DE340021C - Process for firing graphite crucibles and charcoal - Google Patents

Process for firing graphite crucibles and charcoal

Info

Publication number
DE340021C
DE340021C DE1919340021D DE340021DD DE340021C DE 340021 C DE340021 C DE 340021C DE 1919340021 D DE1919340021 D DE 1919340021D DE 340021D D DE340021D D DE 340021DD DE 340021 C DE340021 C DE 340021C
Authority
DE
Germany
Prior art keywords
charcoal
graphite crucibles
crucibles
firing
firing graphite
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
DE1919340021D
Other languages
German (de)
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.)
FRANZ KARL MEISER
Original Assignee
FRANZ KARL MEISER
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 FRANZ KARL MEISER filed Critical FRANZ KARL MEISER
Application granted granted Critical
Publication of DE340021C publication Critical patent/DE340021C/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
    • C04B35/52—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
    • C04B35/528—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 obtained from carbonaceous particles with or without other non-organic components
    • C04B35/532—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 obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)

Description

Verfahren zum Brennen von Graphittiegeln und Kunstkohlen. Um Graphittiegel während des Brandes und der nachfolgenden Abkühlung vor Abbrand zu schützen, brennt man dieselben bei mäßiger Temperatur in Muffeln. Man ist dabei aber an niedrige Temperatur gebunden, weil bei höherer Temperatur durch den in der Muffel enthaltenen Sauerstoff Graphit verbrannt wird. Um bei höherer Temperatur zu brennen, könnte man die bei Kunstkohlen zu diesem Zweck benutzte Einbettung in Kohlepulver anwenden. Zum Zwecke der Graphitierung ist auch schon vorgeschlagen worden, Gase, die unter Abgabe von Kohlenstoff dissocieren, in die Muffel einzuleiten. Die Ausführung dieses Verfahrens ohne Füllpulver ist aber wegen der großen Explosionsgefahr solcher Gase nicht leicht durchführbar.Process for firing graphite crucibles and charcoal. To graphite crucibles to protect from burning during the fire and the subsequent cooling down, burns they are placed in muffles at a moderate temperature. But one is at low levels Temperature bound because at a higher temperature due to that contained in the muffle Oxygen graphite is burned. To burn at a higher temperature, could one can use the embedding in carbon powder used for this purpose with artificial charcoal. For the purpose of graphitization it has also been proposed to use gases below Dissociate the release of carbon into the muffle. The execution of this Process without filling powder is due to the high risk of explosion of such gases not easy to do.

Die Erfindung ermöglicht es, Graphittiegel, Kunstkohlen bei höherer Temperatur ohne Füllpulver zu brennen, und besteht darin, daß die Kassetten mit indifferenten Gasen, Rauchgas, Halbgas, Generatorgas usw., gefüllt gehalten werden. Bei Verwendung von Halbgas wird man den Kohlensäuregehalt so wählen, daß bei der Brenntemperatur der 'Gleichgewichtszustand vorhanden ist, also eine Oxydation des Graphits der Tiegel nicht eintritt.The invention makes it possible to use graphite crucibles, synthetic carbons at higher levels Temperature to burn without filling powder, and consists in that the cassettes with indifferent gases, flue gas, half gas, generator gas, etc., are kept filled. When using half gas you will choose the carbon dioxide content so that in the Firing temperature the 'state of equilibrium is present, thus an oxidation of the Graphite does not enter the crucible.

Bei Einzelöfen sind die Muffeln des Ofens an eine Druckleitung anzuschließen, durch die sie mit indifferentem Gas gefüllt gehalten werden.In the case of individual furnaces, the muffles of the furnace must be connected to a pressure line, by which they are kept filled with inert gas.

Bei Ring- oder Tunnelöfen können die Muffeln in Nebeneinanderschaltung an eine Gasleitung angeschlossen sein, durch die dieselbe mit den Gasen gefüllt gehalten werden oder sie können hintereinander geschaltet sein, so daß das Füllgas nacheinander in schwachem Strom die Muffeln- durchströmt.In the case of ring or tunnel furnaces, the muffles can be connected in parallel be connected to a gas line through which the same is filled with the gases be held or they can be connected in series, so that the filling gas flow through the muffle one after the other in a weak current.

Das Verfahren erlaubt das Brennen von Graphittiegel ohne Füllpulver bei höherer Temperatur durchzuführen und damit bessere Schmelztiegel zu erhalten.The process allows graphite crucibles to be fired without filling powder to be carried out at a higher temperature and thus to obtain better crucibles.

Claims (1)

PATENT-ANsPRUcH: Verfahren zum Brennen von Graphittiegeln und Kunstkohlen, dadurch gekennzeichnet, daß die Muffeln, in denen die Ware gebrannt wird, mit indifferenten oder reduzierenden, bei der Brenntemperatur Kohlenstoff nicht abgebenden Gasen gefüllt gehalten werden.PATENT CLAIM: Process for burning graphite crucibles and charcoal, characterized in that the muffles in which the goods are fired with indifferent or reducing gases that do not release carbon at the firing temperature being held.
DE1919340021D 1919-09-16 1919-09-16 Process for firing graphite crucibles and charcoal Expired DE340021C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE340021T 1919-09-16

Publications (1)

Publication Number Publication Date
DE340021C true DE340021C (en) 1921-08-27

Family

ID=6224369

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1919340021D Expired DE340021C (en) 1919-09-16 1919-09-16 Process for firing graphite crucibles and charcoal

Country Status (1)

Country Link
DE (1) DE340021C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1142309B (en) * 1958-04-21 1963-01-10 Hans Riedhammer Dipl Ing Method and furnace for burning carbon bodies such as electrodes, carbon bricks and the like. like
DE1408351B1 (en) * 1958-02-28 1969-10-02 Aluminium Co Process for burning carbon electrodes in tunnel ovens
DE1671149B1 (en) * 1964-08-27 1971-06-24 Thermal Syndicate Ltd PROCESS FOR SINTERING A MOLDED PART MADE OF FIRE-RESISTANT GRAINY MATERIAL
DE2457923A1 (en) * 1974-12-07 1976-06-10 Sigri Elektrographit Gmbh GRAPHITING OVEN

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1408351B1 (en) * 1958-02-28 1969-10-02 Aluminium Co Process for burning carbon electrodes in tunnel ovens
DE1142309B (en) * 1958-04-21 1963-01-10 Hans Riedhammer Dipl Ing Method and furnace for burning carbon bodies such as electrodes, carbon bricks and the like. like
DE1671149B1 (en) * 1964-08-27 1971-06-24 Thermal Syndicate Ltd PROCESS FOR SINTERING A MOLDED PART MADE OF FIRE-RESISTANT GRAINY MATERIAL
DE2457923A1 (en) * 1974-12-07 1976-06-10 Sigri Elektrographit Gmbh GRAPHITING OVEN

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