8th International Congress on Science and Technology of Ironmaking - ICSTI 2018

Thick bed technique has been widely used in the sintering plants , because it can save fuel consumption and achieve significant economic benefits. However, when the sintering bed height further increases, the cross-section shape would vary with respect to the nclination angle, and directly affect heat transfer inside sintering bed afterwards. After a two-dimensions(2D) mathematical model is established and validated against the sintering pot test measurements, present work designs four inclination angles, namely 9 °, 18 °, 26.6 °, and 33.7°, in order to investigate the effects of cross-section shapes on heat transfer during the sintering process. The results show that the trapezoid-liked shape of sintering bed cross-section leads to the non-uniform temperature distribution in the width direction, where the temperature close wall is higher than that in the center. Although the increases on the inclination angles from 9 ° to 33.7° gradually decreases the sinter bed height with the same yield, the temperature difference between wall and center regions increases from 116 K to as great as 292 K. Key words: sintering; cross-section shape; inclination angle; heat transfer; CFD