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In this study, reduction of in-flight fine particles of magnetite ore concentrate by methane at a constant heat flux has been investigated both experimentally and numerically. A 3D turbulent mathematical model was developed to simulate the dynamic motion of these particles in a methane content reactor and experiments were conducted to evaluate the model. The kinetics of the reaction were obtained using an optimizing method as:  [-Ln(1-X)] 1/2.91  = 1.02 × 10 −2 d P  −2.07 C CH4  0.16 exp(−1.78 × 10 5 /RT)t . The model predictions were compared with the experimental data and the data had an excellent agreement.

CH 4 Direct Reduction of In-Flight Fe 3 O 4 Concentrate Particles