Control system for electrical furnaces
AssigneeElkem-Spigerverket
InventorsBjorn Asphaug, Thor Pedersen
Life of this patent
Estimating the term…
Abstract
A computerized control system for receiving information concerning the operating parameters in an electrical furnace, and for controlling the feeding of corrective and additive charge to the furnace, for controlling the position of the electrodes, and for controlling the power consumed by the furnace. The system includes a discharge hopper for the selective discharge of solid materials to electric smelting furnaces. The hopper comprises a transit part and a reservoir part. Because of its physical construction, the transit part will empty before the reservoir part, but when the transit part is empty the contents of the reservoir part will follow automatically.
Claims16
A control system for electrical furnaces comprising:
- 1. computer means operative to receive a plurality of input signals indicative of metallurgical process parameters, and further operative to process said plurality of input signals and to generate a plurality of output signals for controlling the quantity and mixture of charge fed to the associated furnace, for controlling the position of the electrodes in the associated furnace, and for controlling the power consumed by the associated furnace;
- and
- 2. charge feed means operative in response to at least one of said plurality of output signals to feed and control the quantity and mixture of charge to the associated furnace.
A control system for electrical furnaces comprising:
- 1. computer means operative to receive a plurality of input signals indicative of metallurgical process parameters, and further operative to process said plurality of input signals and to generate a plurality of output signals for controlling the charge fed to the associated furnace, for controlling the position of the electrodes in the associated furnace, and for controlling the power consumed by the associated furnace;
- 2. charge feed means operative in response to at least one of said plurality of output signals to feed quantities of corrective and additive charge to the associated furnace;
- 3. carbon balance control means operative to control carbon content in the charge in the associated furnace in a closed loop mode;
- 4. current control means operative to control the currents through the electrodes of the associated furnace in a closed loop mode;
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- 5. electrode control means operative to control the positions of the electrodes in the associated furnace in a closed loop mode.
Dependencies are inferred from the claim text.