Crude iron cast in oblong blocks, or “pigs.” Pig iron is produced in a blast furnace by heating iron ore and coke with a limestone flux. Pig iron is high in carbon and impurities and must be refined to produce steel, wrought iron or ingot iron.
Crude iron cast in oblong blocks, or “pigs.” Pig iron is produced in a blast furnace by heating iron ore and coke with a limestone flux. Pig iron is high in carbon and impurities and must be refined to produce steel, wrought iron or ingot iron.