WO2004031099A1 - Ladrillo refractario no cocido conteniendo grafito para hornos de la industria del cemento y su utilizacion - Google Patents

Ladrillo refractario no cocido conteniendo grafito para hornos de la industria del cemento y su utilizacion Download PDF

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Publication number
WO2004031099A1
WO2004031099A1 PCT/ES2002/000468 ES0200468W WO2004031099A1 WO 2004031099 A1 WO2004031099 A1 WO 2004031099A1 ES 0200468 W ES0200468 W ES 0200468W WO 2004031099 A1 WO2004031099 A1 WO 2004031099A1
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Prior art keywords
cement industry
kilns
graphite
percentage
containing graphite
Prior art date
Application number
PCT/ES2002/000468
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English (en)
French (fr)
Inventor
Pedro FAJARDO SOLÁ
Original Assignee
Fajardo Sola Pedro
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
Priority to AU2002340523A priority Critical patent/AU2002340523A1/en
Priority to CA002542275A priority patent/CA2542275C/en
Priority to AT02774789T priority patent/ATE512943T1/de
Priority to CNB028298667A priority patent/CN1309679C/zh
Priority to PCT/ES2002/000468 priority patent/WO2004031099A1/es
Priority to DK02774789.8T priority patent/DK1564195T3/da
Application filed by Fajardo Sola Pedro filed Critical Fajardo Sola Pedro
Priority to EP02774789A priority patent/EP1564195B1/en
Priority to ES02774789T priority patent/ES2374134T3/es
Priority to PT02774789T priority patent/PT1564195E/pt
Publication of WO2004031099A1 publication Critical patent/WO2004031099A1/es
Priority to AU2010202278A priority patent/AU2010202278A1/en
Priority to CY20111100880T priority patent/CY1111976T1/el

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    • 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
    • C04B35/01—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
    • C04B35/013—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 containing carbon
    • 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
    • C04B35/01—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
    • C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
    • C04B35/043—Refractories from grain sized mixtures
    • C04B35/0435—Refractories from grain sized mixtures containing refractory metal compounds other than chromium oxide or chrome ore
    • 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
    • C04B35/626—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
    • C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
    • C04B35/62665—Flame, plasma or melting treatment
    • 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
    • C04B35/626—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
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • 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
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • 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
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
    • 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
    • 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
    • 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
    • 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
    • C04B2235/34—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
    • 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
    • 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
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides
    • 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
    • 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
    • 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
    • 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
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/425—Graphite
    • 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
    • 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
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/428—Silicon
    • 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
    • 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
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • 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
    • 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 protected in this Patent consists of an uncooked refractory brick and containing graphite for furnaces of the cement industry and its use.
  • refractory materials are widely known in the cement industry for the interior lining of the furnaces that produce said product, in order to withstand the high working temperatures, which reaches in some areas around 1,500 degrees Celsius, as well as to the continuous abrupt changes in them between 800-1,500 ° Celsius and their consequent physical-chemical reactions.
  • the various compositions of the refractory materials also entail varying degrees of hardness and resistance to deformation.
  • a refractory material of greater hardness and resistance to those already employed is achieved, and therefore of greater durability.
  • JP11201649 as glass textures, or also in relation to The arrangement of forms of the materials highlights the European Patent No. EP0911594 and the German DE19729582 of prefabricated bricks or the patent of invention of the applicant himself the Patent PCT No. WO 02/059057, all of them as prior to the invention to be presents, but generic and imprecise and as inventions all of which result in chemical compositions or forms or not applied to the specificity of the industry of the c emento, or arranged in different areas of the same cement kilns.
  • the refractory brick can be made and arranged as follows:
  • a percentage by weight of Magnesite (MgCO3) between 75-62%, preferably of a magnesium of seawater, a percentage by weight of alumina (AI2O3) between 12-20%, and a 4 - 11% Graphite.
  • the graphite purity is preferably 94% crystalline and in flakes.
  • additives improving thermal shock and thermal resistance and oxidation (in a joint composition of aluminum powder, silicon metal, silicon carbide and clay) of between 9 - 7%.
  • these total resin percentages of between 3-4% by weight percentage.
  • Figure 1 Profile projection of a rotary kiln for the cement industry with satellite coolers, in an assembly formed by a heat exchanger (1), a calcination zone (2), safety zone (3), transition zones - high and low - (4), sintering zone (5), outlet zone (6), coolers (7) furnace head (8), and flame burner lance (9).
  • Figure 2 Profile projection of a rotary kiln for the cement industry with grill cooler, in an assembly formed by a heat exchanger (1), a calcination zone (2), safety zone (3), areas of transition - high and low - (4), sintering zone (5), outlet zone (6), cooler (7), furnace head (8) and flame burner lance (9).

