APPARATUS AND METHOD FOR SUPPLYING HEAT TO A METAL MELT
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United States of America Patent
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Issued Date -
Dec 5, 2013
app pub date -
Dec 22, 2011
filing date -
Jan 4, 2011
priority date (Note) -
Abandoned
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Abstract
The invention relates to a device and a method for supplying heat to a metal melt, where in a closed container (11) with openings (13,14) for supply and discharge of the melt and where a sub pressure may be formed, a rotor (16) in the form of a hallow rotation body and a hollow driving shaft (20) containing the electrode (23) for supply of electric current for formation of an electric arc (34) towards the surface (31) of the metal of the melt. The lower end of the electrode (23) is positioned in a hollow head with an opening (35) downwards towards the bottom of the container (11). The hollow head is configured to provide access to the surface (31) of the metal melt, so that the electric arc (34) is formed inside the head and where the hollow driving shaft (20) possibly is configured for supply of gas to the metal melt. The lower end surface of the rotor (16) is configured so that a pumping effect in the heated melt beneath the lower end of the rotor (26) is formed, moving the heated melt sideways away from the rotor (16) along the lower, external end surface of the rotor (16).
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