The working principle of EAF
EAF steelmaking uses electric energy as
the main heat source and uses three-phase alternating current or direct
current. An electric arc is directly generated between the charge and
the electrode, and the charge is melted at a high temperature by the
electric arc, and then oxidizer, slag-forming agent, ferroalloy, etc.
are added to remove inclusions. The chemical composition and temperature
of the molten steel are adjusted to the specified values and then
injected into the ladle. Since the 1980s, EAF have developed in the
direction of large-scale, ultra-high power, direct current, continuity
and automation, and the world's EAF steelmaking production technology
has developed more rapidly.