Effect of basicity on the activation energy during reduction of highly fluxed iron ore pellets

The reduction behaviour of high flux hardened iron ore pellets of basicity 2, 4, 6 and 8 (Basicity = CaO/SiO2) reduced at temperature (900?1050 ?C) were examined and reported here. The kinetic model [(1 - ?)(- 1/3) - 1]2 = kt was found to be the best fit model with the present experimental data. Activation energy was calculated based on the above model. It was found to be 31.92, 30.75, 25.97, 20.87 kJ/mol for the pellets of basicity 2, 4, 6 and 8 respectively after reduction in the bed of coal. These reduced pellets could be used for steelmaking in the Electric arc furnace (EAF)/Linz- Donawitz (LD) Converter.

Automated summary

The reduction behavior of high flux hardened iron ore pellets of different basicity levels was studied at different temperatures, with the best-fit kinetic model and activation energy calculated. It was found that pellets with higher basicity levels had lower activation energies after reduction in a coal bed, making them suitable for steelmaking in Electric arc furnace/Linz-Donawitz Converter.