DE2265009B2 - Mortar for joining bricks of refractory linings - Google Patents

Mortar for joining bricks of refractory linings

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Publication number
DE2265009B2
DE2265009B2 DE2265009A DE2265009A DE2265009B2 DE 2265009 B2 DE2265009 B2 DE 2265009B2 DE 2265009 A DE2265009 A DE 2265009A DE 2265009 A DE2265009 A DE 2265009A DE 2265009 B2 DE2265009 B2 DE 2265009B2
Authority
DE
Germany
Prior art keywords
colloidal silica
mortar
refractory
suspension
bricks
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
DE2265009A
Other languages
German (de)
Other versions
DE2265009A1 (en
Inventor
Peter Harry Havranek
Paul Lennart Ivarsson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoganas AB
Original Assignee
Hoganas AB
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 claimed from SE06342/71A external-priority patent/SE350475B/xx
Priority claimed from SE16684/71A external-priority patent/SE358627B/xx
Application filed by Hoganas AB filed Critical Hoganas AB
Publication of DE2265009A1 publication Critical patent/DE2265009A1/en
Publication of DE2265009B2 publication Critical patent/DE2265009B2/en
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
    • 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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium oxide
    • 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
    • C04B35/6303—Inorganic additives
    • C04B35/6316—Binders based on silicon compounds
    • 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
    • C04B41/45—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
    • C04B41/5025—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 ceramic materials
    • C04B41/5035—Silica
    • 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
    • C04B41/87—Ceramics
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
    • C04B2111/00672—Pointing or jointing 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
    • C04B2235/3217—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
    • C04B2235/3418—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
    • C04B2235/34—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
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • 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
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite

Description

2020th

Feuerfeste Auskleidungen auf der Basis von Siliciumdioxid, Aluminiumsilikat oder Aluminiumoxid allein oder in Kombination besitzen bekanntlich gute feuerfeste Eigenschaften, haben aber auch den Nachteil, daß sie von basischen Schlacken stark angegriffen 2s werden, was ihren Gebrauch beträchtlich einschränkt.Refractory linings based on silicon dioxide, aluminum silicate or aluminum oxide alone or in combination are known to have good refractory properties, but also have the disadvantage that they are strongly attacked by basic slag 2s, which considerably limits their use.

Die Erfindung hat sich die Aufgabe gestellt, diesen Mangel zu vermeiden, dar, wie festgestellt wurde, auf der Tatsache beruht, daß alkalische Substanzen aus basischer Schlacke mit den feuerfesten Materialien jo unter Bildung von Silikaten oder Aluminaten, insbesondere in Poren und Rissen, reagieren, wo der chemische Angriff sich mit einer Berstwirkung infolge der Quellung der Aluminate und Silikate überlagert.The invention has set itself the task of avoiding this deficiency, as has been found on based on the fact that alkaline substances from basic slag with the refractory materials jo with the formation of silicates or aluminates, especially in pores and cracks, react where the chemical Attack superimposed with a bursting effect as a result of the swelling of the aluminates and silicates.

Die Erfindung beruht auf dem Grundgedanken, « solche Poren und Risse in der Auskleidung, die mit der basischen Schlacke in Berührung kommen können, so weit wie möglich mit solchen Substanzen zu füllen, die bei Reaktion mit den basischen Bestandteilen der Schlacke nicht quellen. Es wurde gefunden, daß 4» Substanzen mit solchen Eigenschaften kolloidale Kieselsäuresole, inbesondere wäßrige kolloidale Kieselsäuredispersionen, von diskreten Teilchen oberflächlich hydroxylierter Kieselsäure einer Teilchengröße bis zu 30 μηι, vorzugsweise zwischen 5 und 30 μιτι sind. Vorzugsweise werden wäßrige Dispersionen kolloidaler Kieselsäure in Konzentrationen entsprechend etwa 40 Gewichts-% S1O2 verwendet.The invention is based on the basic idea, “those pores and cracks in the lining, which with the basic slag can come into contact, as far as possible to fill with such substances that do not swell when reacting with the basic constituents of the slag. It was found that 4 » Substances with such properties colloidal silica sols, in particular aqueous colloidal silica dispersions, of discrete particles of superficially hydroxylated silica of a particle size up to 30 μm, preferably between 5 and 30 μm. Aqueous dispersions of colloidal silica are preferably used in concentrations corresponding to approximately 40% by weight S1O2 used.

