EDEM Research Spotlight- Charging Behavior of Sinter Feed according to Types of Charging Chute
Altair Employee- RESEARCHER
- Kang-Min Kim
- INSTITUTE
- Inha University, Korea
- DEPARTMENT
- Materials Science and Engineering
- SUPERVISOR
- Prof. Jeong-Whan Han
- TIMELINE
- 02/2016 - 10/2016
In the iron ore sintering process, a thermal imbalance can occur in the sinter feed bed which degrades the quality of the sintered ores. In order to solve this thermal imbalance, it is necessary to control the sizes of the sintering feed charging through the chute by designing an appropriate chute shape, and to improve particle size segregation. In this study, a discrete element method (DEM) simulation was applied to the sinter feed charging process to investigate charging characteristics, such as the escape velocity of particles, size segregation intensity and porosity in the sinter feed bed, depending on the shape of the chute. A charging analysis using three types of chute found that horizontal velocity, segregation intensity and porosity in the lowest position in the bed were the highest when a curved chute was used. Therefore, it seems that a curved chute would be effective for solving the thermal imbalance caused by segregation charging. However, in order to use a curved chute, it is necessary to find a way to maintain uniform permeability in the sinter feed bed. SPONSOR - POSCO PUBLICATIONS - Korean J. Met. Mater., Vol. 55, No. 12 (2017), pp.896~904
Fig. 1. Charging behavior of sinter feed as a function of time: (a) 5s, (b) 15s, (c) 25s, (d) 35s, (e) 45s
Fig. 2. Particle distribution at 55s after charging with different total bed height: (a) 300mm, (b) 400mm, (c) 500mm, (d) 600mm
EDEM was able to control particle size ratio and frictional force. Particularly, in the case of rolling friction coefficient, it was a great help function for realizing the stickiness of raw materials for sinter. In addition, the particle removal rate and direction could be predicted by controlling the loading speed of the particles.
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