Method and furnace for melting steel scrap
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United States of America Patent
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Jul 23, 2013
Grant Date -
Jun 7, 2012
app pub date -
Feb 9, 2012
filing date -
Jun 28, 2006
priority date (Note) -
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Abstract
A melting furnace for smelting scrap includes a heating device extending through a wall of the furnace in order to supply melting energy, wherein the heating device including a tubular body, which encloses a flow channel. Further, the furnace includes a heating zone formed by a longitudinal section of the tubular body configured as an electrodeless plasma torch including an inductive heating coil which encloses the flow channel coaxially. An injection pipe is disposed in a central manner in the flow channel extending up or into to the heating zone, wherein the injection pipe is enclosed by a gas guiding pipe coaxially and at a radial distance. An annular channel is arranged between the injection pipe and the wall of the flow channel for supplying a cooling gas.
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