Direct current arc furnace operation involves feeding a gas through the melt to raise the surface and reduce the distance to the electrode
A process for operating a direct current arc furnace comprises feeding flushing and/or process gas through nozzles or stones in the floor of the container that holds the melt (5). The gas is supplied with an intensity that causes the melt surface to build up, reducing the distance between the melt a...
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| description | A process for operating a direct current arc furnace comprises feeding flushing and/or process gas through nozzles or stones in the floor of the container that holds the melt (5). The gas is supplied with an intensity that causes the melt surface to build up, reducing the distance between the melt and the electrode, so the arc is deflected to the side of the built-up area.
Ein Verfahren zum Betreiben eines Gleichstromlichtbogen-Schmelzofens (1), bei dem Spülgas (4) und/oder Prozessgas durch Unterbaddüsen (2) oder Spülsteine (3) im Gefäßboden (1a) an die Schmelze (5) eingeleitet wird, dient der Vergleichmäßigung der thermischen Gefäßbelastung bei Gleichstromlichtbogen-Schmelzöfen (1) durch eine Kontrolle der Lage des Lichtbogens (7) und/oder der Orientierung und wird dahingehend ausgeübt, dass durch einen oder mehrere im Bereich einer Graphit-Elektrode (6) liegende Unterbaddüsen (2) und/oder Spülsteine (3), Spülgas (4) in einer solchen Intensität eingeleitet wird, dass eine Wallung (8) im Badspiegel der Schmelze (5) den Abstand zur Elektrode (6) vermindert, d. h. der Lichtbogen (7) seitlich zur Wallung (8) hin abgelenkt wird. |
| format | Patent |
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Ein Verfahren zum Betreiben eines Gleichstromlichtbogen-Schmelzofens (1), bei dem Spülgas (4) und/oder Prozessgas durch Unterbaddüsen (2) oder Spülsteine (3) im Gefäßboden (1a) an die Schmelze (5) eingeleitet wird, dient der Vergleichmäßigung der thermischen Gefäßbelastung bei Gleichstromlichtbogen-Schmelzöfen (1) durch eine Kontrolle der Lage des Lichtbogens (7) und/oder der Orientierung und wird dahingehend ausgeübt, dass durch einen oder mehrere im Bereich einer Graphit-Elektrode (6) liegende Unterbaddüsen (2) und/oder Spülsteine (3), Spülgas (4) in einer solchen Intensität eingeleitet wird, dass eine Wallung (8) im Badspiegel der Schmelze (5) den Abstand zur Elektrode (6) vermindert, d. h. der Lichtbogen (7) seitlich zur Wallung (8) hin abgelenkt wird.</description><edition>7</edition><language>eng ; ger</language><subject>BLASTING ; CHEMISTRY ; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE ; FURNACES ; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; HEATING ; KILNS ; LIGHTING ; MECHANICAL ENGINEERING ; METALLURGY ; METALLURGY OF IRON ; OPEN SINTERING OR LIKE APPARATUS ; OVENS ; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL ; RETORTS ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE ; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS ; WEAPONS</subject><creationdate>2002</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20021107&DB=EPODOC&CC=DE&NR=10121967A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20021107&DB=EPODOC&CC=DE&NR=10121967A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>UEBBER, NORBERT</creatorcontrib><title>Direct current arc furnace operation involves feeding a gas through the melt to raise the surface and reduce the distance to the electrode</title><description>A process for operating a direct current arc furnace comprises feeding flushing and/or process gas through nozzles or stones in the floor of the container that holds the melt (5). The gas is supplied with an intensity that causes the melt surface to build up, reducing the distance between the melt and the electrode, so the arc is deflected to the side of the built-up area.
