| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.38 ( April 1998 ) Ironmaking Technology and Tubular Products Technology ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Analysis of Sintering Behavior for Improved
Sintering Performance in High Pisolitic Ore
Operation Kouichi Nushiro, Nobuyuki Ohyama, Katsutoshi Igawa |
| Synopsis: To improve sintering performance when using a high proportion of pisolitic ore, the flow behavior of the melt and moisture condensation during sintering were investigated. Melt fluidity decreased at higher pisolitic ore ratios, suppressing pore formation and agglomeration. However, an addition of mill scale improved melt fluidity, accelerating the agglomeration of the sinter cake and improving sinter yield. Bed permeability also deteriorated at higher pisolitic ore ratios due to increased moisture condensation, which decreases the void fraction in the sintering bed, but it was possible to reduce the total pressure drop and improve bed permeability by creating vertical slits. The gas flow rate in the slits was calculated at 1.8 times that in a conventional bed. Moisture condensation is reduced by this increased gas flow rate. |
| TextiPDF: 7p./333kbj |