Abstract: A crusher having a protective liner, the protective liner including a plurality of lining segments which are arranged circumferentially along an a of the crusher. At least some of the segments have a trapezoidal shape with two bases of different lengths arranged parallel to the circumferential direction of the wall and two non-parallel legs connecting the bases. Further, at least some of the segments are arranged along the circumference of the wall such that long and short bases of adjacent segments alternate, and wherein at least some of the segments are allowed to vary in their axial position with respect to adjacent segments to compensate for tolerances in diameter of the wall of the crusher.

Abstract: A flotation line for treating mineral ore particles suspended in slurry is disclosed. The flotation line includes a scavenger part and a scavenger cleaner part. The flotation line is characterized in that the scavenger part or the scavenger cleaner part includes a flotation cell with blast tubes for introducing slurry infeed into the flotation cell; or in that the scavenger part or the scavenger cleaner part is followed by a flotation cell with blast tubes for introducing slurry infeed into the flotation cell. Further, a use of the flotation line is presented, as well as a flotation plant including a flotation line according to the invention.

Abstract: 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 and a movement blocking arrangement structured and arranged to limit the gap between the rollers to a minimum gap of at least 45 mm. The roller crusher further includes at least one scraper positioned at an end of the roller with a flange. The scraper is positioned such that a minimum roller surface distance between each scraping surface of the at least one scraper and the outer surface of the roller is at least 70% of the minimum gap. A method for arrangement of a roller crusher is also provided.

Abstract: An on-road truck body lining for protecting an on-road truck body from wear. The on-road truck body lining includes a plurality of main lining elements and a plurality of edge lining elements arranged to be fixated to the on-road truck body. Each of the main lining element includes a load facing portion, one or more transition sides each adapted to meet a corresponding transition side of an adjacent edge lining element and a truck body facing portion, arranged opposite to the load facing portion. The truck body facing portion includes one or more end portions protruding from a respective transition side of the load facing portion such that the one or more end portions of the truck body facing portion are each arranged to be covered by a respective adjacent edge lining element such that the respective adjacent edge lining element, upon being fixated, clamps the main lining element to the on-road truck body.

Abstract: A method for controlling crushing equipment, wherein the crushing equipment includes a crusher, a feeding arrangement for feeding material to the crusher, a secondary equipment arranged downstream from the crusher for sorting out oversized material leaving the crusher, and a recirculation loop for recirculating the oversized material fed to the crusher. The method includes the steps of stop feeding new material to the crushing equipment through said feeding equipment, recirculating the oversized material from the secondary equipment to the crusher and decreasing a crusher setting of the crusher.

Abstract: A wear element for a slurry pump. At least a portion of the wear element produces a magnetic field for attracting magnetic particles in a slurry processed by the slurry pump. The wear element includes a magnet arranged to generate a protective wear layer on a surface of the wear element. The slurry pump includes a pump housing and a wear element within the pump housing. At least a portion of the wear element produces a magnetic field for attracting magnetic particles present in a slurry processed by the slurry pump. A protective wear layer is formed in a slurry pump by arranging a wear element in a housing of the slurry pump. At least a portion of the wear element produces a magnetic field. A slurry including magnetic particles is pumped through the slurry pump and the magnetic particles are attracted by the magnetic field to create the protective wear layer.

Abstract: The present disclosure relates to a hydrocyclone separator for size classifying solid material in liquid suspension, comprising a head part, a tapered separation part, and an apex discharge part for underflow discharge, the tapered separation part being arranged between the head part and the apex discharge part, wherein the apex discharge part has a first opening aligned and attached with the tapered separation part, and has a second opening for underflow discharge in a surface opposite to the first opening, the first opening being larger than the second opening, and an inner surface of the apex discharge part has a curvature extending from the first opening to the second opening, and wherein the apex discharge part at the second opening ends in a curvature in a tangential angle, ?, within the range of 0°<?<40° from a reference plane defined transverse to a common symmetry axis of the tapered separation part and the apex discharge part.

Abstract: A rotor for a comminution apparatus. The rotor includes a frame including an upper plate, a lower plate and wall elements. The rotor further includes an inlet opening in the upper plate and one or more outlets located between the upper plate and the lower plate. A distributor plate is arranged at an upper surface of the lower plate below the inlet opening and is arranged to launch the material towards a contact surface. The distributor plate includes a cavity being open at a lower surface of the distributor plate. The rotor further includes attachment means for maintaining the distributor plate at the upper surface of the lower plate. The attachment means are arranged to frictionally engage with a corresponding surface of the cavity and the attachment means enable the distributor plate to be repositioned into different wear positions.

Abstract: A hydraulic system for a roller crusher comprising at least one first main actuator connectable to a first movable bearing housing of the roller crusher, at least one second main actuator connectable to a second movable bearing housing of the roller crusher, a first crossing actuator operationally coupled to the at least one first actuator, and a second crossing cylinder operationally coupled to the at least one second main actuator. A first compression chamber of the first crossing cylinder is fluidly connected to a second rebound chamber of the second crossing cylinder, and a first rebound chamber of the first crossing cylinder is fluidly connected to a second compression chamber of the second crossing cylinder.

