DE506303C - Method of operating an electric melting furnace - Google Patents
Method of operating an electric melting furnaceInfo
- Publication number
- DE506303C DE506303C DED57312D DED0057312D DE506303C DE 506303 C DE506303 C DE 506303C DE D57312 D DED57312 D DE D57312D DE D0057312 D DED0057312 D DE D0057312D DE 506303 C DE506303 C DE 506303C
- Authority
- DE
- Germany
- Prior art keywords
- operating
- melting furnace
- electric melting
- electrodes
- lid
- 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
Links
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; Tank furnaces
- F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/08—Apparatus
-
- 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
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/18—Heating by arc discharge
- H05B7/20—Direct heating by arc discharge, i.e. where at least one end of the arc directly acts on the material to be heated, including additional resistance heating by arc current flowing through the material to be heated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
Verfahren zum Betreiben eines Elektroschmelzofens Um bei Lichtbogenöfen mit annähernd kreisförmigem Herd eine gleichmäßigere Beheizung zu erzielen, ist vorgeschlagen worden, Bad und Elektroden um eine vertikale Achse relativ Zueinander zu drehen. Bei solchen Ofen, bei denen die Elektroden durch den Deckel hindurchtreten, muß natürlich auch der Deckel relativ zum Bade mitgedreht werden. Nach den bisher bekannten Vorschlägen ist dies aber praktisch bei Schmelz-und Raffinieröfen für Eisen und Stahl nicht möglich, da infolge der hohen Temperatur der aus Steinen hergestellte Deckel allmählich abschmilzt, so daß sich an der unteren Seite tropfsteinförmige Zapfen bilden, welche ein 'Drehen des Deckels gegenüber der Ausmauerung des Ofengefäßes praktisch unmöglich machen.Method for operating an electric melting furnace Um in electric arc furnaces to achieve a more even heating with an approximately circular stove It has been proposed that bath and electrodes are about a vertical axis relative to one another to turn. In such ovens, where the electrodes pass through the lid, Of course, the lid must also be rotated relative to the bath. After the so far However, this is practical for smelting and refining furnaces for known proposals Iron and steel not possible, as the one made from stones due to the high temperature Lid gradually melts, so that it is stalactite-shaped on the lower side Form pegs, which rotate the lid with respect to the brick lining of the furnace vessel make it practically impossible.
Nach der Erfindung wird diese Schwierigkeit dadurch vermieden, daß eine Hubvorrichtung für den Deckel vorgesehen wird, so daß der Deckel jedesmal vor Einleitung einer Drehbewegung so weit angelüftet werden kann, daß eine Reibung zwischen Deckel und Ofenmauerwerk vermieden wird.According to the invention, this difficulty is avoided in that a lifting device for the lid is provided so that the lid is in front each time Initiation of a rotary movement can be raised so far that there is friction between Cover and furnace masonry is avoided.
In der Zeichnung ist ein Ofen zur Durchführung des Verfahrens dargestellt, und zwar zeigt Abb. i den Ofen im Längsschnitt, Abb.2 gibt einen Querschnitt durch den Ofen wieder. Im Ausführungsbeispiel ist das Ofengefäß i um den Zapfen 2 drehbar gegenüber dem Deckel 3. Durch diesen sind in bekannter Weise die Elektroden q. hindurchgeführt. Der Deckel 3 hängt an den Zugorganen 5 des Hubwerkes 6. Abb. 2 .läßt das Bad und die Elektroden in der Draufsicht erkennen.The drawing shows a furnace for carrying out the method, namely Fig. i shows the furnace in longitudinal section, Fig.2 gives a cross section the oven again. In the exemplary embodiment, the furnace vessel i can be rotated about the pin 2 compared to the cover 3. By this, the electrodes q. passed through. The cover 3 hangs on the pulling elements 5 of the lifting mechanism 6. Fig. 2 leaves the bath and recognize the electrodes in plan view.
Sobald im Elektroofen, wie Abb. 2 zeigt, sich um die Elektroden q. ein flüssiges Bad 7 in der bekannten Form gebildet hat, so daß die festen Schrottberge 8 noch stehen, wird der Deckel 3 mittels des Hubwerkes 6 etwas angelüftet und dann das Ofengefäß i ungefähr um einen Winkel von 30° gedreht, so daß die Elektroden in die punktierte Stellung kommen, wodurch die Schrotthaufen 8 nunmehr auch rasch durch direkte Einwirkung des Lichtbogens geschmolzen werden.As soon as in the electric furnace, as shown in Fig. 2, the electrodes q. has formed a liquid bath 7 in the known form, so that the solid mountains of scrap 8 are still standing, the cover 3 is slightly lifted by means of the lifting mechanism 6 and then the furnace vessel i rotated approximately through an angle of 30 ° so that the electrodes come into the dotted position, whereby the scrap pile 8 now also quickly be melted by direct action of the electric arc.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED57312D DE506303C (en) | Method of operating an electric melting furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED57312D DE506303C (en) | Method of operating an electric melting furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
DE506303C true DE506303C (en) | 1930-09-02 |
Family
ID=7057113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED57312D Expired DE506303C (en) | Method of operating an electric melting furnace |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE506303C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE970588C (en) * | 1954-03-27 | 1958-10-09 | Demag Elektrometallurgie Gmbh | Method for operating electric melting furnaces |
DE972100C (en) * | 1951-03-11 | 1959-05-21 | Demag Elektrometallurgie Gmbh | Electric reduction or smelting furnace |
DE973715C (en) * | 1952-08-31 | 1960-05-19 | Demag Elektrometallurgie Gmbh | Electric arc or reduction furnace |
WO2012156108A1 (en) * | 2011-05-13 | 2012-11-22 | Sms Siemag Ag | Reduction furnace |
-
0
- DE DED57312D patent/DE506303C/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE972100C (en) * | 1951-03-11 | 1959-05-21 | Demag Elektrometallurgie Gmbh | Electric reduction or smelting furnace |
DE973715C (en) * | 1952-08-31 | 1960-05-19 | Demag Elektrometallurgie Gmbh | Electric arc or reduction furnace |
DE970588C (en) * | 1954-03-27 | 1958-10-09 | Demag Elektrometallurgie Gmbh | Method for operating electric melting furnaces |
WO2012156108A1 (en) * | 2011-05-13 | 2012-11-22 | Sms Siemag Ag | Reduction furnace |
RU2551738C1 (en) * | 2011-05-13 | 2015-05-27 | Смс Зимаг Аг | Reducing furnace |
CN103717988B (en) * | 2011-05-13 | 2016-06-08 | Sms集团有限责任公司 | Reduction furnace |
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