A Holistic Approach to Sustainable Steelmaking: Innovative Methods for Achieving Ultralow Carbon, Low Nitrogen and Low Sulfur With Modern Secondary Metallurgy

The transition to green steel production presents significant challenges, particularly in low nitrogen, low sulfur and ultralow carbon (ULC) steelmaking. The role of RH degassers in addressing these challenges is explained with a focus on reducing nitrogen and sulfur. The use of raw materials already present in the EAF and alternative approaches in secondary metallurgy are examined. Recent experiences from the start-up of a modern 200-ton RH degasser are highlighted, showcasing the benefits of full process automation and advanced metallurgical models. These innovations have demonstrated significant achievements in low nitrogen and carbon levels, essential for producing high-quality ULC steel.

Authors:

Alexander Weigl | INTECO melting and casting technologies GmbH
 

Christoph Lex | INTECO melting and casting technologies GmbH
 

Christian Buchmaier | INTECO melting and casting technologies GmbH
 

Christian Redl | INTECO melting and casting technologies GmbH
 

Session Chairs:

Bryan Webler | Carnegie Mellon University