The invention relates to a roller crusher having two generally parallel rollers arranged to rotate in opposite directions, towards each other, and separated by a gap, each roller having a first end and a second end. The roller crusher comprises a flange attached to at least one of said ends of one of said rollers. The flange extending in a radial direction of said roller, and has a height above an outer surface of said roller which is sufficient to extend across said gap substantially along a nip angle of said roller crusher.

A high-pressure roller mill for comminuting brittle grinding stock having at least two adjacent rotating grinding rollers which rotate in opposite directions and form a nip therebetween, wherein a first grinding roller is a fixed roller and a second grinding roller is an idle roller, and a lateral wall at each of the two ends of the nip. Each lateral wall has a vibration device which sets the lateral wall into mechanical vibration.

A high-pressure roller mill for comminuting brittle grinding stock having at least two adjacent rotating grinding rollers which rotate in opposite directions and form a nip therebetween, wherein a first grinding roller is a fixed roller and a second grinding roller is an idle roller, and a lateral wall at each of the two ends of the nip. Each lateral wall has a vibration device which sets the lateral wall into mechanical vibration.

A roller crusher having two generally parallel rollers arranged to rotate in opposite directions, towards each other, and separated by a gap, where each roller has two ends. The roller crusher includes a flange attached to at least one of the ends of one of the rollers, where the flange extends in a radial direction of the roller and has a height above an outer surface of the roller. The roller crusher further includes at least two scrapers arranged consecutive to each other at an end of the roller with a flange for at least partially removing material accumulated on the flange and/or on the outer surface at the end of the roller. A method for operating a roller crusher is also provided.

A roller crusher having two parallel rollers that rotate in opposite directions and are separated by a gap. At least one of the rollers has a flange at an end thereof. The roller crusher includes a material removal device having a rotatable cutter unit with a plurality of cutter elements arranged tangentially about the rotatable cutter unit at a radial distance from a rotational axis for the rotatable cutter unit. A rotation device rotates the rotatable cutter unit at an end of a roller having a flange. When the cutter unit is rotated by the rotation device, the cutter unit at least partially cuts away material accumulated on the flange and/or on the envelope surface at an end portion of the roller adjacent the flange. Each cutter elements presents an impact surface that faces the material to be cut away and is a polycrystalline diamond (PCD).

A milling roll of a roll mill may have a roll main body and an edge element that is attached to an end region of a roll end of the milling roll and extends in a radial direction beyond a surface of the roll main body. The edge element comprises a base flange and a spacer element that is attached thereto. Wear protection elements can be attached to the spacer element. Furthermore, a roll mill may have a first milling roll and a second milling roll that are arranged opposite one another and can be driven in opposite directions. A milling gap is disposed between the milling rolls, and an edge element on one of the milling rolls may extend over the milling gap and at least partially cover an end side of the opposite milling roll.

A high-pressure roller press has a press frame, fixed and movable compression rollers rotatable about respective roller axes in the press frame, each having axially opposite roller ends in turn having end faces, and together forming a compaction zone with a roller gap vertically level with the roller axes and having a gap width that is variable during operation of the roller press. Two end plates axially flank the compaction zone at the roller ends, are mounted on the press frame so as to be movable, and are prestressed to shift axially outward away from the respective roller end faces against a prestress force during operation of the roller press. Respective single end rollers rotatable about respective end-roller axes axially delimit the roller gap and are mounted on the end plates vertically level with the roller gap.

The disclosure relates to a roller crusher including a first grinding roll and a second grinding roll, the first and second grinding rolls being arranged generally in parallel to each other and to define a crushing gap therebetween and drivable in a counter-rotating manner. The roller crusher includes a device of a first type for loosening granular material present on a crushing surface of at least one of the rolls, the device including at least one rotatable disc element. The subject further relates to a roller crusher, wherein the plurality of disc elements is individually rotatable.

A high-pressure roller press has a press frame and two main rollers rotatable about respective main-roller axes in the press frame, together forming a filling funnel level with the main-roller axes, and having a gap width that is variable during operation of the roller press. Respective end plates axially flank and delimit the filling funnel between axially outwardly directed end faces of the main rollers. Respective end rollers are movable axially inward toward the end plates with each end roller laterally adjacent the main rollers vertically level with the roller gap, rotatably mounted about its end-roller axis, and laterally delimiting the roller gap, the end rollers being movable relative to the respective end plates. The end plates can each be urged by biasing forces axially toward of the respective main-roller end faces, whereas they are axially outward against the biasing forces during operation of the roller press.