Reduction behaviour of fired iron ore pellets

Abstract

The present project work on- “Reduction Behaviour of Fired Iron Ore Pellets” was undertaken with a vision to promote the effective utilization of iron ore and coal fines in sponge iron making. Presently, India has become the world leader in sponge iron production and the production of steel by DR-EAF route is increasing day by day. In the present project work, the effect of addition of concentrated Sucrose binder on the physical properties of fired iron ore pellets was investigated. The crushing strength was found to be maximum at 2% binder addition, followed by a decrease with further increase in binder concentration. A reverse trend was observed in the case of porosity, i.e. porosity of fired pellets increased with rise in binder concentration from 1% to 8%. The pellets fired at 1100 C were treated for reduction studies in different types of coal. The degree of reduction of fired iron-ore pellets increased with increase in reduction temp and time up to the range studied. The degree of reduction of fired pellets was found to be increasing with increase in the reactivity of the coal.