Ein Verfahren zum Betreiben eines Gleichstromlichtbogen-Schmelzofens (1), bei dem Spülgas (4) und/oder Prozessgas durch Unterbaddüsen (2) oder Spülsteine (3) im Gefäßboden (1a) an die Schmelze (5) eingeleitet wird, dient der Vergleichmäßigung der thermischen Gefäßbelastung bei Gleichstromlichtbogen-Schmelzöfen (1) durch eine Kontrolle der Lage des Lichtbogens (7) und/oder der Orientierung und wird dahingehend ausgeübt, dass durch einen oder mehrere im Bereich einer Graphit-Elektrode (6) liegende Unterbaddüsen (2) und/oder Spülsteine (3), Spülgas (4) in einer solchen Intensität eingeleitet wird, dass eine Wallung (8) im Badspiegel der Schmelze (5) den Abstand zur Elektrode (6) vermindert, d. h. der Lichtbogen (7) seitlich zur Wallung (8) hin abgelenkt wird.</description><subject>BLASTING</subject><subject>CHEMISTRY</subject><subject>CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS</subject><subject>DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE</subject><subject>FURNACES</subject><subject>FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL</subject><subject>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</subject><subject>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</subject><subject>HEATING</subject><subject>KILNS</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>OPEN SINTERING OR LIKE APPARATUS</subject><subject>OVENS</subject><subject>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</subject><subject>RETORTS</subject><subject>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</subject><subject>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</subject><subject>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjUEKwjAURLtxIeodvgcQjILiUmzFA7gvn2TaBmJSfpIewlPbVg_g6jHD8GZZvEsr0Il0FoFPxKKpyeJZg0IP4WSDJ-uH4AZEagBjfUtMLUdKnYTcdiNBL7hEKZCwjZibmKWZNOwNCUzW39rYmNhPIcwZbvyXYLAuFg27iM2Pq2J7r563xw59qBH70eWR6rJSe3VQl9P5qo7_bD5E8kxt</recordid><startdate>20021107</startdate><enddate>20021107</enddate><creator>UEBBER, NORBERT</creator><scope>EVB</scope></search><sort><creationdate>20021107</creationdate><title>Direct current arc furnace operation involves feeding a gas through the melt to raise the surface and reduce the distance to the electrode</title><author>UEBBER, NORBERT</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_DE10121967A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; ger</language><creationdate>2002</creationdate><topic>BLASTING</topic><topic>CHEMISTRY</topic><topic>CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS</topic><topic>DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE</topic><topic>FURNACES</topic><topic>FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL</topic><topic>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</topic><topic>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</topic><topic>HEATING</topic><topic>KILNS</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>OPEN SINTERING OR LIKE APPARATUS</topic><topic>OVENS</topic><topic>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</topic><topic>RETORTS</topic><topic>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</topic><topic>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</topic><topic>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>UEBBER, NORBERT</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>UEBBER, NORBERT</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Direct current arc furnace operation involves feeding a gas through the melt to raise the surface and reduce the distance to the electrode</title><date>2002-11-07</date><risdate>2002</risdate><abstract>A process for operating a direct current arc furnace comprises feeding flushing and/or process gas through nozzles or stones in the floor of the container that holds the melt (5). The gas is supplied with an intensity that causes the melt surface to build up, reducing the distance between the melt and the electrode, so the arc is deflected to the side of the built-up area.
Ein Verfahren zum Betreiben eines Gleichstromlichtbogen-Schmelzofens (1), bei dem Spülgas (4) und/oder Prozessgas durch Unterbaddüsen (2) oder Spülsteine (3) im Gefäßboden (1a) an die Schmelze (5) eingeleitet wird, dient der Vergleichmäßigung der thermischen Gefäßbelastung bei Gleichstromlichtbogen-Schmelzöfen (1) durch eine Kontrolle der Lage des Lichtbogens (7) und/oder der Orientierung und wird dahingehend ausgeübt, dass durch einen oder mehrere im Bereich einer Graphit-Elektrode (6) liegende Unterbaddüsen (2) und/oder Spülsteine (3), Spülgas (4) in einer solchen Intensität eingeleitet wird, dass eine Wallung (8) im Badspiegel der Schmelze (5) den Abstand zur Elektrode (6) vermindert, d. h. der Lichtbogen (7) seitlich zur Wallung (8) hin abgelenkt wird.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OPEN SINTERING OR LIKE APPARATUS OVENS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL RETORTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS WEAPONS |
| title | Direct current arc furnace operation involves feeding a gas through the melt to raise the surface and reduce the distance to the electrode |
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