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There are two types of iron resources such as primary iron ore and iron sand. In general, primary iron ores use as raw materials in iron and steel making and can reduce directly. In Direct reduction process, Fe2O3 (hematite) is converted to metallic iron by the removal of oxygen. This work presents a kinetics study for direct reduction process of iron ore pellet. An investigation has been carried out of different reduction parameter such as differens sizes cylindrical geometry over temperatures ranging from 700oC to 1100oC for reaction time from 10 minutes to 1 hour. A number of different gas-solid reaction models was used to evaluate the reduction mechanism. The result was indicated that the initial reaction stage is chemically controlled which gradually transitions to diffusion controlled. The Arrhenius plot was used to determine the activation energy and pre-exponential factor for the corresponding reactions, compared with available data in the literature