Grinding of Agrium Phosphate Ores in a 3'' Diameter Pilot ...
and a 13 ft. diameter by 21 ft. long, 2,000 HP ball mill. The SAG mill was equipped with ¾" slotted grates and a 5/8" trommel screen. This allowed coarse material to pass through the screen to the ball mill circuit and also resulted in a significant tonnage of scats being rejected to the floor.