scholarly journals Virtual Neutral to Ground Voltage as Stability Index for Electric Arc Furnaces

2011 ◽  
Vol 51 (11) ◽  
pp. 1846-1851 ◽  
Author(s):  
Fernando Martell ◽  
Alejandro Deschamps ◽  
Rafael Mendoza ◽  
Miguel Meléndez ◽  
Armando Llamas ◽  
...  
Keyword(s):  
Stability Index ◽  
Electric Arc ◽  
Electric Arc Furnaces ◽  
Arc Furnaces

scholarly journals New Arc Stability Index for Industrial AC Three-Phase Electric Arc Furnaces Based on Acoustic Signals

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6840
Author(s):  
Juan Guerra-Serrano ◽  
Angel Sánchez-Roca ◽  
Guillermo González-Yero ◽  
Mario C. Sánchez-Orozco ◽  
Mercedes Pérez de la Parte ◽  
...  
Keyword(s):  
Harmonic Distortion ◽  
Stability Index ◽  
Melting Process ◽  
Acoustic Signals ◽  
Electric Arc ◽  
Electrical Networks ◽  
Electric Arc Furnaces ◽  
Arc Furnaces ◽  
Starting Point ◽  
Three Phase

This research proposes a new index to evaluate the stability of the melting process, in three-phase electric arc furnaces (EAFs), based on the acoustic signals generated during the different stages of the casting. The proposed stability index is obtained by characterizing the time and frequency domain of the acoustic signals. During EAF monitoring, acoustic signals were acquired using a microphone coupled to an NI USB-9234 acquisition system. To validate the results, the voltage and current signals were measured with the aid of a Circutor AR6 power analyzer for three-phase electrical networks. The results showed that the acoustic signal energy in the frequency range of 1 to 12 kHz can be used as an indicator of the process stability in the EAF. Finally, the validity of the proposed stability index is evaluated from the process characterization using the harmonic distortion analysis methods and the dynamic U-I characteristics of the arc voltage and current signals. The results obtained demonstrated the effectiveness of the proposal and constitute a starting point for advances in the automatic control of the process in the EAF, from the acoustic signals.

Predicting the Power Consumption during Furnace Charge Melting in Steelmaking Electric Arc Furnaces

Vestnik MEI ◽  
2019 ◽  
Vol 6 ◽  
pp. 83-90
Author(s):  
Anatoliy M. Kruchinin ◽  
◽  
Mikhail Ya. Pogrebisskiy ◽  
Elena S. Ryazanova ◽  
Andrey Yu. Chursin ◽  
...  
Keyword(s):  
Power Consumption ◽  
Electric Arc ◽  
Furnace Charge ◽  
Electric Arc Furnaces ◽  
Arc Furnaces

Virtual Analyzer of the Voltage and Current Spectrum of the Electric Arc in Electric Arc Furnaces

2021 ◽  
Vol 2021 (6) ◽  
pp. 713-719
Author(s):  
A. S. Simakov ◽  
M. E. Trifonova ◽  
D. V. Gorlenkov
Keyword(s):  
Electric Arc ◽  
Electric Arc Furnaces ◽  
Current Spectrum ◽  
Arc Furnaces

Polychlorinated naphthalene (PCN) emissions from scrap processing steel plants with electric-arc furnaces

2017 ◽  
Vol 574 ◽  
pp. 1305-1312 ◽  
Author(s):  
Mustafa Odabasi ◽  
Yetkin Dumanoglu ◽  
Melik Kara ◽  
Hasan Altiok ◽  
Tolga Elbir ◽  
...  
Keyword(s):  
Electric Arc ◽  
Electric Arc Furnaces ◽  
Arc Furnaces ◽  
Polychlorinated Naphthalene

scholarly journals Early Byzantine metallurgical object at the site Gamzigrad - Romuliana in Eastern Serbia

2009 ◽  
Vol 45 (2) ◽  
pp. 197-206
Author(s):  
Maja Zivic
Keyword(s):  
Chemical Analysis ◽  
Environmental Pollution ◽  
Steel Production ◽  
Electric Arc ◽  
Technological Scheme ◽  
Detailed Characterization ◽  
Electric Arc Furnaces ◽  
Valuable Source ◽  
Arc Furnaces

The processing of waste powders from steel production in electric arc furnaces is a world problem. The presence of Fe, Zn, Cd, Pb, etc. in the powders makes them a valuable source for these metals. Zinc is the metal that is most often utilized, which leads to reduction of environmental pollution. The greatest problem in this connection is the presence of chlorine and fluorine in the powders, which influences the electroextraction of zinc in a significantly negative way. The presented paper shows the results from the study of the possibilities for zinc leaching from powders obtained in the steel production in Bulgaria. A detailed characterization of the powders was made using chemical analysis, XRD, DTA and TGA and M?ssbauer spectroscopy. The results from the powder leaching with different solvents give the reason to recommend a technological scheme for the complete and total processing of the waste powders from steel production.

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