Abstract
In order to improve productivity and yield in iron ore sintering, the following factors of practical use has been investigated by pot test or plant test, and the effects on sintercake structure has been analyzed with a high-power X-ray CT scanner. High alumina content (4%Al2O3) prevents the coalescence of pores in sintercake, and hence impairs yieldand productivity. Magnetic levitation prevents shrinkage of sintercake, and improves productivity. Intensifying segregation decreases weekly-unsintered domain and excessively sintered domain, and enhances yield and productivity. These results suggest that the factors affecting sintercake structure are classified into at least 3 types: pore-diameter-control, porosity-control, homogeneity-control. In conclusion, an expected sintercake structure offering high productivity and high yield consists of appropriate volume of well-ripen pores.
