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.what is ore used for,What is Ore? - Definition, Types, Uses & Examples - Video & Lesson .Learn about ores, which are a special type of rock from which we can economically extract valuable elements and minerals. Ores are the source for.