DE752150C - Process for the manufacture of silica stones - Google Patents

Process for the manufacture of silica stones

Info

Publication number
DE752150C
DE752150C DEK165738D DEK0165738D DE752150C DE 752150 C DE752150 C DE 752150C DE K165738 D DEK165738 D DE K165738D DE K0165738 D DEK0165738 D DE K0165738D DE 752150 C DE752150 C DE 752150C
Authority
DE
Germany
Prior art keywords
silica
ferrosilicon
stones
manufacture
mass
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.)
Expired
Application number
DEK165738D
Other languages
German (de)
Inventor
Dr-Ing Friedr Badenheuer
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.)
Krupp Stahl AG
Fried Krupp AG
Original Assignee
Krupp Stahl AG
Fried Krupp AG
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 Krupp Stahl AG, Fried Krupp AG filed Critical Krupp Stahl AG
Priority to DEK165738D priority Critical patent/DE752150C/en
Application granted granted Critical
Publication of DE752150C publication Critical patent/DE752150C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/14Shaped 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 silica

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Silicon Compounds (AREA)

Description

Verfahren zur Herstellung von Silicasteinen Es ist bekannt, Öfen und Fegerungen dadurch auszubessern, daB Massen angewendet werden, die entweder ausschließlich odi6r zum Teil aus brennbaren Stoffen (z. B. A1, Si., Mg) bestehen, die nach ihrer Oxydation entweder allein oder gemeinschaftlich mit anderen Oxydfen als feuerfeste Baustoffedienen können. Dieses Verfahren erleichtert die Reparatur von industriellen Öfen dadurch, daB bei Verwendung derartiger Massen die Metalle unter Wärmeentwiek lung oxydiert werden, wodurch .ein einwandfreies Festhalben der Masse an den zu reparierenden Stellen erzielt wird. Ferner ist es bekannt, Quarzsand; unter Zusatz von Ferrosilicium, das als Mineralisatordient, zu glühen. und den so vorgebrannten Sand der zur Herstellung von Silicasteinen verwendeten Masse zuzusetzen. Das dem Quarzsand zugesetzte Ferrosiliciurn wird beim Vorbrennen oxydiert und gelangt daher nur in oxydierter Form in die unter Verwendung des vorgebrannten Sandes hergestellte Silicamasse.Process for the production of silica stones It is known, ovens and To mend sweeps by using masses that are either exclusively or partly consist of flammable substances (e.g. A1, Si., Mg) which, according to their Oxidation either alone or in conjunction with oxides other than refractory Can serve building materials. This procedure facilitates the repair of industrial Furnaces in that, when using such masses, the metals develop under heat treatment are oxidized, whereby a perfect adherence of the mass to the to repairing points is achieved. It is also known to use quartz sand; with addition of ferrosilicon, which serves as a mineralizer, to glow. and the pre-burned ones Add sand to the mass used to make silica stones. That the Ferrosilicon added to quartz sand is oxidized during pre-firing and therefore gets there only in oxidized form in the one produced using the pre-burnt sand Silica mass.

Nach der Erfindung wimd der Masse, aus der die Silicasteine geformt und anschließend gebrannt werden, Ferrosilicium, und zwar irr. feingemahlenem Zustand, zugesetzt. Das zugesetzte Ferrosilicium oxydiert während des anschließenden Brennens der Steine, also bevor die S:ilicasteine zur Verwendung kommen. Als zweckmäßig hat sich ein Zusatz von Ferrosilicium in der Größenordnung von etwa i bis io %, z. B. etwa 5 %, erwiesen bei einem Gehalt ,des Ferrosiliciums an SUicium von über 9o 0/0.According to the invention, the mass from which the silica bricks are formed and then fired, ferrosilicon, namely irr. finely ground Condition, added. The added ferrosilicon oxidizes during the subsequent Burning of the stones, i.e. before the S: ilica stones are used. As functional has an addition of ferrosilicon in the order of magnitude of about i to io%, z. B. about 5%, proven at a content of ferrosilicon in Si of more than 9o 0/0.

