On the need to classify rock mass fed to dry magnetic separation

The hypothesis of a possible use dry magnetic separation is substantiated on the example ores from ferruginous quartzite deposits operated by plants PAO “Severstal” Holding. Size class ore after medium crushing –80+0 mm when vibrating feeder used for feeding mass to zone. rationale based analysis video recording physical simulation laboratory drum separator SMBS-L series, in VSDC Video Editor, and modelling its virtual prototype Rocky DEM software package. It has been proved that material working area makes it to: form monolayer surface chute with thickness close maximum size lump separated ore; implement batch feed zone; increase spacing between lumps zone passing through free fall area, thereby allowing quartzites without pre-preparation.