Die Erfindung beruht auf der Arbeitshypothese, daß die kolloidale Kieselsäure mit Alkali aus der Schlacke so und mit Aluminium aus Aluminium enthaltenden feuerfesten Stoffen unter Bildung nicht quellender Verbindungen vom Carnegittyp (Na2O · AI2O3 · 2SiC>2) reagiert, während in sauren feuerfesten Stoffen die Gegenwart kolloidaler Kieselsäure die Bildung von r>"> Tridymit und Cristobalit ansteigen läßt. Unabhängig davon, ob diese Hypothese zutrifft oder nicht, haben praktische Versuche gezeigt, daß die Behandlung der oben erwähnten feuerfesten Materialtypen mit kolloidaler Kieselsäure ihre Widerstandsfähigkeit gegen den wt Angriff basischer Schlacke beträchtlich verbessert.The invention is based on the working hypothesis that the colloidal silica reacts with alkali from the slag and with refractory materials containing aluminum from aluminum to form non-swelling compounds of the Carnegite type (Na2O · AI2O3 · 2SiC> 2), whereas the presence in acidic refractories colloidal silica causes the formation of r> "> tridymite and increase cristobalite. Regardless of whether this hypothesis is correct or not, practical tests have shown that the treatment of the above mentioned refractory material types considerably with colloidal silica their resistance to the wt attack basic slag improved.

Die Erfindung umfaßt daher feuerfeste Ausklcidungsmateriulien sowie fertige Futter, die gegen Angriffe basischer Schlacken widerstandsfähig sind und mindestens eines der feuerfesten Produkte Kieselsaure, ·>> Aliiiuuiiumsilikat und Aluminiumoxid zur Grundlage hüben, und die Erfindung ist im wesentlichen dadurch LTL'k'jnn/eichnet. daI^ niin<l<%«.ti"ns solche Oberflächen/onen dej Auskleidungsmaterials oder des fertigen Futters, die im Gebrauch Angriffen basischer Schlacken ausgesetzt sind, mit kolloidaler Kieselsäure einer Teilchengröße bis zu 30 μπι, vorzugsweise zwischen 5 und 30 μΐη getränkt werden. Mit anderen Worten, die Poren solcher Oberflächenzonen werden mehr oder weniger vollständig mit feinen trockenen Teilchen aus kolloidaler Kieselsäure gefülltThe invention therefore comprises refractory Ausklcidungsmateriulien as well as ready-made feed, which are resistant to attack by basic slag and at least one of the refractory products silica, · >> aluminum silicate and aluminum oxide as the basis, and the invention is essentially LTL'k'jnn / calibrated. Dai ^ niin <l <% «.ti" ns such surfaces / ones dej lining material or of the finished feed, are subjected to basic in use attacks slags, with colloidal silica having a particle size up to 30 μπι, preferably are impregnated 5-30 μΐη In other words, the pores of such surface zones are more or less completely filled with fine dry particles of colloidal silica

Die Auskleidungsmaterialien oder fertigen Futter können auf einem der üblichen Wege hergestellt werden, und mindestens solche Oberflächen, die im Gebrauch dem Angriff basischer Schlacken ausgesetzt sind, können anschließend mit einer wäßrigen Suspension von oberflächenhydroxylierten Kieselsäureteilchen einer Teilchengröße bis zu 30 μπι getränkt und schließlich getrocknet werden. Die Tränkung kann durch Aufsprühen, Streichen, Eintauchen, Vollsaugen usw. durchgeführt werden. In gewissen Fällen ist es jedoch möglich, die kolloidale Kieselsäuresuspension in die Massen, aus denen Ziegel und sonstige feuerfeste Gegenstände gefertigt werden, sowie in feuerfeste Mörtel und Ramm- oder Stampfmassen einzumischen, wie sie zum Auskleiden von öfen, Pfannen und dergleichen benutzt werden. Um sonstige Eigenschaften solcher Mörtel und Massen nicht zu verändern, wird ihnen vorzugsweise nicht mehr kolloidale Kieselsäuresuspension zugemischt, als etwa 2 Gewichts-% S1O2 in dem fertigen Mörtel oder der fertigen Masse entspricht. Selbst wenn man diese Art Mörtel oder Stampfmasse benutzt ist es ratsam, nach vollständiger Fertigung der Auskleidung eine Nachbehandlung mit der kolloidalen Kieselsäuresuspension durchzuführen, um noch verbliebene Oberflächenporen auszufüllen.The lining materials or finished linings can be made in any of the usual ways and at least those surfaces that are exposed to the attack of basic slag during use can then with an aqueous suspension of surface-hydroxylated silica particles a particle size up to 30 μm are soaked and finally dried. The impregnation can be carried out by spraying, brushing, dipping, soaking, etc. In certain cases it is however possible the colloidal silica suspension in the masses that make up bricks and other refractories Objects are manufactured and mixed with refractory mortar and ramming or ramming compounds, how they are used to line stoves, pans and the like. About other properties Not to change such mortars and masses, they are preferably no longer colloidal silica suspension mixed in, than about 2% by weight S1O2 in corresponds to the finished mortar or the finished mass. Even if you have that type of mortar or rammed earth it is advisable to undergo an after-treatment with the colloidal after the lining is completely finished Carry out silica suspension to fill any remaining surface pores.

