DE1024247B - Melting furnace for metals, preferably for aluminum and aluminum alloys - Google Patents
Melting furnace for metals, preferably for aluminum and aluminum alloysInfo
- Publication number
- DE1024247B DE1024247B DEV9389A DEV0009389A DE1024247B DE 1024247 B DE1024247 B DE 1024247B DE V9389 A DEV9389 A DE V9389A DE V0009389 A DEV0009389 A DE V0009389A DE 1024247 B DE1024247 B DE 1024247B
- Authority
- DE
- Germany
- Prior art keywords
- forehearth
- aluminum
- melting furnace
- openings
- metal
- 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
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 16
- 239000002184 metal Substances 0.000 title claims description 16
- 238000002844 melting Methods 0.000 title claims description 9
- 230000008018 melting Effects 0.000 title claims description 9
- 150000002739 metals Chemical class 0.000 title claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 title claims description 3
- 229910052782 aluminium Inorganic materials 0.000 title claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 3
- 238000005192 partition Methods 0.000 claims description 5
- 238000010309 melting process Methods 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical group [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
- F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
- F27B3/065—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement tiltable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
- F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces
- F27B3/045—Multiple chambers, e.g. one of which is used for charging
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D2003/0085—Movement of the container or support of the charge in the furnace or in the charging facilities
- F27D2003/0089—Rotation about a horizontal or slightly inclined axis
- F27D2003/009—Oscillations about a horizontal axis; Rocking
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
Schmelzofen für Metalle, vorzugsweise für Aluminium und Aluminiumlegierungen Schaukelöfen zum Schmelzen von Metallen sind bekannt. Durch die Schaukelbewegung fließt flüssiges Metall periodisch zwischen zwei durch eine Zwischenwand getremnten Räumen, dem Hauptherd und dem Vorherd, hin und zurück, und zwar ,durch Durchlaßöffnunge:n, die sich in der Zwischenwand unterhalb des Metallspiegels befinden.Melting furnace for metals, preferably for aluminum and aluminum alloys Rocking furnaces for melting metals are known. By the rocking motion liquid metal flows periodically between two separated by a partition Rooms, the main hearth and the forehearth, back and forth, namely, through openings: n, which are located in the partition below the metal mirror.
Die Einschmelzleistung des Ofens beruht auf der Wirkung von heißem flüseigem Metall auf das in den Vorherd laufend eingebrachte Schmelzgut.The melting performance of the furnace is based on the effect of hot Liquid metal on the melt material continuously introduced into the forehearth.
Die Erfindung hat die Verbesserung des Schmelzvorganges im Vorherd durch eine besondere Ausbildung der in der Zwischenwand angeordneten Durchlaßöffnungen zum Gegenstand. Von der Größe dieser Öffnungen hängt die Strömungsgeschwindigkeit des durch diese Öffnungen strömenden, Metalls ab. Da die Schaukelbewegung periodisch ist, steigt die Strömungsge-,schwindigkeit bei jedem Hub. von Null auf einen Höchstwert und fällt wieder auf den Wert Null zurück. Es läßt sich jedoch eine mittlere Strömungsgeschwindigkeit errechnen aus dem Querschnitt der Öffnungen und dem Metallvolumen, das während eines Hubes durch die Öffnungen strömt. Durch Versuche wurde gefunden, daß bei einer mittleren Strömungsgeschwindigkeit von 0,3 bis: 0,5 m/sec die beste Schmelzleistung erzielt wird. Eine weitere Verbesserung besteht in einer Neigung der Achsen h (Abb. 1) dieser Öffnungen in Richtung auf den Vorherd nach oben und durch eine Winkelstellung dieser Achsen derart, daß sie sich im Gruind,riß kreuzen (Abb. 2). Durch diese Neigung nach oben werden die Strahlen des in den Vorherd einsitrömende!n heißen Metalls nach oben gelenkt, etwa nach der Mitte des Metallspiegels des Vorherdes, wo sie: auf das eingebrachte Schmie.lzgut treffen und durch ihren Wärmeinhalt einem intensivem Schmelzvorgang bewirken. Durch die Winkelstellung dieser Achsen im Grundriß werden die in den Vorherd eintretenden Metallstrahlen zusammengeführt und treffen sich etwa nahe der Metalloberfläche in der Mitte des- Vorherdes. Dadurch entsteht eine kräftige Turbulenz, die von günstiger Wirkung auf den Einschmelzvorgang des in den Vorherd eingebrachten Schmelzgutes ist.The invention has the improvement of the melting process in the forehearth by a special design of the passage openings arranged in the partition to the subject. The flow velocity depends on the size of these openings of the metal flowing through these openings. Because the rocking motion is periodic the flow rate increases with each stroke. from zero to a maximum and falls back to the value zero. However, it can be an average flow rate calculated from the cross-section of the openings and the metal volume, which during a Hubes flows through the openings. Experiments have found that a medium Flow speed of 0.3 to: 0.5 m / sec achieves the best melting performance will. A further improvement consists in the inclination of the axes h (Fig. 1) of these Openings in the direction of the forehearth up and through an angular position of this Axes in such a way that they cross each other in the ground, cracked (Fig. 2). By this inclination the rays of the hot metal flowing into the forehearth rise upwards directed upwards, approximately to the middle of the metal mirror of the forehearth, where they: meet the Schmie.lzgut brought in and, thanks to their heat content, an intense Cause melting process. The angular position of these axes in the plan the metal beams entering the forehearth come together and meet approximately near the metal surface in the middle of the forehearth. This creates a strong turbulence which has a beneficial effect on the melting process of the in the Melting material introduced beforehand is.
Abb. 1 zeugt beispielsweise einen Schaukelofen schematisch im Aufriß und Schnitt und Abb. 2 den Grun;driß.Fig. 1 shows, for example, a schematic elevation of a rocking stove and section and Fig. 2 the green; driß.
Darin bedeutet a. = Hauptherd, b = Vorherd, c = Zwischen-wand, d = Öffnung für Heizbrenner, e = Rauchgas.abzug, f = Metallspiiegel, g = Durchhlußöffnungen und la = Achsen der Durchflußöffnungen. In den Zeichnungen sind die mechanischen Einrichtungen zum Schaukeim und zum Entleeren des Ofens weggelassen.Here a means. = Main hearth, b = forehearth, c = intermediate wall, d = opening for heating burner, e = flue gas outlet, f = metal mirror, g = flow openings and la = axes of flow openings. In the drawings, the mechanical devices for germination and for emptying the furnace are omitted.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV9389A DE1024247B (en) | 1955-08-25 | 1955-08-25 | Melting furnace for metals, preferably for aluminum and aluminum alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV9389A DE1024247B (en) | 1955-08-25 | 1955-08-25 | Melting furnace for metals, preferably for aluminum and aluminum alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1024247B true DE1024247B (en) | 1958-02-13 |
Family
ID=7572657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEV9389A Pending DE1024247B (en) | 1955-08-25 | 1955-08-25 | Melting furnace for metals, preferably for aluminum and aluminum alloys |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1024247B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0777844A4 (en) * | 1994-09-20 | 1997-11-12 | Comalco Alu | Apparatus and method for the supply of molten metal |
-
1955
- 1955-08-25 DE DEV9389A patent/DE1024247B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0777844A4 (en) * | 1994-09-20 | 1997-11-12 | Comalco Alu | Apparatus and method for the supply of molten metal |
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