Method for determining a radiation measurement for thermal radiation, arc furnace, a signal processing device, programme code and storage medium for carrying out said method
A signal processing and electric arc furnace technology, which is applied in the fields of determining the radiation metric of thermal radiation and executing the electric arc furnace, signal processing equipment, program code and storage medium, can solve the problems of rising energy consumption of the furnace and improve the operation. , high precision, and the effect of improving the degree of automation
Inactive Publication Date: 2010-12-29
PRIMETALS TECH GERMANY
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Problems solved by technology
The energy consumption of the furnace increases because, on the one hand, the energy of the electric arc furnace is only fed into the melting charge in a small area, and on the other hand, the cooling power for cooling the furnace walls must be increased if necessary
Method used
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Embodiment Construction
[0032] figure 1 An electric arc furnace 1 is shown with a plurality of electrodes 3 a , 3 b , 3 c which are coupled via current leads to a current supply 12 . The current supply device 12 preferably has an electric furnace transformer.
[0033]With the aid of three electrodes 3 a , 3 b , 3 c , charge materials such as scrap steel and / or scrap iron and / or direct reduced iron, possibly with alloying agents and / or additional materials, are melted in the electric arc furnace 1 . To date it is not known exactly how much radiant energy of the arc is fed into the melting charge in the electric arc furnace. It can thus occur that the arcs of the electrodes 3a, 3b and / or 3c are exposed to burning, so that a high proportion of the energy supplied reaches the boundaries of the arc furnace, in particular the side, usually cooled furnace walls 2 of the furnace vessel 1' . This can be the case, for example, after metal scrap collapse or in the case of too low a foam slag height. However...
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The invention relates to an arc furnace, a signal processing device, a programme code and a storage medium for carrying out said method and to a method for determining a radiation measurement for thermal radiation originating from an arc furnace burning between an electrode and a fusible element and which hits a limitation of the arc furnace. The invention also relates to a method wherein a variable characterising an operational state of an electrode of an arc furnace can be determined. An electrode flow guided to the electrode is detected in said method and the structure-borne noise oscillations are detected. From the detected electrode flow, a flow evaluation signal associated with the frequency range of the detected electrode flow is determined. From the detected structure-borne noise oscillations, an oscillation evaluation signal that is associated with a frequency range of the detected structure-borne noise oscillations is detected and a quotient from the oscillation evaluation signal and the flow evaluation signal is formed as a radiation measurement for at least one frequency common to the detected electrode flow and the detected structure-borne noise oscillation.
Description
technical field [0001] The invention relates to a method for determining a radiometric measure of thermal radiation striking an electric arc furnace boundary from an electric arc burning between electrodes and a smelting charge, a signal processing device, a storage medium and a program code for carrying out the method. Background technique [0002] Electric arc furnaces are used to produce liquid metal, usually steel. The liquid metal is produced from a solid smelting charge, such as metal scrap or reduced iron, together with other additional materials. For this purpose, the energy for melting the smelting charge is fed into the electric arc furnace by means of one or more electrodes, usually in the form of an electric arc between the electrodes and the smelting charge. In order to be able to carry out the melting as efficiently as possible, all the energy provided by the arc should be fed into the melting charge as far as possible. Solid material to be melted, liquid met...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H05B7/148C21C5/52F27D19/00
CPCC21C5/5211H05B7/148F27B3/28F27D19/00C21C2005/5288B65G49/061B65G49/067B65G49/068B65G2249/04B65G2249/045Y02P10/25Y02P10/20
Inventor A·多贝勒K·克鲁格T·马特舒拉特D·里格
Owner PRIMETALS TECH GERMANY