The term BLAST FURNACE FUEL refers to the fuel used in a blast furnace, which is typically a type of furnace used for smelting and producing iron from ore. The most common fuel used in a blast furnace is COKE, which is a solid carbonaceous material derived from destructive distillation of low-ash, low-sulfur bituminous coal. COKE is composed mainly of carbon and has a high calorific value, making it an ideal fuel for a blast furnace.