What is iron ore sinter and how is it made?

Iron ore sinter is a granular material produced from the agglomeration of iron ore fines, along with fluxes and coke, which is used as a feedstock in blast furnaces for steelmaking. The production process involves mixing iron ore fines with additives such as limestone and coke, followed by heating in a sintering machine at temperatures around 1,200 to 1,400 degrees Celsius. This heating process causes the fine particles to fuse together into larger, porous agglomerates, which improves their handling and reduces waste during steel production. Sintering not only enhances the physical properties of the ore but also helps in the efficient use of raw materials in the steelmaking process.