BE686196A - - Google Patents
Info
- Publication number
- BE686196A BE686196A BE686196DA BE686196A BE 686196 A BE686196 A BE 686196A BE 686196D A BE686196D A BE 686196DA BE 686196 A BE686196 A BE 686196A
- Authority
- BE
- Belgium
- Prior art keywords
- refractory
- fire
- coating
- weight
- process according
- Prior art date
Links
- 238000000576 coating method Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 11
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 230000009970 fire resistant effect Effects 0.000 claims description 6
- 229920001353 Dextrin Polymers 0.000 claims description 3
- 239000004375 Dextrin Substances 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 235000019425 dextrin Nutrition 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011505 plaster Substances 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 239000011819 refractory material Substances 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims 1
- 239000000243 solution Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 2
- 239000010431 corundum Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 208000030507 AIDS Diseases 0.000 description 1
- 241000699666 Mus <mouse, genus> Species 0.000 description 1
- 241000088844 Nothocestrum Species 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 101100056203 Streptomyces clavuligerus argJ2 gene Proteins 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- PSGAAPLEWMOORI-PEINSRQWSA-N medroxyprogesterone acetate Chemical compound C([C@@]12C)CC(=O)C=C1[C@@H](C)C[C@@H]1[C@@H]2CC[C@]2(C)[C@@](OC(C)=O)(C(C)=O)CC[C@H]21 PSGAAPLEWMOORI-PEINSRQWSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 210000002220 organoid Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- C04B35/626—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
- C04B35/636—Polysaccharides or derivatives 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
-
- 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
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5092—Phosphate cements
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
-
- 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
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- 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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, 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
- C04B2235/34—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
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- 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
-
- 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
- F27D2001/1605—Repairing linings
- F27D2001/161—Hot repair
-
- 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
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Products (AREA)
Description
<Desc/Clms Page number 1>
EMI1.1
Procéda pour la rem1se en état do rev8+amen+s réfraetairee au feu.
L'invention concerne un procédé pour la vêtait* en
EMI1.2
état de revêtements r6fractaires au fol, Mettant un oeuvre. à froid, des muses r6fractaires au t'eu à base d'aluminl et/ou de eilioet de silicate de liroonium ou oat1 de silicium même non purifiée, en combinaison avec une couche d'enduit à appliquer sur les surfaces à remettre en état.
On a essaye de nombreuses applications de massée céraminues sur des revêtements réfractaires au fou à remettn en état, par pulvérisation, masticage, battage etc. La con- dition préalable à une recharge parfaite de ces revêtements est la bonne liaison de ces masses réfractaires avec la @
<Desc/Clms Page number 2>
maçonnerie à remettre en état.
On peut par aillera ané- liorer la qualité de cette liaison en augmentant la pouvoir adhésif ou encore, de manière plus compliquée en travaillant d'abord au ciseau les surfaces de la maçonnerie à remettre en état, afin de les rendre plus rugueuses et plus absor- bantes de la.couche d'enduit préalable.
Il est encore connu d'augmenter ce pouvoir adhésif en augmentant la teneur en eau des masses destinées aux réparations. Cette pratique comporte toutefois le danger accru de formation de fissures, toujours indésirables.
Il est également connu d'enduire de verre soluble ou d'une masse empâtée au verre soluble les surfaces de maçonnerie d'argiles réfractaire* à remettre en état. L'excellence de la liaison est due ici au fait que le verre soluble agit comme fondant. Cependant, aux températures élevées se produisent des frittages indésirables, car il peut en résulter de forts retraits localisés et même des éclate- ments de la masse fraîchement appliquée. L'invention pro- @ pose de résoudre le problème de ces fâcheux phénomènes secondaires.
Il est done proposé, conformément à l'invention, d'appliquer aux endroits à remettre en 'tilt, avant appli- cation des masses réfractaires, un léger enduit de solution aqueuse acide de phosphate d'aluminium, contenant de 10% à 60% en poids de matière sèche, On employer* de préférence le phosphate monoaluminique Al(H2P04)3.
Une autre caractéristique de l'invention permet aussi d'ajouter à cette solution de faibles quantités de liants organidues, tels par exemple la dextrine ou des lessives sulfitiques, à concurrence de 0,5 à 2,0 % en poids.
Ces solutions aqueuses acides de phosphate d'àlumi- nium - et de préférence de phosphate monoaluminique doué d'un grand pouvoir adhésif aux températures ambiantes -
<Desc/Clms Page number 3>
donnent lieu, aux températures élevées après évaporation
EMI3.1
de l'eau, . des réactions avec le revêtement bétra4%ktko on réfection, pour former des substances tétracta1r.. à pointe de fusion très élevés. De ce fait, le phosphate d'aluminium assure une liaison réfractaire parfaite *titre l'ancien et le nouveau revêtement, sans compromettre en rien leur résistance au tout et évite de la sorte les in-
EMI3.2
conv6niente des procédés connus à ce jour.
