الوصف

Iron Ore Pellets are formed from beneficiated or run of mine iron fines.  The iron is usually ground to a very fine level and mixed with limestone or dolomite as a fluxing agent and bentonite or organic binders as a binding agent.  If the ore is a Hematite ore, coke or anthracite coal can be added to the mix to work as an internal fuel to help fire the pellets. This mixture is blended together in a mixer and fed to balling discs or drums to produce green pellets of size typically about ***6mm.  The green pellets are then fed to the induration machine.  Both straight grates and grate kilns dry the pellets out in a drying section, then bring the pellets up to a temperature of about ******0 °C in a preheat zone, then finish the induration process at roughly ********0 °C.  The pellets are then cooled to a suitable temperature for transporting to a load out facility. Both processes recycle the heat from the pellet back through the process to aid in energy efficiency and decrease fuel usage.