Stirring Efficiency Generated by Electromagnetic Stirring vs. Bottom Gas Stirring for a Giant Electric Arc Furnace - Numerical Simulation Results

The stirring efficiency created by electromagnetic stirring (EMS) and bottom gas stirring (BGS) in a 450-ton electrical arc furnace has been investigated by water modeling, numerical simulation, and industrial test results. The melt flow pattern, velocity distribution, stirring energy and bath temperature homogenization have been compared directly for these two stirring technologies. Results show that volume average melt velocity induced by EMS is 5 times higher than that by BGS. The pros and cons of EMS vs. BGS in terms of equipment installation and lifespan, investment and operation cost, as well as safety and reliability, will also be discussed.

Lidong Teng | ABB Metallurgy
 

Dr Hongliang Yang | ABB Metallurgy
 

Miss Monika Zielinska | ABB Corporate Technology Center
 

Mr Joel Hatfield | ABB USA