What are the main uses of iron ore? | ReferenceIron ore is used primarily in the production of iron. Iron is used in the manufacturing of steel. Steel is the most used metal in the world by tonnage and purpose.how do we use iron ore,What Are the Different Uses of Iron Ore? (with pictures) - wiseGEEKOne of the most important uses of iron ore is steel production, accounting for the bulk of iron ore processed annually. Iron-rich ores have a number of other uses,.