Nomenclature


6. Conclusion

140 Iron Ores and Iron Oxide Materials

in the near future.

Nomenclature

I Momentum of inertia (Kg:m2)

K Momentum transfer (J:s:m�1)

m\_ Mass flow rate Kg:m�<sup>3</sup>:s�<sup>1</sup>

Lf Latent heat of fusion J:Kg�<sup>1</sup>

Hk Enthalpy of reaction J:Kg�<sup>1</sup>

D Diffusion coefficient (m<sup>2</sup>:s�1)

kr Kinetic frequency factor (�) E Activation energy J:mol�<sup>1</sup>

m� Melting rate Kg:m�<sup>3</sup>:s�<sup>1</sup>

g Gravitational acceleration m:s�<sup>2</sup>

m Mass (kg)

F Force ð ÞJ

M Torque ð Þ N:m

p Pressure ð Þ Pa

T Temperature ð Þ K V Volume m<sup>3</sup>

h Enthalpy J:Kg�<sup>1</sup>

t Time ð Þs

In this study, a coupled discrete-continuous method known as XDEM is introduced, which is able to model different zones of a blast furnace. The governing equations for both continuous and discrete phases are solved through a coupling procedure for mass, momentum and energy equations. The multi-scale and multi-physics characteristic of the XDEM method make it suitable for the complex phenomena modelling such as blast furnace process. The proposed model was applied to different parts of the blast furnace. The results for the shaft, cohesive zone and dripping zone have been validated and compared to experimental data, which shows the reliability of the XDEM method to take into account the whole blast furnace process
