Details | KMPC Hemmat

CONVERTING AG TO SAG MILLS: THE GOL-E-GOHAR IRON ORE COMPANY CASE
By M. Maleki-Moghaddam, M. Yahyaei, S. Banisi
Published in Fifth International Conference on Outogenous and Semi Outogenous Grinding Technology (SAG2011), September 2011, Vancover, Canada at 2011
Direct link: http://kmpchemmat.ir/pii/42006

Abstract
At the concentration plant of the Gol-E-Gohar Iron Ore Company (Iran) three 9 m x 2.05 m AG mills (fixed speed) are used in parallel in a dry operation. The performance of AG mills has been lower than the target value indicated by an increase in the product size (P80) from 450 µm (target) to 515 µm and low power draw (50% of nominal). By simulation, it was found that increasing the liner lifter face angle from 7 to 30° while keeping the original lifter height (i.e., 22.5 cm) could provide an appropriate charge trajectory. When the proposed liners were installed in one of the AG mills, the throughput increased by 27%; when 5% (v/v) balls were added, the throughput increased by 40%. The product size also decreased from 515 to 501 µm.

	Login About
		KMPC Hemmat A Mineral Processing Digital Library
	All Years to Access Full-Text Export citations CONVERTING AG TO SAG MILLS: THE GOL-E-GOHAR IRON ORE COMPANY CASE By M. Maleki-Moghaddam, M. Yahyaei, S. Banisi Published in Fifth International Conference on Outogenous and Semi Outogenous Grinding Technology (SAG2011), September 2011, Vancover, Canada at 2011 Direct link: http://kmpchemmat.ir/pii/42006 Abstract At the concentration plant of the Gol-E-Gohar Iron Ore Company (Iran) three 9 m x 2.05 m AG mills (fixed speed) are used in parallel in a dry operation. The performance of AG mills has been lower than the target value indicated by an increase in the product size (P80) from 450 µm (target) to 515 µm and low power draw (50% of nominal). By simulation, it was found that increasing the liner lifter face angle from 7 to 30° while keeping the original lifter height (i.e., 22.5 cm) could provide an appropriate charge trajectory. When the proposed liners were installed in one of the AG mills, the throughput increased by 27%; when 5% (v/v) balls were added, the throughput increased by 40%. The product size also decreased from 515 to 501 µm.