant charred residue upon thermal degradation. lO
  • the mixtures of the present invention have the advantages that by using lower fibre contents than have hitherto been disclosed the effect of the stiffening of the mix by the addition of the fibre is minimised, and therefore the need to add additional water to restore the flow 15 properties of the mix is avoided.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Products (AREA)
  • Compositions Of Oxide Ceramics (AREA)
PCT/GB1983/000204 1982-08-20 1983-08-15 A refractory composition WO1984000747A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8383902572T DE3365448D1 (en) 1982-08-20 1983-08-15 A refractory composition
AT83902572T ATE21506T1 (de) 1982-08-20 1983-08-15 Feuerfeste zusammensetzung.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8223995 1982-08-20

Publications (1)

Publication Number Publication Date
WO1984000747A1 true WO1984000747A1 (en) 1984-03-01

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ID=10532426

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1983/000204 WO1984000747A1 (en) 1982-08-20 1983-08-15 A refractory composition

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Country Link
US (1) US4588442A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0116583B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS59501406A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU560597B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3365448D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO (1) WO1984000747A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA836126B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759533A (en) * 1986-08-11 1988-07-26 Dresser Industries, Inc. Heat-insulating boards
GB2233323A (en) * 1989-06-30 1991-01-09 Glaverbel Process of forming a porous refractory mass and composition of matter for use in such process.
EP0425139A1 (en) * 1989-10-23 1991-05-02 Minerals Technologies Inc. Lightweight tundish refractory compositions
EP0481696A1 (en) * 1990-10-16 1992-04-22 Foseco International Limited Composition for producing fired refractory articles
US5229337A (en) * 1989-06-30 1993-07-20 Glaverbel Composition of matter for use in a process of forming a porous refractory mass

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN88101343A (zh) * 1987-02-09 1988-09-14 三井石油化学工业株式会社 片状成型材料和以其为一层的层压制品
US5338712A (en) * 1993-02-04 1994-08-16 Timmino Ltd. Production of non-explosive fine metallic powders
EP1888484A2 (de) * 2005-05-30 2008-02-20 Refractory Intellectual Property GmbH & Co. KG Feuerfestes keramisches produkt

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1374910A (en) * 1918-05-31 1921-04-19 Lava Crucible Company Of Pitts Method of making clay and graphite crucibles
FR2252312A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-11-26 1975-06-20 Ho Ganas Ab
GB1541819A (en) * 1976-11-26 1979-03-07 Taiko Rozai Co Ltd Refractory compositions
EP0082124A1 (en) * 1981-12-15 1983-06-22 Höganäs AB Process for repairing refractory linings
GB2111970A (en) * 1981-12-14 1983-07-13 Babcock & Wilcox Co Water containing refractories and methods of removing moisture therefrom

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931535A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-07-22 1974-03-22
JPS5249406B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-10-06 1977-12-17
BE826610A (fr) * 1974-04-02 1975-06-30 Garnissage exothermique pour applications metallurgiques
JPS51116119A (en) * 1975-04-04 1976-10-13 Nittetsu Kinzoku Kogyo Kk Heating type inside lining material of pouring basin
JPS5650172A (en) * 1979-09-28 1981-05-07 Harima Refractories Co Ltd Formless refractories
JPS5933549B2 (ja) * 1980-11-10 1984-08-16 大光炉材株式会社 不定形耐火物

Patent Citations (5)

* Cited by examiner, † Cited by third party
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US1374910A (en) * 1918-05-31 1921-04-19 Lava Crucible Company Of Pitts Method of making clay and graphite crucibles
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US4759533A (en) * 1986-08-11 1988-07-26 Dresser Industries, Inc. Heat-insulating boards
GB2233323A (en) * 1989-06-30 1991-01-09 Glaverbel Process of forming a porous refractory mass and composition of matter for use in such process.
US5061526A (en) * 1989-06-30 1991-10-29 Glaverbel Process for forming a porous refractory mass
GB2233323B (en) * 1989-06-30 1993-04-21 Glaverbel Process of forming a porous refractory mass and composition of matter for use in such process
US5229337A (en) * 1989-06-30 1993-07-20 Glaverbel Composition of matter for use in a process of forming a porous refractory mass
EP0425139A1 (en) * 1989-10-23 1991-05-02 Minerals Technologies Inc. Lightweight tundish refractory compositions
EP0481696A1 (en) * 1990-10-16 1992-04-22 Foseco International Limited Composition for producing fired refractory articles

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EP0116583A1 (en) 1984-08-29
AU560597B2 (en) 1987-04-09
ZA836126B (en) 1984-04-25
EP0116583B1 (en) 1986-08-20
JPS59501406A (ja) 1984-08-09
DE3365448D1 (en) 1986-09-25
US4588442A (en) 1986-05-13
JPH0422865B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-04-20
AU1882383A (en) 1984-03-07

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