DE855149C - Rotary furnace for melting metals - Google Patents

Rotary furnace for melting metals

Info

Publication number
DE855149C
DE855149C DESCH1785D DESC001785D DE855149C DE 855149 C DE855149 C DE 855149C DE SCH1785 D DESCH1785 D DE SCH1785D DE SC001785 D DESC001785 D DE SC001785D DE 855149 C DE855149 C DE 855149C
Authority
DE
Germany
Prior art keywords
furnace
cross
section
melting metals
rotary furnace
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
DESCH1785D
Other languages
German (de)
Inventor
Peter Dipl-Ing Schmidt
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.)
KARL SCHMIDT METALLSCHMELZWERK
Original Assignee
KARL SCHMIDT METALLSCHMELZWERK
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 KARL SCHMIDT METALLSCHMELZWERK filed Critical KARL SCHMIDT METALLSCHMELZWERK
Priority to DESCH1785D priority Critical patent/DE855149C/en
Application granted granted Critical
Publication of DE855149C publication Critical patent/DE855149C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/2083Arrangements for the melting of metals or the treatment of molten metals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Description

Die Erfindung betrifft einen Drehofen zum Schmelzen von Metallen, der eine im Querschnitt vieleckige Ofenausmauerung aufweist. Solche Öfen dienen insbesondere zum Schmelzen von Leicht-. metallen in einem Salzbad. Die im Querschnitt vieleckige Ofenausmauerung begünstigt das Wälzen der meist kleinstückigen Metallteile und beschleunigt das Niederschmelzen derselben. Es hat sich aber gezeigt, daß die Ausmauerung in den ebenen Flanken rasch ausgewaschen wird, so daß der Querschnitt bald eine nahezu runde Form erhält und der Wälzvorgang nunmehr benachteiligt wird.The invention relates to a rotary furnace for melting metals, which has a furnace lining that is polygonal in cross-section. Such ovens are used especially for melting light. metals in a salt bath. The in cross section Polygonal furnace lining promotes rolling of the mostly small-sized metal parts and accelerates the melting down of the same. But it has been shown that the Lining in the flat flanks is washed out quickly, so that the cross-section soon takes on an almost round shape and the rolling process is now disadvantaged.

Durch die Erfindung wird dieser Nachteil behoben, und zwar im wesentlichen dadurch, daß die Seiten des Vielecks der Ofenausmauerung nach dem Ofeninneren zu ausgebogen sind.The invention substantially overcomes this disadvantage in that the sides of the polygon of the furnace lining towards the furnace interior are bent.

In der Zeichnung ist die Erfindung beispielsweise erläutert, und zwar zeigt Abb. i den schematischen Querschnitt durch einen Ofen bekannter Bauart und Abb. 2 den Querschnitt durch einen Ofen gemäß der Erfindung.In the drawing, the invention is explained by way of example, namely Fig. i shows the schematic cross section through a furnace of known type and Fig. 2 shows the cross section through a furnace according to the invention.

Bei den bekannten Öfen nach Abb. i besitzt die Ofenausmauerung die Querschnittsform a, in diesem Falle eines gleichseitigen Sechsecks. Nach kurzer Betriebszeit werden die ebenen Flanken zu einer Form etwa nach der gezeichneten Linie b ausgeweitet, so daß die Ofenausmauerung rund wird.In the known furnaces according to Fig. I, the furnace lining has the Cross-sectional shape a, in this case an equilateral hexagon. After short Operating time, the flat flanks become a shape roughly like the one drawn Line b widened so that the furnace lining is round.

Gemäß der Erfindung soll nun dieser Ausweitung dadurch begegnet werden, daß die Ofenausmauerung eine Querschnittsform etwa gemäß der Linie c in Abb. i erhält.According to the invention, this expansion is now to be countered by that the furnace lining is given a cross-sectional shape roughly along line c in Fig. i.

