Trunnion magnet separator

Eriez Magnetics’ trunnion magnet separator effectively removes up to 98% of the grinding media steel balls and ferrous chips from milled ore in SAG/ball mill operations. By eliminating these potentially destructive pieces, harm to downstream equipment is significantly reduced.

As ore is discharged, it is mixed with residual and broken steel balls that are harder than the ore and can cause extensive and costly damage to the pumps and cyclones downstream.

Positioned at the downstream end of the mill, a trunnion magnet consists of an arc of permanent magnets surrounding almost half of a blind trunnion extension. As the trunnion rotates, the powerful magnetic circuit aggressively attracts and holds the steel balls to the inner surface of the trunnion. The steel balls are carried to the top of the trunnion where the magnetic arc terminates, thereby releasing the balls, which subsequently fall into a hopper and chute.

The trunnion magnet is available in several design variations to accommodate specific mill configurations. For more information call 800-565-9588 or 905-795-0444 or visit www.eriez.com.