Wenn gebrannte Ziegel oder fertige getrocknete Futter mit der kolloidalen Kieselsäuresuspension behandelt werden sollen, kann die Behandlung mehrmals unter Zwischenschaltung von Trocknung wiederholt werden, wobei das Porenvolumen der behandelten Oberflächenzone den maximalen Kieselsäureverbrauch bestimmt.When baked bricks or finished dried lining with the colloidal silica suspension are to be treated, the treatment can be repeated several times with the interposition of drying where the pore volume of the treated surface zone is the maximum silica consumption certainly.

Im folgenden wird die Erfindung an einigen Beispielen näher erläutert. Die Widerstandsfähigkeit gegen Schlackenangriff ist bei allen Produkten der Beispiele nach der genormten DIN-Prüfmethode untersucht worden.The invention is explained in more detail below using a few examples. The resilience against slag attack is for all products of the examples according to the standardized DIN test method been investigated.

Beispiel t
Herstellung von ZiegelnExample t
Manufacture of bricks

Ziegel auf der Grundlage von Siliciumdioxid, Aluminiumsilikat oder Aluminiumoxid werden in bisher bekannter Weise gefertigt und nach dem Brennen mit einer Suspension von kolloidaler Kieselsäure einer Teilchengröße vor ri bis 30 μηι imprägniert. Die Ziegel werden getrocknet und sind darauf gebrauchsfertig.Brick based on silica, aluminum silicate or alumina are manufactured in a previously unknown manner and impregnated μηι after firing with a suspension of colloidal silica of a particle size prior to r i 30th The bricks are dried and ready to use.

Beispiel 2
Herstellung von feuerfestem MaterialExample 2
Manufacture of refractory material

Eine Mörtelmasse, wie sie gewöhnlich für ungetriinktc Ziegel gemäß Beispiel 1 gebraucht wird, jedoch mit einem so niedrigen Alkaligehalt wie praktisch möglich, wird mit etwa r> Gewichts-% einer 40%igen Suspension von kolloidaler Kieselsäure vermischt. Eine in dieser Weise hergestellte Mörtelmasse ist besonders geeignet für die Ausfiilteninp von Ciiel.lpfanncnöfen zur Slahler-A mortar composition, as commonly used for ungetriinktc brick according to Example 1, but with such a low alkali content as practicable, is mixed with about r>% by weight of a 40% suspension of colloidal silica. A mortar mass produced in this way is particularly suitable for the filling-out of cil.

Beispiel 3
Herstellung von gemauerten AuskleidungenExample 3
Manufacture of masonry linings

Gemäß Beispiel 1 hergestellte und getränkte Ziegel werden mit einem Mörtel nach Beispiel 2 verbunden, und das Wasser wird durch Trocknung bei etwa 110° entfernt, worauf die Auskleidung gebrauchsfertig ist Die Verbindung kann weiter dadurch verbessert werden, daß man sie nach dem Trocknen mit einer Suspension aus kolloidaler Kieselsäure in solchen Fällen imprägniert, wo es aus technischen Gründen unzweckmäßig ist, ausreichende Mengen kolloidaler Kieselsäure dem Mörtel zuzusetzen.Bricks produced and impregnated according to Example 1 are bonded with a mortar according to Example 2, and the water is removed by drying at about 110 °, whereupon the liner is ready for use The connection can be further improved by having it dry with a Suspension of colloidal silica impregnated in those cases where it is unsuitable for technical reasons is to add sufficient amounts of colloidal silica to the mortar.

Im Rahmen der Erfindung ist es auch möglich, zunächst eine Auskleidung mit den be ti eff enden Materialien in bisher üblicher Weise, z. B. mittels Vermauern, Stampfen oder Gießen herzustellen und nach erfolgter Trocknung des Futters seine Oberflächenzone mit einer Suspension kolloidaler Kieselsäure zu tränken und schließlich die getränkte Oberfläche zu trocknen.In the context of the invention it is also possible to first end a lining with the be ti eff Materials in the usual manner, e.g. B. by means of bricking, ramming or casting and after the feed has been dried, its surface zone with a suspension of colloidal silica to soak and finally to dry the soaked surface.