Il faut encore signaler que, dans l'état actuel de la technique, il est connu d'utiliser des solutions de phosphate d'aluminium avec une charge inerte de corindon pour fixer des pièces métalliques à des constructions en
EMI3.3
céramiques, par exemple dans le montage de bheraoooublao.
Ion mastics examinés contenaient de 16,8 à 33t8 % en sida d'eau et, rapportés aux poids de matières sèches, de 10 à 50 de AlP04 avec 90 à 50 % d'A1203 sous forme d'éleo- trooorindon fondu ! il s'est avéré que les mastics avec mu d'AIM4k ont montré les plus fortes résistances, indépendaja- ment des températures de cuisson.
Cette manière d'obérer mettait à profit le grand pouvoir adhésif pour les métaux des masses réfractaires contenant du phosphate d'aluminium*
EMI3.4
Il s'est avéré que pour relier de la "90nn.i.
réfractaire au fou endommagée aux masses rétraotairaa uti- 'Usées pour la remise en état, il est le plus avantageux de mettre en oeuvre des enduits de solutions de phosphate d'aluminium contenant de 10 à 60 % en poids de Matière
EMI3.5
o6cho9 sans additions de corindon ou autres matières t6trao taire. au tout La haute teneur on eau de ce$ solutions fa-
EMI3.6
vorine leur pénétration dans les pores du revêtement s6'rat taire au feu à remettre en état.
et réalise parfaitM$nt la liaison intime du revêtement endommagé avec les Mss réfraotaires utilisées pour sa remise en était Leur oos"' tact doit tire aussi partait que possible pour assurer une
<Desc/Clms Page number 4>
structure homogène aux endroits du revêtement réf@@astaire
EMI4.1
au feu. remis en état. Il y a lieu de faire .t1iU4t1.. 18i que les n'agréa qui doivent réagir .ntl"e116. , ces ÂAI aux températures élevées, et trouvent en quâûtlt6o odfi- santés tant dans l'ancien revêtement 'étX'acta1fe que dâüo les masses réfraotaires y apniiquéés, pour en aaSurer la liaison intime.
Cette remarque est particulièrement valable
EMI4.2
quand l'ancien et le nouveau revêtement réfraûtaire au feu sont faite de la même matière et revêt une importance toute particulière quand le revêtement réfractaire au feu
EMI4.3
doit répondre en service à certaines sujétionej telles par exemple une haute conductibilité calorifique.
Le procédé conforme à l'invention s'est révélé par- ticulièrement favorable dans les réparations des revêtements réfractaires au feu des chambres de fusion constitués de carbure de silicium avec liants argileux. En son temps, il était indispensable dans la réfection de semblables revête- ments, d'éliminer complètement les derniers restes do réfrao taire adhérents aux tubes à eau encastrés avant de les enro- ber dans un revêtement entièrement renouvelé. Avec le procé- dé conforme à l'invention, on peut sans inconvénients lais-
EMI4.4
$or fies restes de réfractaire en place et y appliquée suc- cesoivement une mince couche de solution de phosphate sono- alumine que et ensuite les magot* 'taota1.' pour les r8.
Il) parafions, appliquées au pistolet, par 11&11::1.01.1' OV 4Ua...
Dans ce cas, on ajoutera opportun6mont à la solution de l'ordre de 0,9 A 210 je de dextrine. Ce procédé conto.... @ l'invention offre le grand avantage de permettre des écone-
EMI4.5
aiea, tant sur la masse r6fractaire à appliquer que 8w le temps nécessaire pour effectuer ces réparations PU 0à1- leurs, ce procédé qui assure cette économie do natib t6- :zaotaira et du tempo nécessaire pour effectuée Ibo *6puam tionn est applicable de la sort. , la remise en état de
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toutes maçonneries en matériaux réfractaires au feu.
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EMI1.1
Proceeded for the restoration in a state of rev8 + amen + s refraetairee to the fire.
The invention relates to a method for clothing * in
EMI1.2
state of refractory coatings to fol, Putting a work. cold, refractory muses based on aluminl and / or liroonium silicate or silicon oat1 even unpurified, in combination with a coating layer to be applied to the surfaces to be restored.
Numerous applications of massée ceraminues have been tried on coatings refractory to the rehabilitated wheel, by spraying, puttying, beating etc. The prerequisite for a perfect recharge of these coatings is the good bond of these refractory masses with the @
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masonry to be restored.
It is also possible to improve the quality of this bond by increasing the adhesive power or, in a more complicated manner, by first working with a chisel the surfaces of the masonry to be repaired, in order to make them rougher and more absorbent. - bantes of the pre-plaster layer.
It is also known to increase this adhesive power by increasing the water content of the masses intended for repairs. However, this practice involves the increased danger of the formation of cracks, which are always undesirable.
It is also known practice to coat the surfaces of masonry with refractory clays * to be repaired with soluble glass or with a mass impasted with soluble glass. The excellence of the bond is due here to the fact that the water glass acts as a flux. However, at high temperatures undesirable sintering occurs, as this can result in strong localized shrinkage and even bursting of the freshly applied mass. The invention proposes to solve the problem of these annoying secondary phenomena.
