DE1256139B - Material for repairing components made of refractory material - Google Patents

Material for repairing components made of refractory material

Info

Publication number
DE1256139B
DE1256139B DES84402A DES0084402A DE1256139B DE 1256139 B DE1256139 B DE 1256139B DE S84402 A DES84402 A DE S84402A DE S0084402 A DES0084402 A DE S0084402A DE 1256139 B DE1256139 B DE 1256139B
Authority
DE
Germany
Prior art keywords
refractory material
refractory
components made
pitch
mixture
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.)
Pending
Application number
DES84402A
Other languages
German (de)
Inventor
Dr-Ing Emilio Tassara
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.)
Filippo & Carlo Tassara SpA In
S DOLOMITE FRANCHI SA
Original Assignee
Filippo & Carlo Tassara SpA In
S DOLOMITE FRANCHI SA
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 Filippo & Carlo Tassara SpA In, S DOLOMITE FRANCHI SA filed Critical Filippo & Carlo Tassara SpA In
Publication of DE1256139B publication Critical patent/DE1256139B/en
Pending legal-status Critical Current

Links

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
    • C04B35/66—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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/44—Refractory linings
    • 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
    • F27D1/0003—Linings or walls
    • F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics

Description

Material zur Reparatur von Bauteilen aus feuerfestem Material Die Erfindung betrifft ein Material zur Reparatur von Bauteilen aus feuerfestem Material, insbesondere zur Reparatur industrieller Öfen, wobei das Material an die korrodierten und zu reparierenden Teile herangeführt wird und wobei das Material aus einer Mischung aus feuerfestem Material und bindenden Zusätzen besteht.Material for repairing components made of refractory material Die The invention relates to a material for repairing components made of refractory material, especially for the repair of industrial ovens, whereby the material to the corroded and parts to be repaired are brought in and the material is made from a mixture consists of refractory material and binding additives.

Aus der österreichischen Patentschrift 209 791 ist es bereits bekannt, solche industriellen Öfen mittels einer Mischung eines körnigen, feuerfesten Stoffes mit einem organischen Bindemittel und Wasser auszubessern. Damit wird also aus diesen Stoffen ein Mörtel gebildet. Dieses bekannte Verfahren hat jedoch den Nachteil, daß es nicht mit einem hydratierbaren Stoff wie gesintertem Dolomit eingesetzt werden kann. In diesem Falle kann selbst beim Einbringen des Mörtels kein Wasser zugesetzt werden, denn der hydratierbare Stoff würde augenblicklich hydratieren und seine Feuerfestigkeitseigenschaft dadurch verlieren.From the Austrian patent specification 209 791 it is already known such industrial furnaces by means of a mixture of a granular refractory material Touch up with an organic binder and water. So this becomes from these Fabrics formed a mortar. However, this known method has the disadvantage that it cannot be used with a hydratable material such as sintered dolomite can. In this case, no water can be added even when the mortar is being applied because the hydratable substance would instantly hydrate and its As a result, lose fire resistance properties.

Ferner ist die Warmausbesserung von Ofenwänden und -sohlen mittels einer Mischung von körnigem, teerigem, feuerfestem Stoff bekannt. Dieses Reparaturmittel ist jedoch relativ sehr teuer und schwierig zu handhaben. Das teerhaltige Material kann nämlich nur in erhitztem Zustand gehandhabt werden, denn in kaltem Zustand bildet es eine unbrauchbare feste Masse.Furthermore, the hot repair of furnace walls and floors is possible by means of a mixture of granular, tarry, refractory material known. This repair agent however, it is relatively very expensive and difficult to handle. The tarry material can only be handled in a heated state, because in a cold state it forms an unusable solid mass.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, ein Reparaturmaterial der genannten Art zu schaffen, welches ohne Wasserzusatz verarbeitbar ist und damit den Einsatz hydratierbarer feuerfester Stoffe, wie insbesondere-Sinterdolomit gestattet und welches in kaltem Zustand fließfähig ist.In contrast, the invention is based on the object of a repair material of the type mentioned, which can be processed without the addition of water and thus the use of hydratable refractory materials, such as in particular sintered dolomite, is permitted and which is flowable when cold.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß das feuerfeste Material aus einer Mischung aus feuerfestem Stoff, wie Dolomit, Magnesit, besteht, dem im kalten und trockenen Zustand pulverförmiges Pech beigemengt ist. Vorteilhaft beträgt der Pechanteil dabei etwa 10 %.This object is achieved according to the invention in that the refractory Material consists of a mixture of refractory material such as dolomite, magnesite, In the cold and dry state, powdered pitch is added to it. Advantageous the pitch is about 10%.

Die Anwendung des erfindungsgemäßen Reparaturmaterials erfolgt wie folgt: Wenn z. B. kleine Anfressungen an den Wänden oder dem Bett eines Ofens aus Dolomit ausgebessert werden sollen, so wird reiner Dolomit mit gepulvertem Pech in einem Prozentsatz von etwa 10% gemischt und diese Mischung an beide Wände und das Bett mittels einer Schaufel oder einer Sprühvorrichtung geworfen. Sobald das Material mit der heißen, zu reparierenden Fläche in Berührung kommt, tritt eine rasche Entgasung des Peches auf. Der kohlenstoffhaltige Rückstand des Peches hält die Dolomitkörner so lange, bis sie vollständig mit der vorhandenen Auskleidung abgebunden haben.The repair material according to the invention is used as follows: If z. B. small pitting on the walls or the bed of a stove If dolomite is to be repaired, it becomes pure dolomite with powdered pitch mixed in a percentage of about 10% and apply this mixture to both walls and thrown the bed using a shovel or spray device. As soon as that Material comes into contact with the hot surface to be repaired rapid degassing of the pitch. The carbonaceous residue of the pitch holds the dolomite grains until they are completely with the existing lining have tied.

