Method for operating an arc furnace and smelting system having an arc furnace operated according to the method
AssigneePrimetals Technologies Germany GmbH
InventorsRalph-Herbert Backes, Arno Döbbeler
Life of this patent
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Abstract
At least one measurement value of a measurement variable characterizing the operating state of each of a plurality of system components that influence the operating conditions of an arc furnace is detected and compared to a respective currently permissible threshold value for the measurement variable. A maximum power that can be supplied to the arc furnace within a time window while satisfying all currently permissible threshold values is determined based on the result of the comparison.
Claims20
A method for operating an electric arc furnace, comprising:
- determining a time window shorter than a smelting time;
- detecting at least one measured value of a measurement variable which characterizes an operating state, for each of a plurality of different plant components which influence operating conditions of the electric arc furnace;
- comparing the at least one measured value with a currently permissible limiting value for each measurement variable to obtain comparison results;
- determining, by reference to the comparison results, a maximum power which can be fed to the electric arc furnace within the time window while adhering to each currently permissible limiting value;
- and
- operating the electric arc furnace during the time window by supplying no more than the maximum power that was determined.
A smelting plant with an electric arc furnace, comprising:
- a plurality of measurement equipment sensing measured values of measurement variables characterizing operating states of different plant components which influence operating conditions of the electric arc furnace;
- and
- at least one programmed processor in a control and analysis facility evaluating the measured values and controlling the electric arc furnace by
- determining a time window shorter than a smelting time;
- comparing each of the measured values with a currently permissible limiting value for each measurement variable to obtain comparison results, and
- determining, by reference to the comparison results, a maximum power which can be fed to the electric arc furnace within the time window while adhering to each currently permissible limiting value.
Dependencies are inferred from the claim text.