Optical Emission Spectrometry of the Arcs During Melting in the EAF

Nov 17, 2023

We’re delighted to share insights from one of our shared studies with Outokumpu on optimizing Electric Arc Furnace (EAF) processes. The research dives into the impact of scrap quality on performance fluctuations and challenges faced by traditional static controls.
“Optical Emission Spectrometry of the Arcs During Melting in the EAF”
Key Points:
Dynamic Control: Conventional EAF controls often rely on static programs, leading to inefficiencies in scrap melting. The study advocates for dynamic control systems, with a spotlight on optical emission spectrometry (OES) for precise monitoring of scrab melting.
OES Advantages: Measuring optical emissions during scrap melting, offers real-time insights without the delays seen in conventional methods. It responds faster to changing conditions, reducing heat loss and refractory wear.
Benefits: Combining OES with conventional measurements enhances EAF control, allowing for a more precise analysis of scrap melting. Improved energy efficiency, faster melting times, and better tapping temperature control.
Results & Experiences: The study highlights successful applications of OES in EAF control, with examples from Outokumpu Stainless Tornio Works. Dynamic arc voltage control using OES has led to higher arc voltages without excessive furnace wear, optimizing production capacity.
Future Perspectives: OES’s integration in EAF control promises to enhance productivity, energy efficiency, and refractory performance.
REF: https://www.luxmet.fi/research-and-publications/