BLOWING LANCE

A blowing lance to be used for the treatment of metallurgical melts includes a lance head having several expansion tuyeres directed to the bath level of the melt and penetrating a front plate of the lance head. They depart from at least one lance channel, which is peripherally surrounded by a supply...

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Hauptverfasser:	FUHRMANN, ERNEST, HOELLWARTH, ERNST, SMEJKAL, HELLMUTH, GRABNER, HANS, EYSN, MANFRED
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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creator	FUHRMANN, ERNEST HOELLWARTH, ERNST SMEJKAL, HELLMUTH GRABNER, HANS EYSN, MANFRED
description	A blowing lance to be used for the treatment of metallurgical melts includes a lance head having several expansion tuyeres directed to the bath level of the melt and penetrating a front plate of the lance head. They depart from at least one lance channel, which is peripherally surrounded by a supply channel and a return channel for a cooling medium. The supply channel is separated from the return channel by a flow deflection piece arranged above the front plate and penetrated by at least one connecting channel connecting the supply and return channels and provided for the cooling medium. In order to considerably increase the service life of the blowing lance and to avoid leakages in the front plate, at least one coolant secondary channel is provided in addition to the at least one connecting channel, which, upon branching off a partial stream of the coolant flowing to the connecting channel, diverts this partial stream into a flow direction deviating from the flow direction in the connecting channel and whose mouth is directed directly towards the center of the front plate.
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They depart from at least one lance channel, which is peripherally surrounded by a supply channel and a return channel for a cooling medium. The supply channel is separated from the return channel by a flow deflection piece arranged above the front plate and penetrated by at least one connecting channel connecting the supply and return channels and provided for the cooling medium. 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In order to considerably increase the service life of the blowing lance and to avoid leakages in the front plate, at least one coolant secondary channel is provided in addition to the at least one connecting channel, which, upon branching off a partial stream of the coolant flowing to the connecting channel, diverts this partial stream into a flow direction deviating from the flow direction in the connecting channel and whose mouth is directed directly towards the center of the front plate.</description><subject>CHEMISTRY</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</subject><subject>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1992</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOB18vEP9_RzV_Bx9HN25WFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8a4BBsYmBkYG5k6GxkQoAQBqNhwT</recordid><startdate>19920520</startdate><enddate>19920520</enddate><creator>FUHRMANN, ERNEST</creator><creator>HOELLWARTH, ERNST</creator><creator>SMEJKAL, HELLMUTH</creator><creator>GRABNER, HANS</creator><creator>EYSN, MANFRED</creator><scope>EVB</scope></search><sort><creationdate>19920520</creationdate><title>BLOWING LANCE</title><author>FUHRMANN, ERNEST ; HOELLWARTH, ERNST ; SMEJKAL, HELLMUTH ; GRABNER, HANS ; EYSN, MANFRED</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0340207B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; ger</language><creationdate>1992</creationdate><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</topic><topic>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</topic><toplevel>online_resources</toplevel><creatorcontrib>FUHRMANN, ERNEST</creatorcontrib><creatorcontrib>HOELLWARTH, ERNST</creatorcontrib><creatorcontrib>SMEJKAL, HELLMUTH</creatorcontrib><creatorcontrib>GRABNER, HANS</creatorcontrib><creatorcontrib>EYSN, MANFRED</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>FUHRMANN, ERNEST</au><au>HOELLWARTH, ERNST</au><au>SMEJKAL, HELLMUTH</au><au>GRABNER, HANS</au><au>EYSN, MANFRED</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>BLOWING LANCE</title><date>1992-05-20</date><risdate>1992</risdate><abstract>A blowing lance to be used for the treatment of metallurgical melts includes a lance head having several expansion tuyeres directed to the bath level of the melt and penetrating a front plate of the lance head. They depart from at least one lance channel, which is peripherally surrounded by a supply channel and a return channel for a cooling medium. The supply channel is separated from the return channel by a flow deflection piece arranged above the front plate and penetrated by at least one connecting channel connecting the supply and return channels and provided for the cooling medium. In order to considerably increase the service life of the blowing lance and to avoid leakages in the front plate, at least one coolant secondary channel is provided in addition to the at least one connecting channel, which, upon branching off a partial stream of the coolant flowing to the connecting channel, diverts this partial stream into a flow direction deviating from the flow direction in the connecting channel and whose mouth is directed directly towards the center of the front plate.</abstract><oa>free_for_read</oa></addata></record>
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language	eng ; ger
recordid	cdi_epo_espacenet_EP0340207B1
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subjects	CHEMISTRY METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
title	BLOWING LANCE
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