Die so 'hergestellten Steine haben überraschend ierweise eine wesentlich, höhere Haltbarkeit in metallurgischen Ofen gezeigt, als -üblicherweise mit Silicasteinen erzielt wird. Beispielsweise haben die erfindungsgemäß hergestellten Silicasteine bei ihrer Verwendung für das Gewölbe eines Siemens-Martin-Ofens eine wesentlich größere Haltbarkeit gezeigt als andere Silicasteine, die aus der gleichen Grundmasse, aber ohne Zusatz von Ferrosilicium hergestellt worden waren. Die besonders günstige Haltbarkeit der erfindungsgemäß hergestellten Steine ist wa'hrsc'heinlich nicht nur darauf zurückzuführen, daß sowohl das Silicium wie. das Eisen infolge katalytischer Wirkung die Tri,dymitumwandlung begünstigen, sondern wahrscheinlich auch darauf, daß die währenddes Brennens der Steine stattfindende Oxydation des Siliciums bzw. die damit verbundene Volumenvergrößerung die Entstehung eines Silicasteins größerer Dichte als bei Fehlen des FeSi-Zusatzes bewirkt.The stones produced in this way surprisingly have an essentially shown higher durability in metallurgical furnace than -usually with silica stones is achieved. For example, the silica bricks made in accordance with the present invention have when used for the vault of a Siemens-Martin furnace, it is essential shown greater durability than other silica bricks made from the same matrix, but without the addition of ferro-silicon. The particularly cheap The durability of the stones produced according to the invention is not really true only due to the fact that both the silicon as. the iron as a result of catalytic Favor the tri-dymite conversion, but probably also on that the oxidation of the silicon resp. the associated increase in volume the formation of a silica stone larger Density than caused by the absence of the FeSi addition.

Zur Ersparnis an Ferroisil-icium ist es empfehlenswert, nur -den während des Gebräuchsdem Feuer zuggekehrten Teil des Steins aus der gekennzeichneten Masse herzustellen. Der dem Feuer nicht zugekehrte, also weniger heanspruchte Teil des Silicastei.ns kann ans einer üblichen oder minderwertigeren Silicamasse'hergestellt werden. An Stelle des Ferrosiliciums können auch andere Metalle bzw. Metallegierungen, wie z. B. Calciumsilicium, mit Erfolg verwendet werden.To save on Ferroisil-icium, it is advisable to only use the during the part of the stone from the marked mass that is exposed to the fire to manufacture. The part of the fire that is not facing the fire, i.e. that is less stressed Silica stone can be produced from a common or inferior silica mass will. Instead of ferrosilicon, other metals or metal alloys, such as B. calcium silicon, can be used with success.

Claims (3)

PATENTANSPRÜCHE: i. Verfahren zur Herstellung von Silicasteinen, dadurch gekennzeichnet, daß der zur Herstellung der Silicasteine dienenden Masse gemahlenes Ferrosilicium zugesetzt wird. PATENT CLAIMS: i. Process for the manufacture of silica stones, thereby characterized in that the mass used to produce the silica stones is ground Ferrosilicon is added. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß Ferrosilicium mit einem Siliciumge'halt von über 9o % in einer Menge von etwa bis zu io% zugesetzt wird. 2. The method according to claim i, characterized in that that ferrosilicon with a silicon content of over 9o% in an amount of about up to io% is added. 3. Verfahren nach Anspruch i oder 2, dadurch gekennzeichnet, da:ß nur ein Teil des Silicasteins aus der ge'kennzeic'hneten Masse besteht, der während des Betriebes dem Ofenraum zugekehrt ist. d.. Verfahren nach Anspruch i bis 3, dadurch gekennzeichnet, daß an Stelle des Ferrosiliciums Calciumsilicium oder ähnliche Legierungen zur Verwendung kommen. Zur-Abgrenzung des ErfindÜngsgegenstands vom Stand' der Technik ist im Erteilungsverfahren folgende Druckschrift in Betracht gezogen worden: Deutsche Patentschrift Nr. 579 96o.3. The method according to claim 1 or 2, characterized in that: ß only part of the silica stone consists of the marked mass which faces the furnace chamber during operation. d .. The method according to claim i to 3, characterized in that calcium silicon or similar alloys are used in place of ferrosilicon. To delimit the subject of the invention from the state of the art, the following publication has been considered in the grant procedure: German patent specification No. 579 96o.
DEK165738D 1942-09-01 1942-09-01 Process for the manufacture of silica stones Expired DE752150C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK165738D DE752150C (en) 1942-09-01 1942-09-01 Process for the manufacture of silica stones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK165738D DE752150C (en) 1942-09-01 1942-09-01 Process for the manufacture of silica stones

