Effect of molasses binder on the physical and mechanical properties of iron ore pellets

Abstract

Molasses was used as an alternative binder to the bentonite binder. The change in moisture absorption by pellets prepared with different iron ores and different molasses contents were investigated. Iron ore properties exerted the major effect on pellet behavior and final pellet quality. The absorbed moisture content of pellets prepared without binder, bentonite-added pellets, and molasses-added pellets were in the range of 7.72%–9.95%, 9.62%–10.84%, and 6.14%−6.69%, respectively. The wet pellet compressive strength of molasses-added pellets (43–230 N/pellet) was superior to that of bentonite-added pellets (9.47–11.92 N/pellet). The compressive strength of dried molasses-modified pellets increased to 222–394 N/pellet, which is currently the highest value achieved for dried pellets.

Keywords

iron ore / molasses binder / moisture absorption / pellet strength / physical and mechanical properties

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