Magnetic collection of grinding ball fragments from SAG and ball mill circuits

摘要

Grindign ball fragments discharging from SAG mills and ball mills causes extreme wear to downstream processing equipment. These ball fragments, recirculating in a milling circuit, will cause excessive wear to sumps, pumps, hydrocyclones, and interconnecting piping. A magnetic separation system to remove grinding ball fragments from the mill discharge has been developed and successfully applied in the milling circuit. This magnetic separation system - termed Trommel Magnet - was first applied at the Escondida copper concentrator in Chile.