Using the previously described method for appearance function determination, described in Part 1 of this article, the breakage characterization of the main Carajás ore types was carried out. Based on such characteristics, the ball mill circuit performance was evaluated through simulations. The model described in the fi rst part was used. The results were assessed by comparing ball mill products and cyclone overfl ow size distribution, as well as simulated recirculating loads. The simulations indicated the potential for processing such ore types at the Carajas grinding circuit, which until now was unknown.
Grinding; modeling; iron ore
