Effect of Core Diameter on the Compressive Strength and Porosity of Itakpe Iron Ore Pellets
The effect of core diameter on the compressive strength and porosity of Itakpe iron ore pellets has been studied. The holes at the centre of the pellets were introduced using balls of combustible materials (palm kernel husk, rice husk and sugar cane husk) of various sizes (2, 3, 4, 5 and 6 mm). The produced green pellets were dried and fired, chemical composition, physical and mechanical properties were determined using standard methods. The results showed that the chemical composition of the pellets produced is acceptable and can be used commercially and the palm kernel husk has the best compressive strength with 7.16 KN/mm2 while the porosities were in the range of 25–31%. The result also showed that good porosity and maximum compressive strength were achieved with hollow pellets formed with combustible materials of diameter 4 mm for all the samples.
KeywordsIron ore Core diameter Compressive strength
The lead author gratefully acknowledges the financial support from Nigeria Tertiary Education Trust Fund (TETFund). The authors also wish to thank all academic and technical staff that made input in this work.
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