Abb. 2 zeigt eine zweckmäßige Ausgestaltung der Ausmauerung gemäß der Erfindung. Bei dieser weist das Vieleck nicht mehr scharfe Ecken auf, sondern ist nach der Kurve d abgerundet. Der Ofen gemäß der Erfindung ergibt eine etwa doppelte Lebensdauer im Vergleich zu den bisherigen Ofen.Fig. 2 shows an expedient embodiment of the masonry according to the invention. In this case, the polygon no longer has sharp corners, but rather is rounded off after curve d. The furnace according to the invention gives about double that Lifespan compared to the previous furnace.

Außer der in `Abb. i gezeigten Ofenbauart sind auch Trommelöfen vorgeschlagen worden, deren Querschnitt in das Ofeninnere vorspringende Kanten aufweist, so daß der freie Querschnitt z. B. die Form eines Kleeblatts erhält. Benutzt man diese Trommelöfen lediglich als Kippöfen, dann mag die Ausbildung ihres Querschnittes gewisse Vorteile bieten, müssen sie jedoch voll umlaufen, dann werden die nach innen vorspringenden Kanten noch viel rascher weggewaschen als die ebenen Flanken a in der Abb. i der Zeichnung. Jene Ofen sind also bei Verwendung als Drehöfen nicht einmal so wirksam wie die in Abb. i dargestellten bekannten vieleckigen Öfen:Except for the one shown in `Fig. The type of furnace shown, drum furnaces are also proposed have been, the cross-section of which has protruding edges into the furnace interior, so that the free cross-section z. B. is given the shape of a clover leaf. If you use this Drum furnaces only as tilting furnaces, then the design of their cross-section may be preferred offer certain advantages, but if they have to circulate fully, then they become inward protruding edges washed away much more quickly than the flat flanks a in of fig. i of the drawing. Those ovens are therefore not used as rotary ovens once as effective as the well-known polygonal ovens shown in Fig. i:

Claims (2)

PATENTANSPRÜCHE: i. Drehofen zum Schmelzen von Metallen, der eine im Querschnitt vieleckige Ofenausmauerung aufweist, dadurch gekennzeichnet, daß die Seiten des Vielecks nach dem Ofeninneren zu ausgebogen sind. PATENT CLAIMS: i. Rotary furnace for melting metals, which has a furnace lining of polygonal cross-section, characterized in that the sides of the polygon are bent towards the inside of the furnace. 2. Drehofen nach Anspruch i, dadurch gekennzeichnet, daß das Vieleck abgerundete Ecken aufweist. Angezogene Druckschriften: Deutsche Patentschriften Nr. 673 858, 676 2i7.2. Rotary kiln according to claim i, characterized in that the polygon has rounded corners. Cited publications: German patent specifications No. 673 858, 676 217.
DESCH1785D 1942-12-10 1942-12-10 Rotary furnace for melting metals Expired DE855149C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH1785D DE855149C (en) 1942-12-10 1942-12-10 Rotary furnace for melting metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH1785D DE855149C (en) 1942-12-10 1942-12-10 Rotary furnace for melting metals

Publications (1)

Publication Number Publication Date
DE855149C true DE855149C (en) 1952-11-10

Family

ID=7423009

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH1785D Expired DE855149C (en) 1942-12-10 1942-12-10 Rotary furnace for melting metals

Country Status (1)

Country Link
DE (1) DE855149C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531876C1 (en) * 1985-09-06 1987-04-30 Riedhammer Ludwig Gmbh Rotary tube for a rotary tubular kiln and rotary tubular kiln

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE673858C (en) * 1936-04-16 1939-03-30 Duerener Metallwerke Akt Ges Process and device for remelting and refining light metal waste
DE676217C (en) * 1936-08-23 1939-05-30 Karl Hermann Doenicke Fully rotating metal melting furnace for processing easily oxidizable, contaminated light metal residues

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE673858C (en) * 1936-04-16 1939-03-30 Duerener Metallwerke Akt Ges Process and device for remelting and refining light metal waste
DE676217C (en) * 1936-08-23 1939-05-30 Karl Hermann Doenicke Fully rotating metal melting furnace for processing easily oxidizable, contaminated light metal residues

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531876C1 (en) * 1985-09-06 1987-04-30 Riedhammer Ludwig Gmbh Rotary tube for a rotary tubular kiln and rotary tubular kiln

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