What is Pig Iron?
Pig iron is a raw material used in electric arc (EAF) steel making and cast iron products.
In EAFs pig iron is produced by smelting iron ore with a high carbon fuel and a flux. Due to the high carbon levels in the pig iron, it is very rarely used on its own. It is most commonly mixed with scrap steel, diluting the impurities, to rebirth a new steel product.
Foundries use pig iron to produce premium grades of ductile iron - this is created when the pig rion is remelted with steel and iron scrap to remove all undesirables.
The traditional shape of the molds used for casting pig iron ingots had many ingots branched off of one long channel, similar to that of piglets suckling off a sow which is where the name 'pig' iron was derived.