Used primarily as a fuel and reducing agent in blast furnaces for iron ore smelting, furnace coke provides the high temperatures and carbon source needed to convert iron ore into molten iron. Its porous structure and high carbon content allow for efficient combustion and gas permeability, which are essential for continuous and stable furnace operation. It is also used in foundry cupolas for melting scrap iron and steel, and in some cases as a raw material for producing calcium carbide and carbon electrodes. Due to its strength and low impurity levels, it supports efficient, large-scale metal production in the steel industry.