Zusammenfassend ist festzustellen, daß die Erfindung im wesentlichen in der Benutzung kolloidaler Kieselsäure der angegebenen Art besteht, um einen ausgedehnten Gebrauch von feuerfesten Massen auf Grundlage von S1O2 und/oder AI2O3 auch bei Gießpfannen und Öfen zur Behandlung von Metallschmelzen mit basischen Schlakken möglich zu machen.In summary, it should be noted that the invention consists essentially in the use of colloidal silica of the type indicated in order to obtain an extended Use of refractory compounds based on S1O2 and / or AI2O3 also for ladles and furnaces To make treatment of molten metal with basic slag possible.

Claims (3)

1 Patentansprüche:1 claims: 1. Mörtel zur Verbindung von Ziegeln feuerfester Auskleidungen, auf der Grundlage mindestens eines der keramischen Produkte Kieselsäure, Aluminiumsilikat und Aluminiumoxid, dadurch gekennzeichnet, daß er zusätzlich kolloidale Kieselsäure enthält1. Mortar for joining bricks refractory linings, on the basis of at least one of the ceramic products silicic acid, aluminum silicate and aluminum oxide, characterized that it also contains colloidal silica 2. Mörtel nach Anspruch 1, dadurch gekennzeichnet, daß er die kolloidale Kieselsäure in einer Menge bis zu etwa 2 Gewichts-%, vorzugsweise in einer Menge von etwa 2 Gewichts-%, enthält2. Mortar according to claim 1, characterized in that it contains the colloidal silica in an amount up to about 2% by weight, preferably in an amount of about 2% by weight 3. Mörtel nach Anspruch 1 und 2, dadurch gekennzeichnet daß er die kolloidale Kieselsäure in Form einer Suspension mit einer Konzentration entsprechend etwa 40 Gewichts-% S1O2 enthält3. Mortar according to claim 1 and 2, characterized in that it contains the colloidal silica in Contains the form of a suspension with a concentration corresponding to approximately 40% by weight of S1O2
DE2265009A 1971-05-14 1972-05-12 Mortar for joining bricks of refractory linings Ceased DE2265009B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE06342/71A SE350475B (en) 1971-05-14 1971-05-14
SE16684/71A SE358627B (en) 1971-12-27 1971-12-27

Publications (2)

Publication Number Publication Date
DE2265009A1 DE2265009A1 (en) 1975-10-16
DE2265009B2 true DE2265009B2 (en) 1980-07-24

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
DE2223142A Withdrawn DE2223142B2 (en) 1971-05-14 1972-05-12 Use of colloidal silica for refractory lining materials or linings
DE2265009A Ceased DE2265009B2 (en) 1971-05-14 1972-05-12 Mortar for joining bricks of refractory linings

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE2223142A Withdrawn DE2223142B2 (en) 1971-05-14 1972-05-12 Use of colloidal silica for refractory lining materials or linings

Country Status (5)

Country Link
BE (1) BE783444A (en)
DE (2) DE2223142B2 (en)
FR (2) FR2137863B1 (en)
GB (2) GB1398572A (en)
NO (1) NO128708B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3043856A1 (en) * 1980-11-21 1982-06-03 Zschimmer & Schwarz Gmbh & Co Chemische Fabriken, 5420 Lahnstein Cold setting alkali silicate binder for refractory mouldings - contains mixt. of alkali silicate(s), phosphate(s), boron cpds., silica and zeolite

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345408A1 (en) * 1976-03-26 1977-10-21 Centre Rech Metallurgique Protection of basic refractory linings by coating with zirconia - which is more readily attached by slag than the lining itself
DE3705002A1 (en) * 1987-02-17 1988-08-25 Otto Feuerfest Gmbh SILICONE AND METHOD FOR THE PRODUCTION THEREOF
EP0736505A1 (en) * 1995-04-07 1996-10-09 HYLSA, S.A. de C.V. Refractory bricks for iron ore reduction reactors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3043856A1 (en) * 1980-11-21 1982-06-03 Zschimmer & Schwarz Gmbh & Co Chemische Fabriken, 5420 Lahnstein Cold setting alkali silicate binder for refractory mouldings - contains mixt. of alkali silicate(s), phosphate(s), boron cpds., silica and zeolite

Also Published As

Publication number Publication date
FR2320921B1 (en) 1980-07-04
DE2223142A1 (en) 1972-11-30
FR2137863B1 (en) 1980-04-18
FR2320921A1 (en) 1977-03-11
FR2137863A1 (en) 1972-12-29
GB1398572A (en) 1975-06-25
DE2265009A1 (en) 1975-10-16
DE2223142B2 (en) 1979-06-21
NO128708B (en) 1974-01-02
BE783444A (en) 1972-09-01
GB1398573A (en) 1975-06-25

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