Enhancement of Efficiency in Crude Iron Production Using an Increased Amount of Pellet Feed

In order to use pellet feed, particularly iron ore with size distributions from 10 to 100 µm, in fluidized bed reactors, different binding systems for an agglomeration are evaluated. The micro agglomerates differ from each other in chemical compositions, contents, and thermal treatments. Crucial indicators for an application in a fluidized bed are reducibility as well as compressive strength. In pressure thermo gravimetric analyzer tests, micro agglomerates with lime hydrate and acid binder show the best reduction behavior, whereas micro agglomerates with inorganic binding systems reached the highest compressive strength before and after a three-step reduction process.