Method for controlling a molten metal bath bubbling in a metallurgical vessel and a device for carrying out said method
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United States of America Patent
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Aug 24, 2010
Grant Date -
Jun 11, 2009
app pub date -
Dec 16, 2008
filing date -
Jul 2, 2004
priority date (Note) -
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Abstract
A device for control of bubbling of a metal bath in a ladle or in another similar metallurgical vessel including a bottom injector linked to a source of supply of pressurized stirring gas to be injected with aid of a pipe provided with a facility for adjusting flow rate, at least one vibration sensor mounted on the vessel itself or on a support frame, a signal processing unit processing a vibratory signal gathered by the sensor, and wherein the signal processing unit includes at least, and in successive order of processing of the vibratory signal, a high-pass analog filter, a digitizer, a digital filter calibrated on vibratory responses of the ladle, and a computer for computing a sliding temporal quadratic mean of RMS type.
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