Used Crushers and Crushing Equipment - Federal EquipmentLooking for reliable used crushers and crushing equipment? Visit Federal Equipment to purchase manufacturing equipment directly.marcasite used crushers,marcasite used crushers,Basics in Minerals Processing - Instead the cone crusher is used more frequently. Also in comminution (crushing and grinding) circuits for ore and minerals the cone crusher is frequently used as the secondary stage, see 3:4. Using a secondary HSI means as always a restriction in feed hardness and abrasiveness. HSI. Cone Crusher. Cone crusher – A.