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

El ladrillo refractario no cocido conteniendo grafito para hornos de la industria del cemento y su utilización que constituye el objeto de esta patente permite su empleo en el interior de los mencionados hornos para contrarrestar la deformación térmica y físico-química que sufren. Su composición se basa en una combinación de un porcentaje en peso de Magnesita ( MgCO3 ) entre el 75 - 62 %, un porcentaje en peso de Alúmina ( Al2O3 ) entre un 12 - 20 %, y entre un 4 - 11 % de Grafito. Así como de aditivos mejoradores del choque térmico y la resistencia térmica y la oxidación ( en una composición conjunta de aluminio en polvo, silicio metal, carburo de silicio y arcilla ) de entre un 9 - 7 % y de resinas entre un 3 - 4 %. En su utilización, este material refractario puede ser dispuesto como recubrimiento en el interior de los hornos de cemento, en las zonas de transición - alta y baja - ( 4 ) , y en la zona de sinterización ( 5 ).

Description

LADRILLO REFRACTARIO NO COCIDO CONTENIENDO GRAFITO PARA HORNOS DE LA INDUSTRIA DEL CEMENTO Y SU UTILIZACIÓN
DESCRIPCIÓN
La invención que se protege en esta Patente, consiste en un ladrillo refractario no cocido y que contiene grafito para hornos de la industria del cemento y su utilización.
Se trata, por tanto, de un ladrillo aplicable a los recubrimientos interiores de los hornos de la industria del cemento compuesto por magnesia y alúmina conteniendo grafito en vez de cromo o hierro objeto de otras formulaciones, así como a su distribución localizada en determinadas zonas del mismo, en orden a su capacidad refractaria.
El uso de materiales refractarios, es ampliamente conocido en la industria del cemento para el recubrimiento interior de los hornos que elaboran dicho producto, con objeto de soportar las altas temperaturas de trabajo, que alcanza en algunas zonas en torno a los 1.500 grados centígrados, así como a los continuos cambios bruscos en las mismas de entre 800 -1.500° centígrados y sus consiguientes reacciones físico-químicas. Sin embargo, las diversas composiciones de los materiales refractarios conllevan también distintos grados de dureza y resistencia a su deformación. A tal efecto, con la presente invención se logra un material refractario de mayor dureza y resistencia a los ya empleados, y por tanto de mayor durabilidad. En la actualidad, ya se conocen y son utilizados diversos materiales refractarios; pero todos ellos presentan limitaciones tanto operativas como funcionales, muy especialmente con respecto a su degradación progresiva por las altas y alternantes temperaturas de los hornos, y a las reacciones químicas; con lo cual el uso de los medios ya desarrollados presentan siempre ciertas limitaciones frente a la invención que se presenta, en base a sus ventajas técnicas y económicas. Así, son ya conocidos como materiales refractarios, la incorporación de crisoles para la fabricación de vidrio, la cal, la sílice, el cromo, la magnetita, el óxido de aluminio, y los vidrios silicoaluminosos ( F.H. Norton, REFRACTARIOS, primera edición española de la editorial Blume del año 1972 ), o también las patentes japonesas n° JP11230679 sobre el juego de la porosidad en los ladrillos refractarios, la n° JP11130485 como paneles prefabricados, o la n° JP11201649 como texturas de vidrio, o también en relación a la disposición de formas de los materiales destaca la patente europea n° EP0911594 y la alemana DE19729582 de ladrillos prefabricados o bien la patente de invención del propio solicitante la Patente PCT n° WO 02/059057, todas ellas como anterioridades próximas a la invención que se presenta, pero genéricas e imprecisas y como invenciones todas de las que resultan composiciones químicas o formas o bien no aplicadas a la especificidad de la industria del cemento, o dispuestas en zonas diferentes de los mismos hornos de cemento.
