Mehran University Research Journal Of Engineering &
Technology (HEC Recognized In Category "X")
Publishing Since 1982.



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Work Index and Grinding Energy Assessment of Dilband Iron Ore, Pakistan

Keywords: Work index, Grinding Energy, Rod Mill, Ball Mill, Dilband Iron Ore.

Mehran University Research Journal of Engineering & Technology

Volume 30 ,  Issue 1

Muhammad  Ishaque  Abro,Abdul  Ghani  Pathan,Abdul  Hakeem  Mallah

Abstract

Importance of comminution in mineral processing sector is highly acknowledged from energy perspective. In present study an attempt was made to understand the comminuting behavior of Dilband iron ore and to compute the grinding energy requirement for production of ultrafine particles up to mesh of liberation. In this regard standard grindability tests developed by the Chair of Mineral Processing Leoben Austria was used for calculating work index of Dilband iron ore. The grinding tests were conducted in rod and ball mills. The work index value of two feed size fractions with 80% passing at 3800?m and 5200?m was noted to be 11.85 kwh/t and 9.3 kwh/ton respectively. Ball mill grinding test indicates that dry grinding in open circuit is not efficient and consumes more energy of 88.48kwh/t of ore for grinding 1000/40?m to 80% <40?m size.