This coal is added to the ladle, along with scrap and other components.
Its function is to provide heat energy and consume excess oxygen during the period in which the iron is heating up and melting, which minimizes the loss of fluxes.
Materials used / advantages:
Anthracite / Competitive price and low sulfur
Metallurgical coke /Competitive price and low sulfur
Calcined petroleum coke / high carbon, low sulfur