The Chapter describes possible substitutes for coke and methods of its use in blast furnace production and, in particular, in small blast furnaces. It is shown that for MBFs it is most effective to use in significant quantities such coke’s substitutes as biomass of various origins, plastic waste, briquettes from coke breeze and dust, as well as ore-carbon briquettes. Blast furnace can be an effective unit for recycling plastic waste, including the most dangerous ones, as coke substitute. The substitutes mentioned can be used both in the form of a charge with iron ore part or with coke, and blown through tuyeres. Also for MBF, an option is offered to divide coke and its substitutes for two parts: one part is of the highest possible quality for forming coke packing, the second is low-quality coke and its substitutes to ensure the recovery of the charge and combustion on tuyeres.