DE697498C - Process for the production of highly refractory ores - Google Patents

Process for the production of highly refractory ores

Info

Publication number
DE697498C
DE697498C DE1939E0053061 DEE0053061D DE697498C DE 697498 C DE697498 C DE 697498C DE 1939E0053061 DE1939E0053061 DE 1939E0053061 DE E0053061 D DEE0053061 D DE E0053061D DE 697498 C DE697498 C DE 697498C
Authority
DE
Germany
Prior art keywords
production
highly refractory
titanium oxide
refractory ores
small amounts
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
DE1939E0053061
Other languages
German (de)
Inventor
Dr Otto Krause
Max Schiedeck
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.)
ELEKTROSCHMELZWERK KEMPTEN AKT
Original Assignee
ELEKTROSCHMELZWERK KEMPTEN AKT
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 ELEKTROSCHMELZWERK KEMPTEN AKT filed Critical ELEKTROSCHMELZWERK KEMPTEN AKT
Priority to DE1939E0053061 priority Critical patent/DE697498C/en
Application granted granted Critical
Publication of DE697498C publication Critical patent/DE697498C/en
Expired 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • 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
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides

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)
  • Ceramic Products (AREA)

Description

Verfähren zur Herstellung von hochfeuerfesten Erzeugnissen, - z. B. von Steinen, Kitten usw. Hochfeuerfeste Erzeugnisse unter Verwen- dung von Siliciumcarbid werden im aUg-c- meinen in der Weise hergestellt, daß man Siliciumcarbid verschiedener Körnungen mit 3 oder mehr Prozent Bindeton mischt und dann brennt. An derartige Erzeugnisse, z. B. Steine, Kitte u. dgl., werden. bei- ihrer Ver- wendung z. B. als feuerfester Stoff sehr hohe Anforderungen bezüglich Lebensdauer, Hkze- b,estäii#dibkeit usw. gestellt. Die Erzeugnisse -sollen vor allem -sehr dicht sein und rüg; lichst wenig Lufträume einschließen, so daß gie Gasen und Dämpfen, die das Silsciu:m- carbid ;angreifen könnten, weitgehend Wider- stand leisten. Es wurde ein Verfahren gefunden, durch weIches der Gebrauchswert derartiger Massen erheblich gesteigert wird. Das Verfahren be- ruht auf der Bildung glasartiger Schmelzen innerhalb der Erzeugnisse und auf ihrer Oberfläche, 'durch welche vor allem -die lscheänbare Porasität herabgesetzt und auch die Dichte erhöht wird. Gemäß der Erfindung wind so vorgegangen, daß man einer an sich bekannten Mischung von z. B. körnigem Sili= ciunicarbid und 3 oder mehr Prozent Bindeton geringe Mengen Titanoxyd zusetzt, worauf *die Masse, wie üblich, gegebenenfalls geformt und gebramlt wird. Wie gefunden wurde, 'hat sich ein Gehalt der Masse von etwa 10/6 Titanoxyd als besonders vorteilhaft erwiesen. Darüber und darunter werden im allgemeinen keine günstigeren Ergebnisse er, zielt. Sollte die Masse nicht schon an sich, z. B. aus Ver unrellrigungen des Silicium@caxbids, Eisenoxyd enthalten, so ist es vorteilhaft, solches ebenfalls in, Mengen von etwa i % der Masse zuzusetzen. Es hat sich gezeigt, daß Erzeugnisase aus derartigen. Massen erheblich längere- Lebensdauer besitzen als solche ohne Zusatz von Titanoxyd.Process for the production of highly refractory products, - z. B. of stones, putty, etc. Highly refractory products using the formation of silicon carbide are mean made in such a way that one Silicon carbide of various grain sizes with 3 or more percent binding clay mixes and then burns. To such products, e.g. B. Stones, putty and the like. both of their application z. B. very high as a refractory material Requirements regarding service life, heating b, estäii # dibkeit etc. posed. The products - Above all - should be very tight and reprimand; include as few air spaces as possible, so that gie gases and vapors that the Silsciu: m- carbide; could attack, largely cons stand afford. A method was found by what the use value of such masses is increased significantly. The procedure is rests on the formation of vitreous melts within the products and on their surface, through which, above all, the fragile porosity is reduced and the density is also increased. According to the invention wind so proceeded that one known per se mixture of z. B. granular silicon carbide and 3 or more percent binding clay add small amounts of titanium oxide, whereupon the mass, as usual, is optionally shaped and crumbled. It has been found that a mass content of about 10/6 titanium oxide has proven to be particularly advantageous. Above and below this, no more favorable results are generally obtained. Should not the mass in itself, z. B. from Ver unrellrigungen des Silicium @ caxbids, contain iron oxide, it is advantageous to add such also in amounts of about i% of the mass. It has been shown that product nose from such. Masses have a considerably longer lifespan than those without the addition of titanium oxide.

Claims (2)

PATLNI'ANSPRÜCHl:: i. Verfahren zur Herstellung von ho.eli- feuerfesten Erzeugnissen, z. B. von Sbeä- nen, Kitten usw., durch Brennen, gegebie- nenfalls nach Formung einer Mischung
aus Bindeton und einer überwiegenden Menge von Sihdumcarbid, dadurch gekennzeichnet, daß der Mischung geringe Mengen Titanoxyd, vornehmlich etwa i %, zugesetzt Werden. PATLNI CLAIMS: i. Process for the production of ho.eli- refractory products, e.g. B. from Sbeä- kittens, etc., by burning, given possibly after forming a mixture
made of binding clay and a predominant amount of silicon carbide, characterized in that small amounts of titanium oxide, primarily about 1%, are added to the mixture. 2. Auerführung nach Anspruch i, da. durch gekennzeichnet, daß Mischungen verwendet werden, die außer Titanoxyd auch geringe Mengen Eisenoxyd, vornehmlich etwa i %, enthalten. -2. Implementation according to claim i, there. characterized in that mixtures are used which, in addition to titanium oxide, also contain small amounts of iron oxide, primarily about 1%, contain. -
DE1939E0053061 1939-10-18 1939-10-20 Process for the production of highly refractory ores Expired DE697498C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1939E0053061 DE697498C (en) 1939-10-18 1939-10-20 Process for the production of highly refractory ores

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE868858X 1939-10-18
DE1939E0053061 DE697498C (en) 1939-10-18 1939-10-20 Process for the production of highly refractory ores

Publications (1)

Publication Number Publication Date
DE697498C true DE697498C (en) 1942-05-07

Family

ID=25951381

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1939E0053061 Expired DE697498C (en) 1939-10-18 1939-10-20 Process for the production of highly refractory ores

Country Status (1)

Country Link
DE (1) DE697498C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972986C (en) * 1951-10-28 1959-11-12 Didier Werke Ag Process for the production of silicon carbide bricks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972986C (en) * 1951-10-28 1959-11-12 Didier Werke Ag Process for the production of silicon carbide bricks

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