Abstract: A roll for a roller press suitable for comminution of granular material by interparticle crushing. The roll comprising a cylindrical body having an outer cylindrical pressing surface for use with an opposing roll in an interparticle crushing pressing nip and a plurality of outwardly extending wear-resistant surface studs positioned on the pressing surface. A strip element is provided on the outer cylindrical pressing surface of the cylindrical body.

Abstract: The invention relates to a roll for a roller press suitable for comminution of granular material by interparticle crushing, as well as a roller press provided with such a roll. In certain applications and under specific operational conditions the autogenous layer starts to displace or flow between the outwardly extending wear-resistant surface studs. This flow of granular material has a low velocity relative to the roll and can cause excessive wear to the base material of the outer cylindrical pressing surface of the roll, instead of protecting it.

Abstract: A method for operating a cutting dredger in open water, in particular to control a ground reaction force during dredging operations, the dredger including; a floating body, an elongate cutter ladder having a cutting head at its lowerable free end for dredging, which cutter ladder is hingeably coupled to the floating body and hingeable between an upwards position and a cutting position wherein the cutting head engages matter to be cut away at the floor of a body of water.

Abstract: A method for operating a cutting dredger in open water, in particular to control a ground reaction force during dredging operations, the dredger including; a floating body, an elongate cutter ladder having a cutting head at its lowerable free end for dredging, which cutter ladder is hingeably coupled to the floating body and hingeable between an upwards position and a cutting position wherein the cutting head engages matter to be cut away at the floor of a body of water.