(1) Electric furnace uses electricity, the cleanest energy source. Other energy sources such as coal, coke, crude oil, natural gas, etc. will inevitably bring the accompanying impurity elements into the metallurgical process. Only electric furnaces can produce the cleanest alloys.
(2) Electricity is the only energy source that can obtain arbitrarily high temperature conditions.
(3) Electric furnace can easily realize the thermodynamic conditions such as oxygen partial pressure and nitrogen partial pressure required by various metallurgical reactions such as reduction, refining and nitriding.