Publications (1)

Publication Number Publication Date
DE752150C true DE752150C (en) 1952-10-27

Family

ID=7254609

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK165738D Expired DE752150C (en) 1942-09-01 1942-09-01 Process for the manufacture of silica stones

Country Status (1)

Country Link
DE (1) DE752150C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089680B (en) * 1958-11-24 1960-09-22 Steuler Industriewerke Gmbh Method of making silica stones
DE1167723B (en) * 1959-06-27 1964-04-09 Gen Refractories Ltd Process for the manufacture of silica stones
DE1204570B (en) * 1962-06-13 1965-11-04 Chamotte Ind Process for the production of unfired refractory SiC masses
DE1282535B (en) * 1965-06-10 1968-11-07 Annawerk Gmbh Process for the manufacture of a refractory body
DE3908124A1 (en) * 1989-03-13 1990-09-20 Didier Werke Ag METHOD FOR PRODUCING SILICONE STONES WITH INCREASED RAW DENSITY

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579960C (en) * 1931-11-05 1933-07-03 Klinker U Steinzeugwerke Merte Process for converting quartz

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579960C (en) * 1931-11-05 1933-07-03 Klinker U Steinzeugwerke Merte Process for converting quartz

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1089680B (en) * 1958-11-24 1960-09-22 Steuler Industriewerke Gmbh Method of making silica stones
DE1167723B (en) * 1959-06-27 1964-04-09 Gen Refractories Ltd Process for the manufacture of silica stones
DE1204570B (en) * 1962-06-13 1965-11-04 Chamotte Ind Process for the production of unfired refractory SiC masses
DE1282535B (en) * 1965-06-10 1968-11-07 Annawerk Gmbh Process for the manufacture of a refractory body
DE3908124A1 (en) * 1989-03-13 1990-09-20 Didier Werke Ag METHOD FOR PRODUCING SILICONE STONES WITH INCREASED RAW DENSITY

Similar Documents

Publication Publication Date Title
DE752150C (en) Process for the manufacture of silica stones
DE817271C (en) Process for the manufacture of ovens and oven components
DE618026C (en) Method of cementing iron and steel
DE892364C (en) Process for the production of a protective coating on melting vessels
DE864616C (en) Process for the production of castings with low-carbon outer layers made of cast iron
DE2039060A1 (en) Neutral heat treatment of steel - by heating in enamel smelt for surface protection during forming etc
DE723650C (en) Process for the production of a firing base for porcelain mantle crowns or fillings
DE645806C (en) Shrinkage suppressants
DE888396C (en) Process for the production of a low-nitrogen Thomas steel
DE1583352B1 (en) Coating compound for use in the heat treatment of metal parts
DE385453C (en) Processing of liquid slag from grate furnaces on Portland cement
DE844697C (en) Process for flame cutting of chromium-alloyed steels
DE927126C (en) Process for the production of a highly scalable surface on metallic objects
AT217942B (en) Refractory stone with a metallic hanging device for the delivery of hot brickwork and metallic hanging device for such a refractory stone
DE739165C (en) Refractory masses for the production of stones or ramming masses
DE562162C (en) Procedure for glowing
DE589917C (en) Procedure for case curing
DE626972C (en) Process for covering refractory bricks with a protective layer
DE474237C (en) Process for the production of ceramic tooth replacement parts in connection with a metal backing
DE596745C (en) Process for increasing the mechanical strength of insulators made of ceramic mass
DE1583352C (en) Coating compound for use in the heat treatment of metal parts
DE752376C (en) Process to increase the solubility of citric acid and ammonium citrate in Thomas slag
DE845884C (en) Process for the surface improvement of objects made of iron and steel
DE374118C (en) Process for welding or adding gray cast iron workpieces by aluminothermic means
DE2222959A1 (en) CAST IRON WITH SPHERICAL GRAPHITE, WHICH HAS INCREASED MECHANICAL PROPERTIES AND ITS MANUFACTURING PROCESS