It is therefore proposed, in accordance with the invention, to apply to the places to be returned to tilt, before application of the refractory masses, a light coating of an acidic aqueous solution of aluminum phosphate, containing from 10% to 60%. by weight of dry matter, use * preferably monoaluminum phosphate Al (H2PO4) 3.
Another characteristic of the invention also makes it possible to add to this solution small amounts of organoid binders, such for example dextrin or sulphite lyes, up to 0.5 to 2.0% by weight.
These acidic aqueous solutions of aluminum phosphate - and preferably monoaluminum phosphate endowed with great adhesive power at ambient temperatures -
<Desc / Clms Page number 3>
give rise, at high temperatures after evaporation
EMI3.1
some water, . reactions with the betra4% ktko coating are repaired, to form tetracta1r substances with very high melting points. As a result, the aluminum phosphate ensures a perfect refractory bond * between the old and the new coating, without compromising in any way their resistance to the whole and in this way avoids intrusion.
EMI3.2
conv6niente of the methods known to date.
It should also be pointed out that, in the current state of the art, it is known to use solutions of aluminum phosphate with an inert filler of corundum for fixing metal parts to constructions made of steel.
EMI3.3
ceramics, for example in the assembly of bheraoooublao.
The sealants examined contained 16.8-33t8% water AIDS and, based on the weight of dry matter, 10-50 AlPO4 with 90-50% A1203 as molten eletrooorindon! it turned out that the sealants with mu of AIM4k showed the highest resistance, independent of the firing temperatures.
This way of obstructing took advantage of the great adhesive power for metals of the refractory masses containing aluminum phosphate *
EMI3.4
It turned out that to link from the "90nn.i.
refractory to the crazy damaged to the retrootairaa masses used for the reclamation, it is most advantageous to use coatings of aluminum phosphate solutions containing from 10 to 60% by weight of material
EMI3.5
o6cho9 without additions of corundum or other tetra tary material. at all The high water content of this $ solutions fa-
EMI3.6
vorinates their penetration into the pores of the fire-resistant coating to be repaired.
and achieves perfectM $ nt the intimate bond of the damaged coating with the refraotaires Mss used for its restoration was Their oos "'tact must pull as far as possible to ensure a
<Desc / Clms Page number 4>
homogeneous structure at the locations of the coating ref @@ astaire
EMI4.1
fire. reconditioned. It is necessary to do .t1iU4t1 .. 18i that the n'agréa which must react .ntl "e116., These IAI at high temperatures, and find in quâûtlt6o odfi- sos both in the old coating 'etX'acta1fe that in dâüo the refraotary masses apniiqueés there, to ensure the intimate connection.
This remark is particularly valid
EMI4.2
when the old and the new fire resistant lining are made of the same material and is of particular importance when the fire resistant lining
EMI4.3
must respond in service to certain subjétionej such for example a high heat conductivity.
The process according to the invention has been found to be particularly favorable in the repair of fire-resistant linings of melting chambers made of silicon carbide with clay binders. In its day, it was essential in the repair of such coatings to completely remove the last remnants of refrigeration adhering to the recessed water tubes before coating them in a completely renewed coating. With the process according to the invention, it is possible without drawbacks to
EMI4.4
$ gold with the remains of refractory in place and successively applied a thin layer of sono-alumina phosphate solution that and then the magot * 'taota1.' for the r8.
It) parafions, applied with a pistol, by 11 & 11 :: 1.01.1 'OV 4Ua ...
In this case, we will add opportun6mont to the solution of the order of 0.9 to 210 l of dextrin. This method conto .... @ the invention offers the great advantage of allowing savings
EMI4.5
aiea, both on the refractory mass to be applied and 8w the time necessary to carry out these repairs PU 0 to 1, this process which ensures this saving of natib t6-: zaotaira and of the time required to carry out Ibo * 6puam tionn is applicable of the sort . , the rehabilitation of
<Desc / Clms Page number 5>
all masonry in fire-resistant materials.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC0036764 | 1965-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE686196A true BE686196A (en) | 1967-02-01 |
Family
ID=7022443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE686196D BE686196A (en) | 1965-08-30 | 1966-08-30 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE686196A (en) |
| FR (1) | FR1491670A (en) |
| LU (1) | LU51825A1 (en) |
| NL (1) | NL6611528A (en) |
| SE (1) | SE318513B (en) |
-
1966
- 1966-08-16 NL NL6611528A patent/NL6611528A/xx unknown
- 1966-08-26 LU LU51825D patent/LU51825A1/xx unknown
- 1966-08-30 BE BE686196D patent/BE686196A/fr unknown
- 1966-08-30 SE SE11640/66A patent/SE318513B/xx unknown
- 1966-08-30 FR FR74685A patent/FR1491670A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1491670A (en) | 1967-08-11 |
| NL6611528A (en) | 1967-03-01 |
| LU51825A1 (en) | 1968-03-25 |
| SE318513B (en) | 1969-12-08 |
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