scholarly journals Analysis of Energy Balance for a Steel Electric Arc Furnace

2020 ◽  
Vol 16 ◽  
Keyword(s):  
Energy Efficiency ◽  
Energy Balance ◽  
Heat Recovery ◽  
Process Analysis ◽  
Cooling Water ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Exhaust Gas ◽  
Actual Process ◽  
Arc Furnace

A process and energy analysis was performed for an Electric Arc Furnace for steel production in order to determine the energy efficiency defined as losses contribution in the total energy input. Process analysis was performed during operation for one batch, measuring the relevant process parameters. Energy balance revealed that a significant potential for improvement exists, the main directions being reducing the cooling water loss (for example, by implementing a heat recovery system), reducing the loss during loading and adjustment by implementing technology changes and automation and reducing the loss through exhaust gas. Although implementation of heat recovery systems on the cooling water circuit and exhaust gas duct will not influence the actual process energy efficiency, it is expected to improve the overall energy expenditure by integrating other heat consuming equipment.

Process Analysis of the Electric Arc Furnace Melting for Alumina Spinel Production

2012 ◽  
Vol 602-604 ◽  
pp. 2104-2107
Author(s):  
Guo Chao Qi ◽  
Feng Jun Shan ◽  
Qiang Li ◽  
Jing Yuan Yu
Keyword(s):  
Electric Power ◽  
Power Efficiency ◽  
Process Analysis ◽  
Electric Energy ◽  
Power Input ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
High Quality ◽  
Furnace Melting

Alumina spinel is widely used as a refractory material in metallurgy industries. Arc furnace melting method is suitable to produce high quality alumina spinel. However, the high melting temperature (> 2200 °C) and high electric energy consumption limit the application of this method. There exists huge opportunity for energy saving through process optimization. A newly designed 2400 kVA electric arc furnace is used as melting facility to produce alumina spinal in this study. It shows from the experiments and analysis that melting voltage has much effect on electric power input and electric efficiency. At voltages higher than 150V, stable electric power input and adequate efficiency can be maintained. Stable melting voltage is difficult to maintain at 100-150V range and power efficiency are also apparently lower. For voltage less than100V, the process is very difficult to control and energy efficiency are very poor. Too high voltage on the other hand can lead the electric arc expose directly to the surroundings and increase the energy loss. In practical melting process, controlling the melting voltage at 140-160V range is suitable for high quality alumina spinel production.

scholarly journals ENERGY EFFICIENT WATER-COOLED ELEMENTS FOR FOUNDRY CLASS ELECTRIC ARC STEELMAKING FURNACES

2021 ◽  
pp. 55-58
Author(s):  
S. Timoshenko ◽  
E. Nemtsev ◽  
M. Gubinski
Keyword(s):  
Energy Efficiency ◽  
Energy Efficient ◽  
Melting Process ◽  
Electric Arc Furnace ◽  
General Purpose ◽  
Electric Arc ◽  
Oxidation Potential ◽  
Low Energy ◽  
Specific Power ◽  
Arc Furnace

Possibility of a wide choice of original charge and variation of oxidation potential in melting process makes the electric arc furnace (EAF) a general-purpose unit in foundries. Energy-intensive classical technology with insufficient specific power of the transformer, irregular operation with forced downtime predetermine a low energy efficiency of foundry class furnaces [1,2]. Flat and shallow bath of the EAF enhances the problem.

scholarly journals Case Study of an Organic Rankine Cycle (ORC) for Waste Heat Recovery from an Electric Arc Furnace (EAF)

Energies ◽  
2017 ◽  
Vol 10 (5) ◽  
pp. 649 ◽  
Author(s):  
Steven Lecompte ◽  
Oyeniyi Oyewunmi ◽  
Christos Markides ◽  
Marija Lazova ◽  
Alihan Kaya ◽  
...  
Keyword(s):  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace

Electric Arc Furnace Off-Gas Heat Recovery and Experience with a Testing Plant

2013 ◽  
Vol 85 (4) ◽  
pp. 519-526 ◽  
Author(s):  
Thomas Steinparzer ◽  
Markus Haider ◽  
Florian Zauner ◽  
Gerhard Enickl ◽  
Marcel Michele-Naussed ◽  
...  
Keyword(s):  
Heat Recovery ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace

Effect of oxyfuel burner ratio changes on energy efficiency in electric arc furnace at Co-Steel Lasco

2001 ◽  
Vol 28 (3) ◽  
pp. 266-272 ◽  
Author(s):  
M.J. Thomson ◽  
N.G. Kournetas ◽  
E. Evenson ◽  
I.D. Sommerville ◽  
A. McLean ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace
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