Iron Ore: Quality and Logistics from Mine to Steelworks
Executive summary
Iron ore is not a uniform input that moves directly from mine to furnace. Particle size, iron content, gangue, and mineral form determine whether ore is beneficiated, sintered, pelletized, or charged as lump ore. Blast-furnace ironmaking and direct reduction are distinct routes. Railways, ports, and shipping connect mine output to steelworks and are part of the supply chain.
BACI 2024 exports were about $159.7 billion, with exporter HHI around 3,435. Australia accounted for approximately 54.8% and Brazil 19.6%. These figures describe recorded exports, not mine capacity or company market shares.
Process and network interpretation
The source review revised a direct ore-to-pig-iron path into an intermediate ore-preparation and ironmaking process. Fines may require sintering or pelletizing before entering a blast furnace; lump ore can sometimes be charged directly, depending on its properties. Coke joins the blast-furnace route. Direct reduction is separate: suitable pellets or lump ore react with reducing gas to produce direct-reduced iron (DRI) or hot-briquetted iron (HBI), which can feed electric-furnace steelmaking.
Iron scrap is a secondary iron source for steelmaking, not recycled iron ore. The reviewed evidence does not quantify how much scrap or DRI displaces iron-ore demand by region. Industrial trials for direct reduction do not establish commercial-scale demand or economics.
Constraints and evidence gaps
Supply analysis should separate ore quantity, grade and impurity profile, beneficiation and pelletizing capacity, and the transport corridor from mine to port and steelworks. The reviewed sources include mine and processing examples in the United States, Australia, Brazil, South Africa, and Canada, but not a global mine-by-mine material balance. They also cover testing for iron and moisture and precautions against liquefaction of iron-ore fines during shipping, while contract-specific tolerances and price adjustments remain unavailable.