A STRUCTURAL MODEL FOR THE RUSTING OF REDUCED ILMENITE
Abstract
In the new commercially followed process for the production of synthetic rutile, metallic iron present in the reduced ilmenite is oxidized to solid iron oxide using NH4Cl as catalyst. There is necessity for improving the oxidation process, which is very slow in presence of NH4Cl. Attempts were hence made to study the effects of various organic compounds with a view to accelerate the reaction. It was observed that certain organic compounds like methanol and acetone in combination with formic acid when used along with NH4Cl had very positive influence on the reaction. The influence of various experimental parameters on the oxidation reaction was investigated. Kinetics of the reaction was studied and the modelling of the reaction was carried out. It was observed that the reaction was chemically as well as diffusion controlled.
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