A method for introducing carbon into direct reduced iron (DRI), wherein at least one solid carbon carrier is added to the DRI, and the DRI is hardened once the solid carbon carrier has been added to the DRI.

In various examples, the subject matter of this disclosure relates to a method and a system for producing metallic iron. An example method includes: obtaining bio-oil; obtaining iron ore fines; providing the bio-oil to a gasifier to produce syngas from the bio-oil, the syngas including tar and/or particulate; and providing the syngas and the iron ore fines to a fluidized bed reactor where iron oxide in the iron ore fines is at least partially reduced using the syngas.

Method for producing direct reduced metal material, comprising the steps: a) charging metal material (142) to be reduced into a furnace space (120); b) providing heat and a reducing gas into the furnace space (120), so that heated reducing gas heats the charged metal material (142) to a temperature high enough so that metal oxides present in the charged metal material (142) are reduced, in turn causing water vapour to be formed; and c) condensing and collecting the water vapour formed in step c in a condenser (280); The method is characterised in that, in step a), the metal material (142) is charged onto a gas-permeable floor (151), in that the reducing gas is circulated in a closed loop upwards through said floor (151), through the charged metal material (142), and further via said condenser (280) and a gas forced circulation device (250), and in that the method further comprises the step d) supplying additional reducing gas to achieve and/or maintain a predetermined pressure in said furnace space (120). The invention also relates to a system.