A method of processing magnetite iron ore, including the step of using a high pressure grinding roller (HPGR) to crush the magnetite. An apparatus for processing magnetite iron ore, including a first high pressure grinding roller for crushing the magnetite, a dry screen for selectively feeding back material to the first high pressure grinding roller, an air classifier for selectively feeding back material to the second high pressure grinding roller, a second high pressure grinding roller for grinding the magnetite, and a dry magnetic separation (DMS) unit for discarding non-magnetic materials, wherein the dry magnetic separation unit is outside the two feedback loops associated with the first and second high pressure grinding rollers.

A drive for a mobile material processing plant, in particular for a rock crusher, includes an internal combustion engine that drives a mechanical drive train on its drive end, wherein the drive train has an output end having at least one output, wherein the output(s) are used to drive at least one crusher unit and preferably one generator for generating electrical energy, in particular for use in the material processing plant and/or at least one hydraulic system having a hydraulic pump. For the benefit of optimized operation of the material processing plant, according to the disclosure provision is made for the internal combustion engine to be coupled to the drive train via a shiftable transmission having a variable transmission ratio.

A drive for a mobile material processing plant, in particular for a rock crusher, includes an internal combustion engine that drives a mechanical drive train on its drive end, wherein the drive train has an output end having at least one output, wherein the output(s) are used to drive at least one crusher unit and preferably one generator for generating electrical energy, in particular for use in the material processing plant and/or at least one hydraulic system having a hydraulic pump. For the benefit of optimized operation of the material processing plant, according to the disclosure provision is made for the internal combustion engine to be coupled to the drive train via a shiftable transmission having a variable transmission ratio.

A torque support for absorbing drive torques of at least one shaft drive, having two first force-conducting elements, each of which is rotatably fixed to the shaft drive at a distance from one another by a first end, and having a support element arranged at a distance from the shaft drive, to which support element the first force-conducting elements are each fixed rotatably and at a distance from one another by a second end opposite the first end, and spaced apart from one another, and having two second force-conducting elements which are each fixed at a first end to the support element in a rotatable manner and spaced apart from one another and are each fixed at a second end, opposite the first in each case, to a fixed element which is independent of the shaft drive in a rotatable manner and spaced apart from one another. A corresponding roller arrangement is further disclosed.

A braking system for use with a crusher having a moving crushing member and a stationary crushing member. The braking system is positioned and is operable to restrict rotational movement of the moving crushing member. The braking system includes a braking disc or plate and one or more braking yokes that each include a magnetic member, such as a permanent magnet or an electric magnet. The braking disc is formed from an electrically conductive material and is perpendicular to the magnets of the braking yoke. Relative movement between the braking disc and the braking yoke induces an eddy current in the braking disc. The induced eddy current creates a magnetic force that opposes rotational movement of the moving crushing member. The braking system can be used with a compact eccentric crusher to restrict the rotation of a crushing roller during an idle mode.

A braking system for use with a crusher having a moving crushing member and a stationary crushing member. The braking system is positioned and is operable to restrict rotational movement of the moving crushing member. The braking system includes a braking disc or plate and one or more braking yokes that each include a magnetic member, such as a permanent magnet or an electric magnet. The braking disc is formed from an electrically conductive material and is perpendicular to the magnets of the braking yoke. Relative movement between the braking disc and the braking yoke induces an eddy current in the braking disc. The induced eddy current creates a magnetic force that opposes rotational movement of the moving crushing member. The braking system can be used with a compact eccentric crusher to restrict the rotation of a crushing roller during an idle mode.

A torque support for absorbing drive torques of at least one shaft drive, having two first force-conducting elements, each of which is rotatably fixed to the shaft drive at a distance from one another by a first end, and having a support element arranged at a distance from the shaft drive, to which support element the first force-conducting elements are each fixed rotatably and at a distance from one another by a second end opposite the first end, and spaced apart from one another, and having two second force-conducting elements which are each fixed at a first end to the support element in a rotatable manner and spaced apart from one another and are each fixed at a second end, opposite the first in each case, to a fixed element which is independent of the shaft drive in a rotatable manner and spaced apart from one another. A corresponding roller arrangement is further disclosed.

A system for converting cellulosic feedstock to sugar is disclosed and has a reactor chamber configured receive the cellulosic feedstock, a crusher assembly configured to receive the cellulose feedstock wherein the crusher assembly is configured to grind the mixture under pressure to induce a reaction between the cellulosic feedstock and a natural occurring griding element in the feedstock to produce a grinded mixture and sugar, wherein the crusher assembly comprises rollers.

A system for converting cellulosic feedstock to sugar is disclosed and has a reactor chamber configured receive the cellulosic feedstock, a crusher assembly configured to receive the cellulose feedstock wherein the crusher assembly is configured to grind the mixture under pressure to induce a reaction between the cellulosic feedstock and a natural occurring griding element in the feedstock to produce a grinded mixture and sugar, wherein the crusher assembly comprises rollers.

Disclosed is a deflection distributor refitting kit for a roller crusher. According to the disclosure the deflection distributor refitting kit comprises a deflection distributing shaft, thrust rods each having first and second ends and mounts for attachment of the deflection distributing shaft at a frame of the roller crusher, wherein a first end of each of said thrust rods is attached to the deflection distributing shaft via a lever, wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher, and wherein the deflection distributor refitting kit further comprises a preload arrangement which induces a bias to parts of the deflection distributor refitting kit. Also disclosed is a method for mounting the deflection distributor refitting kit, as well as a roller crusher comprising a deflection distributor.