Mobile Double Roll Crusher for Dust-Free Sand

The Mobile Roll Crusher produces dust-free, cubical fine product / sand by compression and shear between two counter-rotating rolls. It accepts 0-50 mm feed, delivers 0-10 mm product and works at 50-350 t/h. It is ideal for brittle, soft-to-medium materials such as coal, lime, potash and glass.

Working principle

Material caught by the nip angle between two rolls is broken by compression/shear, giving tight top-size control and minimum fines/dust. The rolls are manganese-alloy wear-resistant cast steel; smooth or toothed by feed size (two smooth for fine, one smooth-one toothed for medium, two toothed for coarse). Hydro-pneumatic protection against tramp iron and easy gap adjustment are standard.

Technical specifications

Hubs are cast iron locked with a taper sleeve; flywheel/roll shafts are C45; heavy-duty roller bearings with labyrinth seals.

Material and application

Coal, coke, glass, fertiliser, potash, salt, lime, limestone, soft ores and industrial minerals — especially where dust is unwanted. It also handles wet/sticky feed (a roll-crusher advantage). It is not suitable for very abrasive hard rock, where a jaw/cone is preferred. Typical double-roll reduction ~4:1; fines drop 15-20%; low energy (~0.8-1.2 kWh/t order).

Machines to complete the plant

For a full plant see Mobile Crushing Plants and the fixed Crushers pages, and the relevant industrial-mineral/coal application pages. Request a quote.