2006 Volume 92 Issue 12 Pages 728-734
The newly developed brand Marra Mamba ore from Australia has a comparatively high water absorptivity, and since a large amount of fine ore is contained, if it is used as a raw material of sintered ore, it will cause the deterioration of the permeability of the ore bed, and the productivity fall of a sintered ore by the fall of the granulability. By blending nuclei particles with this Marra Mamba ore, the granulability and the permeability of the ore bed have improved sharply by processing them in a high-speed agitating mixer. It was considered that the ratio about 25 mass% was suitable for nuclei particle mixture ratio to a high-speed agitated material.
Moreover, the granulability was improved by using the ore of 1-3 mm particles as nuclei. As for this, it is considered that the granulation of a middle size ore is accelerated, because of the consistency of the particle size composition of the material and proprrties of high-speed agitating mixer.