Part Ⅰ Research Background
1 COREX Ironmaking Process
1．1 Brief Introduction about Different lronmaking Processes
1．1．1 Blast Furnace
1．1．2 Direct-reduced Ironmaking
1．1．3 Smelting Reduction Ironmaking
1．2 Brief Introduction about COREX Process
1．3 COREX Process in China Refe rences
Part Ⅱ Physical and Mathematical Simulation of COREX Shaft Furnace
2 Physical Simulation of Solid Flow in COREX Shaft Furnace
2．1 Physical Modelling
2．1．1 Apparatus
2．1．2 Experimental Conditions
2．2 Results and Discussion
2．2．1 Characteristics of Solid Flow
2．2．2 Effect of Variables on Solid Flow
2．2．3 Effect of AGD Beams on Solid Flow
2．3 Summary
References
3 Mathematical Simulation of Solid Flow in COREX Shaft
Furnace
3．1 DEM Model
3．2 Model Validity
3．3 Solid Flow Including Asymmetric Phenomena in Traditional SF
3．3．1 Simulation Conditions
3．3．2 Basic Solid Flow
3．3．3 Effect of Discharging Rate
3．3．4 Asymmetric Behavior of Solid Motion
3．4 Summary
References
4 Effect of Discharging Screw on Solid Flow in COREX Shaft Furnace
4．1 Influence of Screw Design
4．1．1 Simulation Conditions
4．1．2 Solid Flow in Base Case
4．1．3 Effect of Screw Diameter
4．1．4 The Optimized Case
4．2 Influence of Uneven Working of Screws
4．2．1 Simulation Conditions
4．2．2 Effect of Adjacent Inactive Discharging
4．2．3 Effect of Separated Non-working Screws
4．2．4 Effect of Discharge Rate
4．3 Summary
References
5 Gas-solid Flow in a Large-scale COREX Shaft Furnace with
Center Gas Supply Device Through CFD-DEM Model
5．1 CFD-DEM Model
5．2 Model Validity
5．3 Influence of CGD on Gas-solid Flow
5．3．1 Simulation Conditions
5．3．2 Part．icle Velocity and Segregation
5．3．3 Voidage and Gas Distribution
5．3．4 RTD of Gas and Solid Phases
5．4 Influence of Burden Profile on Gas-solid Flow
5．4．1 Simulation Conditions
5．4．2 Burden Descending Velocity and Particle Segregation
……
Part Ⅲ Physical and Mathematical Simulation of COREX Melter Gasifier
Part Ⅳ Simulation of Fine Particles Behavior in COREX