| 摘要 |
This method for granulation of sintering raw material includes wet pulverization of iron ore using a vertical pulverizer having a pulverization unit formed from a cylindrical vessel provided with screw blades on a vertical central shaft that is driven rotatably, a sorting unit that sorts by the action of gravity and centrifugal force, and a circulation unit that circulates the underflow that has been sorted by the sorting unit to the cylindrical vessel of the pulverization unit, and granulation after adding an iron ore slurry from this wet pulverization to all or part of a sintering raw material. By using the sintering raw material granulated by this method, high quality fine powdered iron ore of a specific brand such as Pellet Feed can be mixed in with large amounts, and even when the proportion of fine powder in the sintering raw material is increased, air permeability of the filling layer can be assured and productivity for sintered ore can be maintained inexpensively. |
