Overview
ABB’s LF‑EMS provides strong, controlled electromagnetic stirring across the full melt volume to enhance temperature and chemical homogenization, accelerate alloy dissolution and improve steel cleanliness. Compared to gas stirring alone, LF‑EMS reduces re‑oxidation and nitrogen pickup, stabilizes the slag layer and improves process repeatability. With over 140 installations worldwide, it is a proven and trusted solution for consistent, efficient ladle furnace operation.
Typical benefits
Cleaner steel with faster inclusion removal
<p>Whole‑bath circulation accelerates inclusion flotation and reduces total oxygen for higher steel cleanliness.</p>Faster, more uniform temperature and chemical homogenization
<p>Strong, evenly distributed circulation eliminates stagnant zones and provides tight control of melt conditions.</p>Reduced re oxidation, nitrogen pickup and carbon pickup
<p>Stable slag conditions limit exposure to air and decrease oxygen, nitrogen and hydrogen pickup during reheating.</p>Improved alloy dissolution efficiency
<p>High‑energy stirring accelerates melting and mixing of alloys, improving consistency and reducing processing time.</p>Lower operating costs and improved process stability
<p>LF‑EMS reduces alloy, gas and energy consumption while enhancing repeatability and control.</p>Safer, simpler furnace operation
<p>Non‑contact technology eliminates porous‑plug risks, minimizes splashing and supports easier de‑slagging.</p>FEATURES
A travelling magnetic field induces melt flow through a non‑magnetic window with no mechanical contact.
Stirring power and direction can be precisely adjusted, ensuring controlled flow across all ladle furnace steps.
LF‑EMS solutions are available for ladles from small sizes up to approximately 330‑ton capacities.
Available on retractable trolley, ladle transfer car or retractable arm depending on plant layout and access.
Only an austenitic stainless‑steel window is required; design avoids interference with the ladle car.
Includes stirrer, converter, transformer and cooling system engineered for long‑term reliability.
Delivers stable stirring during alloying, wire feeding, heating and other critical LF stages.
LF‑EMS can operate alone or be combined with controlled gas stirring when hybrid performance is required.
Hollow copper conductors, dry insulation and internal water cooling provide long service life and durability.
ABB Metallurgy provides global service, commissioning, optimization and specialist metallurgical know‑how.