Estas limitaciones se superan con la composición química de la invención - magnesita ( MgCO3 ) , alúmina ( AI2O3 ), grafito - , aditivos mejoradores y resinas ligantes; que acrecientan su operatividad y rendimiento y cuya estructura presenta una baja porosidad y alta capacidad refractaria. El ladrillo refractario puede ser realizado y dispuesto de la siguiente manera :
En relación a los componentes químicos, un porcentaje en peso de Magnesita ( MgCO3 ) entre el 75 - 62 %, preferentemente de una magnesita de agua de mar, un porcentaje en peso de Alúmina ( AI2O3 ) entre un 12 - 20 %, y un 4 - 11 % de Grafito. Siendo la pureza del Grafito preferentemente de un 94 % cristalino y en escamas. Así como un porcentaje en peso de aditivos mejoradores del choque térmico y la resistencia térmica y la oxidación ( en una composición conjunta de aluminio en polvo, silicio metal, carburo de silicio y arcilla ) de entre un 9 - 7 %. Utilizándose como ligante sobre estos porcentajes totales resinas de entre un 3 - 4 % de porcentaje en peso.
En suma, el resultado obtenido por la combinación de elementos, permite obtener una ventaja técnica con un producto de mayor dureza y de mayor resistencia al calor y a las reacciones físico-químicas, y de la que derivan notables ventajas económicas, puesto que con la nueva invención, se reduce el número de paradas de los hornos para su mantenimiento y su consiguiente restitución del material desgastado en cada periodo de trabajo, así como también conlleva, además de las mencionadas mejoras técnicas y económicas, a una ventaja en el proceso productivo para los hornos más frecuentes y extendidos - los de tipo rotatorio - y consigue una mayor resistencia y dureza. Para una mejor comprensión de las características generales anteriormente mencionadas, y en relación a su utilización, se acompañan unos dibujos a la presente invención los cuales exponen como se especifica a continuación:
Figura 1: Proyección de perfil de un horno rotativo para la industria del cemento con enfriadores satélites, en un conjunto formado por un intercambiador de calor ( 1 ) , una zona de calcinación ( 2 ), zona de seguridad ( 3 ), zonas de transición - alta y baja - ( 4 ), zona de sinterización ( 5 ), zona de salida ( 6 ), enfriadores ( 7 ) cabeza de horno ( 8 ) , y lanza quemador de llama ( 9 ).
Figura 2: Proyección de perfil de un horno rotativo para la industria del cemento con enfriador de parrilla, en un conjunto formado por un intercambiador de calor ( 1 ) , una zona de calcinación ( 2 ), zona de seguridad ( 3 ), zonas de transición - alta y baja - ( 4 ), zona de sinterización ( 5 ), zona de salida ( 6 ), enfriador ( 7 ), cabeza de horno ( 8 ) y lanza quemador de llama ( 9 ).
Y siendo su disposición en los hornos para las zonas de utilización de este ladrillo refractario: las zonas de transición - alta y baja -( 4 ) y la zona de sinterización ( 5 ).

Claims

REIVINDICACIONES
1¿ - Ladrillo refractario no cocido conteniendo grafito para hornos de la industria del cemento y su utilización para una mayor resistencia frente a la deformación térmica y físico -química caracterizado porque su composición química comprende la combinación de un porcentaje en peso de Magnesita ( MgCO3 ) entre el 75 - 62 %, un porcentaje en peso de Alúmina ( AI2O3 ) entre un 12 - 20 %, y entre un 4 - 11 % de Grafito. Así como un porcentaje en peso de aditivos mejoradores del choque térmico y la resistencia térmica y la oxidación ( en una composición conjunta de aluminio en polvo, silicio metal, carburo de silicio y arcilla ) de entre un 9 - 7 %. Utilizándose como ligante sobre estos porcentajes totales resinas entre un 3 - 4 % de porcentaje en peso.
2. - Utilización del ladrillo refractario según la Reivindicación 1 , caracterizado porque se dispone en el recubrimiento interior de los hornos de la industria del cemento en las zonas de transición - alta y baja - ( 4 ), y la zona de sinterización ( 5 ).
PCT/ES2002/000468 2002-10-03 2002-10-03 Ladrillo refractario no cocido conteniendo grafito para hornos de la industria del cemento y su utilizacion WO2004031099A1 (es)

Priority Applications (11)