Bei größeren Anfressungen ist es notwendig, den Betrieb des Ofens zu stoppen. In diesem Falle müssen Verschalungen an den zu reparierenden Wandteilen angebracht werden, z. B. Metallbleche.In the case of larger pitting, it is necessary to shut down the furnace to stop. In this case, cladding must be attached to the wall parts to be repaired be attached, e.g. B. metal sheets.

Zwischen dieser Verschalung und der Wand wird die Mischung eingebracht und durch übliche Vorrichtungen in geeigneter Weise zusammengepreßt.The mixture is introduced between this formwork and the wall and suitably pressed together by conventional devices.

Sobald während der Beheizung des Ofens eine Temperatur von 400 bis 500°C erreicht ist, entgast das Pech, dessen kohlehaltiger Rückstand die Körner des Dolomits an der Wand haftend zusammenhält. Diese Bindung besitzt einen ausreichenden Widerstand bei niedrigen Temperaturen und wird während des ersten Arbeitsganges des Ofens endgültig. Infolge der hohen Temperaturen erfolgt eine direkte Verschweißung der Dolomitkörner.As soon as a temperature of 400 to 500 ° C is reached, the pitch degassed, the carbonaceous residue of which the grains of the dolomite clinging to the wall. This bond has a sufficient Resistance at low temperatures and will be used during the first cycle of the furnace finally. The high temperatures result in direct welding of the dolomite grains.

Ein weiterer Vorteil der Erfindung besteht darin, daß die Lebensdauer der reparierten feuerfesten Auskleidung verlängert wird. Dies ist möglich, da die kohlenhaltigen Rückstände des Peches oder eines ähnlichen Materials in bekannter Weise die Wirkung des chemischen Angriffes der Schlacken und Metalldämpfe reduzieren.Another advantage of the invention is that the service life the repaired refractory lining is extended. This is possible because the carbonaceous residues of pitch or similar material in known Way to reduce the effect of the chemical attack of the slag and metal vapors.

Gegenüber den obigen Erläuterungen sind viele Abänderungen möglich, ohne aus dem Rahmen des Erfindungsgedankens herauszutreten.Many changes are possible compared to the above explanations, without stepping out of the scope of the inventive concept.

Claims (2)

Patentansprüche: 1. Material zur Reparatur von Bauteilen aus feuerfestem Material, insbesondere zur Reparatur industrieller Öfen, wobei das Material an die korrodierten und zu reparierenden Teile herangeführt wird und wobei das Material aus einer Mischung aus feuerfestem Material und bindenden Zusätzen besteht, dadurch gekennzeichnet, daß das feuerfeste Material aus einer Mischung aus feuerfestem Stoff, wie Dolomit, Magnesit, besteht, dem im kälten und trockenen Zustand pulverförmiges Pech beigemengt wird. Claims: 1. Material for repairing components made of refractory Material, in particular for repairing industrial ovens, the material being attached to the Corroded parts to be repaired are brought in and the material consists of a mixture of refractory material and binding additives, thereby characterized in that the refractory material consists of a mixture of refractory material, such as dolomite, magnesite, which is powdery in the cold and dry state Pitch is added. 2. Matehnl -nach Anspruch 1, dadurch gekennzeichnet, daß der Prozentanteil des Peches etwa 1011/o beträgt. In Betracht gezogene Druckschriften: Deutsche Auslegeschrift Nr.1119 748; österreichische Patentschrift Nr. 209 791.2. Matehnl -according to claim 1, characterized in that the Percentage of the pitch is about 1011 / o. Considered publications: German Auslegeschrift No. 1119 748; Austrian patent specification No. 209 791.
DES84402A 1962-04-02 1963-03-27 Material for repairing components made of refractory material Pending DE1256139B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1256139X 1962-04-02

Publications (1)

Publication Number Publication Date
DE1256139B true DE1256139B (en) 1967-12-07

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DE (1) DE1256139B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1796037B1 (en) * 1968-08-21 1970-09-03 Rhebinol Gmbh Fabrik Hochfeuer Spraying agents and methods for dry spraying furnace linings

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT209791B (en) * 1958-12-24 1960-06-25 Veitscher Magnesitwerke Ag Method of performing local repairs on the hot refractory masonry of industrial furnaces
DE1119748B (en) * 1959-12-21 1961-12-14 Huettenwerk Oberhausen Ag Basic patching compound for rotary drum ovens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT209791B (en) * 1958-12-24 1960-06-25 Veitscher Magnesitwerke Ag Method of performing local repairs on the hot refractory masonry of industrial furnaces
DE1119748B (en) * 1959-12-21 1961-12-14 Huettenwerk Oberhausen Ag Basic patching compound for rotary drum ovens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1796037B1 (en) * 1968-08-21 1970-09-03 Rhebinol Gmbh Fabrik Hochfeuer Spraying agents and methods for dry spraying furnace linings

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