Abstract: A lifter bar for an open-ended grinding mill that includes an elongated bar structure and at least one groove portion provided in the elongated bar structure. The groove portion is configured to open on the side of the lifter bar facing outwards from the grinding mill volume, when the lifter bar is mounted onto the grinding mill. The groove portion is provided with at least one through hole opening for a mounting member.

Abstract: A screen medium of a mobile multi-deck screen is tensioned with a tensioner. A tensioning link engages and tensions a screen medium on a side thereof by at least two linear tension rods, when the screen medium side tensioner is installed to the mobile multi-deck screening device. An adjusting member causes for each of the at least two linear tension rods, a linear movement tensioning by the tensioning link the side of the screen medium above the two linear tension rods. A retractor disengages the tensioning link responsively to untightening the at least two tensioning rods. A screen deck, a screen and a mobile multi-deck screening device are also disclosed as well as a method for replacing a screen medium using the tensioner.

Abstract: The disclosure relates to a slurry pump for mineral processing and a pump housing for a slurry pump. The pump housing comprising a front part, a peripheral part, and a back part. The peripheral part comprises one or more first protrusions and/or indentations configured to create a turbulent flow.

Abstract: The present invention relates to a system for detecting and handling an overload event in a crusher system. The system comprises a crusher system a crusher for comminution of material. The crusher comprises a clamping arrangement, and a clamping pressure sensor configured to measure a clamping pressure of the clamping arrangement. A processing unit communicatively connectable to the clamping pressure sensor, where the processing unit is configured to output an alarm signal and/or an instruction adjust an operation parameter of the crusher system, based on a received clamping pressure signal.

Abstract: A rotor for a comminution apparatus that is arranged to launch material to be comminuted towards a surface, such as an anvil or an autogenous layer of crushed material. The rotor includes a frame including an upper plate, a lower plate and wall elements extending between the upper plate and the lower plate. The rotor further includes an inlet opening in the upper plate and an outlet located between the upper plate and the lower plate. An uppermost surface of the frame and a lowermost surface of the frame have a greater hardness than the rest of the frame such that additional wear protection elements may be omitted at those uppermost and lowermost surfaces.

Abstract: A wear element for a slurry pump. At least a portion of the wear element produces a magnetic field for attracting magnetic particles in a slurry processed by the slurry pump. The wear element includes a magnet arranged to generate a protective wear layer on a surface of the wear element. The slurry pump includes a pump housing and a wear element within the pump housing. At least a portion of the wear element produces a magnetic field for attracting magnetic particles present in a slurry processed by the slurry pump. A protective wear layer is formed in a slurry pump by arranging a wear element in a housing of the slurry pump. At least a portion of the wear element produces a magnetic field. A slurry including magnetic particles is pumped through the slurry pump and the magnetic particles are attracted by the magnetic field to create the protective wear layer.

Abstract: The present disclosure relates to a hydrocyclone separator for size classifying solid material in liquid suspension, comprising a head part, a tapered separation part, and an apex discharge part for underflow discharge, the tapered separation part being arranged between the head part and the apex discharge part, wherein the apex discharge part has a first opening aligned and attached with the tapered separation part, and has a second opening for underflow discharge in a surface opposite to the first opening, the first opening being larger than the second opening, and an inner surface of the apex discharge part has a curvature extending from the first opening to the second opening, and wherein the apex discharge part at the second opening ends in a curvature in a tangential angle, ?, within the range of 0°<?<40° from a reference plane defined transverse to a common symmetry axis of the tapered separation part and the apex discharge part.

Abstract: A method for controlling crushing equipment, wherein the crushing equipment includes a crusher, a feeding arrangement for feeding material to the crusher, a secondary equipment arranged downstream from the crusher for sorting out oversized material leaving the crusher, and a recirculation loop for recirculating the oversized material fed to the crusher. The method includes the steps of stop feeding new material to the crushing equipment through said feeding equipment, recirculating the oversized material from the secondary equipment to the crusher and decreasing a crusher setting of the crusher.

Abstract: An autoclave for pressure oxidation of a slurried material including at least one sulfide material, and a method. The autoclave includes a pressure vessel for receiving the slurried material. The pressure vessel includes compartments being arranged horizontally one after the another and separated by dividers. Each divider is provided with an upper edge or at least one opening that defines level of the slurried material in the compartment. An inlet is arranged for feeding oxygen-containing gas into the pressure vessel. An agitator arrangement is arranged for agitating the slurried material in at least one of the compartments, the agitator arrangement including at least an upper impeller and a lower impeller, the impellers arranged along a vertically aligned shaft. The upper impeller is arranged at a height above the mid-level of one of the compartments, and the upper impeller is an upward pumping axial or mixed flow impeller.

Abstract: A filter plate assembly for a filter press, comprising a filter frame and a filter plate supported on the filter frame. A diaphragm is provided between the filter frame and the filter plate, the diaphragm further comprising, on a side facing the filter frame, a seal bead for sealing the diaphragm against the filter plate. The seal bead comprises a first seal lip and a second seal lip, the former being elevated from the later. The filter frame has a limited vertical travel with respect to the filter plate, such that, in a lowermost position, only the first seal lip is in contact with the filter plate, and in an uppermost position, both the first seal lip and the second seal lip are in contact with the filter plate.