Application Number Priority Date Filing Date Title
CA002542275A CA2542275C (en) 2002-10-03 2002-10-03 Unfired firebrick containing graphite for cement industry kilns and use of same
AT02774789T ATE512943T1 (de) 2002-10-03 2002-10-03 Ungebrannter ziegel mit graphit für zementindustrieöfen und dessen verwendung
CNB028298667A CN1309679C (zh) 2002-10-03 2002-10-03 用于水泥窑的含石墨未烧耐火砖及其应用
PCT/ES2002/000468 WO2004031099A1 (es) 2002-10-03 2002-10-03 Ladrillo refractario no cocido conteniendo grafito para hornos de la industria del cemento y su utilizacion
DK02774789.8T DK1564195T3 (da) 2002-10-03 2002-10-03 Ubrændt ildfast sten indeholdende grafit til ovne til cementindustrien og anvendelse af samme
AU2002340523A AU2002340523A1 (en) 2002-10-03 2002-10-03 Unfired firebrick containing graphite for cement industry kilns and use of same
EP02774789A EP1564195B1 (en) 2002-10-03 2002-10-03 Unfired firebrick containing graphite for cement industry kilns and use of same
ES02774789T ES2374134T3 (es) 2002-10-03 2002-10-03 Ladrillo refractario no cocido conteniendo grafito para hornos de la industria del cemento y su utilización.
PT02774789T PT1564195E (pt) 2002-10-03 2002-10-03 Tijolo refractário cru contendo grafite para fornos da indústria de cimento e sua utilização
AU2010202278A AU2010202278A1 (en) 2002-10-03 2010-06-02 Unfired firebrick containing graphite for cement industry kilns and use of same
CY20111100880T CY1111976T1 (el) 2002-10-03 2011-09-14 Ακαυστο πυροτουβλο που περιεχει γραφιτη για καμινια της βιομηχανιας τσιμεντου και χρηση αυτου

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RU2445290C1 (ru) * 2010-06-30 2012-03-20 Общество с ограниченной ответственностью Научно-производственное объединение "ВОСТИО-УРАЛ" (ООО НПО "ВОСТИО-УРАЛ") Огнеупорная масса
CN102731124B (zh) * 2012-07-18 2013-07-31 山国强 一种耐酸碱耐磨抗热震焦宝石砖及制造方法
PL2813481T3 (pl) 2013-06-10 2015-10-30 Refractory Intellectual Property Gmbh & Co Kg Zestaw do wytwarzania nieuformowanego ogniotrwałego wyrobu ceramicznego, sposób wytwarzania wypalanego ogniotrwałego wyrobu ceramicznego, wypalany ceramiczny wyrób ogniotrwały oraz zastosowanie nieuformowanego ogniotrwałego wyrobu ceramicznego
CN110642604A (zh) * 2019-11-07 2020-01-03 湖北安耐捷炉衬材料有限公司 铸造用钢包防渣涂抹料及其制备方法
CN111689779A (zh) * 2020-05-28 2020-09-22 江苏盈天化学有限公司 一种焚烧回转窑中多孔陶瓷体窑皮及其制备方法

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ES8406990A1 (es) * 1982-05-28 1984-08-16 Shinagawa Refractories Co "un procedimiento para preparar un material refractario de magnesia-carbono"
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ES8406990A1 (es) * 1982-05-28 1984-08-16 Shinagawa Refractories Co "un procedimiento para preparar un material refractario de magnesia-carbono"
WO1991014661A1 (en) * 1990-03-22 1991-10-03 Dresser Industries, Inc. Magnesite-carbon refractories
US5318933A (en) * 1993-03-24 1994-06-07 Indresco Inc. Carbon-containing carbon bonded refractories with improved physical properties

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DK1564195T3 (da) 2011-10-03
EP1564195A1 (en) 2005-08-17
ATE512943T1 (de) 2011-07-15
PT1564195E (pt) 2011-09-19
ES2374134T3 (es) 2012-02-14
AU2002340523A1 (en) 2004-04-23
CA2542275C (en) 2010-01-05
CY1111976T1 (el) 2015-11-04
CN1309679C (zh) 2007-04-11
CN1697788A (zh) 2005-11-16
CA2542275A1 (en) 2004-04-15
AU2010202278A1 (en) 2010-06-24
EP1564195B1 (en) 2011-06-15

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