Electric arc furnace electrode consumption analyzer
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United States of America Patent
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-
Jul 23, 1996
Grant Date -
N/A
app pub date -
Mar 21, 1995
filing date -
Mar 21, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electric arc furnace includes at least one electrode projecting into a furnace vessel for containing a charge to be heated and electrode support structure for moving the electrode in a direction along a path towards and away from the charge. An improvement to the electric arc furnace comprises a sensor for detecting the position of the electrode support structure from an initial position. A processor calculates one of a support structure travel distance from the initial position and a rate of electrode consumption. An alarm signal is generated in response to at least one of the travel distance and the rate of electrode consumption being at least equal to a respective predetermined threshold travel distance or a predetermined threshold rate of electrode consumption, either of which is indicative of an excess electrode consumption condition for a given heat. A power reducer automatically decreases electrical power supplied to the electrode in response to the alarm signal being generated and as a function of a magnitude of the excess electrode consumption.
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