2019
DOI: 10.1088/2516-1067/ab30dd
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Pilot-scale AC electric arc furnace plasma characterization

Abstract: Fundamental knowledge of the electric arc properties is important for the development of process control of electric arc furnaces. In this work, a pilot-scale AC electric arc has been studied with optical emission spectroscopy together with filtered camera footage. The properties of the arcs were determined with plasma diagnostics and image analysis in order to obtain both the characteristic plasma parameters and the physical form of the arc. The plasma temperatures, ranging from 4500 to 9000 K, were derived i… Show more

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Cited by 11 publications
(14 citation statements)
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“…It was noted in a previous work on pilot-scale EAF that the plasma temperature, especially for calcium, is strongly affected by the slag composition. 28) In the present work, it was found out that the CaF 2 content in the slag correlates with the plasma temperature that was determined with the Ca I lines in the Table 1 using Eq. (1).…”
Section: Resultsmentioning
confidence: 57%
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“…It was noted in a previous work on pilot-scale EAF that the plasma temperature, especially for calcium, is strongly affected by the slag composition. 28) In the present work, it was found out that the CaF 2 content in the slag correlates with the plasma temperature that was determined with the Ca I lines in the Table 1 using Eq. (1).…”
Section: Resultsmentioning
confidence: 57%
“…Furthermore, the spectra from an industrial LF do not always reach the quality of for example pilot-scale EAF spectra. 28) The effect of error from the overlap has been minimized by fitting all the emission lines corresponding to emissions also from the slag components other than calcium, magnesium, and manganese.…”
Section: Resultsmentioning
confidence: 99%
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“…Because the electron density of the plasma refers to the number of charge carriers per volume, the electrical conductivity of the arc could also be evaluated. Furthermore, a previous study in a pilot‐scale EAF has compared the OES plasma diagnostics with the physical dimensions of the arc, [ 27 ] providing information on the arc characteristics.…”
Section: Resultsmentioning
confidence: 99%
“…The plasma characterization was done to find out the plasma temperature and electron density for every sample. The description of the plasma characterization methods can be found elsewhere [19]. The average plasma temperature lies between 13,000 and 16,000 K during the signal acquisition, for the samples considered for study (S1-S16), which is reasonable for a LIBS plasma.…”
Section: Plasma Characterizationmentioning
confidence: 99%