Methods and devices for regulating the flow rate and for slowing down non-ferromagnetic, electrically conductive liquids and melts
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United States of America Patent
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Jan 1, 2013
Grant Date -
Jul 21, 2011
app pub date -
Feb 7, 2011
filing date -
Aug 7, 2008
priority date (Note) -
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Abstract
A regulating device regulates the flow rate of non-ferromagnetic, electrically conducting liquids and melt streams through magnetic fields inducing eddy currents in the melt stream. In a preferred embodiment, the regulating device controls the melt stream using at least one stationary magnetic field with a constant polarity, at least one stationary magnetic alternating field or using a multi-poled magnetic travelling field, in such a way that the magnetic field lines transversally penetrate the melt flow across the entire cross section thereof and such that a voltage is induced in the melt stream by the magnetic fields.
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