A carrying device (1) for the frontal removal of a roll body from a roll frame, comprising a main frame (2) and a receiving section (3) for the roll body. The receiving section (3) can be transferred from an introduction position (E) into a supporting position (S). The receiving section (3) has a profile which at least partially encloses the roll body in the supporting position (S), and the carrying device (1) can be pushed in below the roll body with the receiving section (3) in the introduction position (E), and the roll body is carried with the receiving section (3) in the supporting position (S).

A comminution device can include a crushing body extraction mechanism. The crushing body extraction mechanism can be configured to permit one or more crushing bodies (e.g. rollers of a roller press, etc.) to be continuously moved linearly away from a frame to expose the crushing bodies from the frame. In some embodiments, the extraction mechanism may be configured to utilize one or more rack and pinion mechanisms. The pinion for each such mechanism may be powered by one or more rotary motors or other type of rotary drive mechanism. In other embodiments, the extraction mechanism can include one or more rack and ratchet mechanisms. Each rack and ratchet mechanism may include a hydraulic cylinder or other linear actuator that is extendable and retractable for actuating motion of a ratchet along a rack having columns of differently angled steps to facilitate extension and retraction of one or more crushing bodies.

A comminution device can include a crushing body extraction mechanism. The crushing body extraction mechanism can be configured to permit one or more crushing bodies (e.g. rollers of a roller press, etc.) to be continuously moved linearly away from a frame to expose the crushing bodies from the frame. In some embodiments, the extraction mechanism may be configured to utilize one or more rack and pinion mechanisms. The pinion for each such mechanism may be powered by one or more rotary motors or other type of rotary drive mechanism. In other embodiments, the extraction mechanism can include one or more rack and ratchet mechanisms. Each rack and ratchet mechanism may include a hydraulic cylinder or other linear actuator that is extendable and retractable for actuating motion of a ratchet along a rack having columns of differently angled steps to facilitate extension and retraction of one or more crushing bodies.

The invention relates to a process for producing superabsorbent polymer particles, comprising polymerization of a monomer solution, drying the resulting polymer gel and grinding the dried polymer gel with a roll mill, wherein the rolls of the roll mill are cleaned by reducing the feed rate to the roll mill, and if the deflection and/or the power consumption increases above a setpoint, operating the roll mill with reduced feed, and increasing the feed rate to the roll mill.

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.

The invention relates to a device (1) for comminuting particles in a liquid material, in particular a powder or a semi-liquid for producing a chocolate mass. Said device (1) comprises at least one pair of rollers (2, 3), for which at least one process parameter, in particular the roller contact pressure and/or the rotational speed of one of the rollers (2, 3) can be adjusted. The invention also relates to a device (1) comprising a filling level meter (11) for measuring the height of the filling level (5) of the liquid material in the roller gap or in a roller trough (4) arranged upstream of the rollers. A control unit (11) modifies at least one process parameter in accordance with the measured height of the filling level (5) of the liquid material in the roller gap or in the roller trough (4). The invention also relates to a method for comminuting particles in a liquid material and to a method for calibrating a control unit (10).

A glass breaking apparatus (10) includes a belt conveyor assembly (100) configured to transfer glass in a first direction, and a breaking roller assembly (200) configured to break the glass received from the belt conveyor assembly, the breaking roller assembly including a first breaking roller (210) including a breaking pin (215) and configured to rotate around a rotation axis extending in a second direction perpendicular to the first direction, and a second breaking roller (220) arranged under the first breaking roller (210), configured to rotate in a direction opposite to a rotation direction of the first breaking roller.

A comminution device can include a crushing body extraction mechanism. The crushing body extraction mechanism can be configured to permit one or more crushing bodies (e.g. rollers of a roller press, etc.) to be continuously moved linearly away from a frame to expose the crushing bodies from the frame. In some embodiments, the extraction mechanism may be configured to utilize one or more rack and pinion mechanisms. The pinion for each such mechanism may be powered by one or more rotary motors or other type of rotary drive mechanism. In other embodiments, the extraction mechanism can include one or more rack and ratchet mechanisms. Each rack and ratchet mechanism may include a hydraulic cylinder or other linear actuator that is extendable and retractable for actuating motion of a ratchet along a rack having columns of differently angled steps to facilitate extension and retraction of one or more crushing bodies.

A crusher includes a base, a cylinder pivoted to the base, cutting portions arranged on the cylinder. A crusher cutter assembly is further provided, including: a cutter base, for being assembled to the crusher, having receiving slots including an abutting recess and a bottom portion. A crusher cutter is further provided for assembling on the cutter base. The crusher cutter includes: two corner portions, disposed on two sides thereof, for being inserted in the abutting recess and fixed on the cutter base, two sides of the corner portion abutting against the abutting recess; two abutting portions, disposed on two opposite sides of the crusher cutter, for being positionably abutting against another crusher cutter; wherein when the crusher cutter is fixed on the cutter base, a part of the corner portion protrudes beyond the cutter base and is alternatively shifted with a part of the cutting portions.

A double roll crusher is provided for mined oil sands feed, even in the winter season. Each roll has a driveline driven by a high efficiency motor controlled by a variable frequency drive (VFD). Through removal of the prior, yet ubiquitous fluid coupling and related failure-prone components, a shorter, streamlined, lower inertia driveline results. The VFDs and a system controller adapt to the processing of difficult oil sand feed, anticipating high current events, adjusting roll speed on-the-fly, adjusting feeder rate or both to minimizing the high cost of process interruptions. Maximum startup torque and on-the-fly modification of roll and feeder speeds is provided to manage feed, environment and process variations and in instances of a stall, immediate recovery therefrom for reduced downtime, reduced wear and increased efficiency.