A mineral material crusher and method of operating a mineral material crusher that includes: a body, a rotating crusher element, a drive shaft arrangement that supports the rotating crusher element to the body and to rotate the rotating crusher element, and a motor including a rotor for driving the drive shaft arrangement. The motor is formed inside the rotating crusher element and the drive shaft arrangement is configured to form of the rotor a rotating axle that is rigidly coupled with the rotating crusher element and capable of leading torque from the rotor to the rotating crusher element for rotating the crusher element around the drive shaft.

A mineral material crusher and method of operating a mineral material crusher that includes: a body, a rotating crusher element, a drive shaft arrangement that supports the rotating crusher element to the body and to rotate the rotating crusher element, and a motor including a rotor for driving the drive shaft arrangement. The motor is formed inside the rotating crusher element and the drive shaft arrangement is configured to form of the rotor a rotating axle that is rigidly coupled with the rotating crusher element and capable of leading torque from the rotor to the rotating crusher element for rotating the crusher element around the drive shaft.

The subject matter of the invention is a roller mill comprising two rollers which are arranged in parallel, are pressed one against the other and rotate in opposite directions, wherein one of the rollers can be displaced orthogonally with respect to the axial direction of this roller, and two drives, which drives are each assigned to one of the two rollers, and each have an electric motor, a master of the electric motors predefines for the electric motors a setpoint value for the rotational speed of the torque as a reference, and a reference of a follower electric motor of the electric motors comprises the actual value of the torque or of the rotational speed of the master electric motor multiplied by a load distribution factor.

The subject matter of the invention is a roller mill comprising two rollers which are arranged in parallel, are pressed one against the other and rotate in opposite directions, wherein one of the rollers can be displaced orthogonally with respect to the axial direction of this roller, and two drives, which drives are each assigned to one of the two rollers, and each have an electric motor, a master of the electric motors predefines for the electric motors a setpoint value for the rotational speed of the torque as a reference, and a reference of a follower electric motor of the electric motors comprises the actual value of the torque or of the rotational speed of the master electric motor multiplied by a load distribution factor.

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.

This device crushes crystal granules in a solution to maintain granule size, shape, and texture. This is done by an inline crushing and grinding mill with fluted crushing rollers rotating at different speeds featuring a protective emergency fluidic bypass channel and follow-on emergency fluidic waste drain.

This device crushes crystal granules in a solution to maintain granule size, shape, and texture. This is done by an inline crushing and grinding mill with fluted crushing rollers rotating at different speeds featuring a protective emergency fluidic bypass channel and follow-on emergency fluidic waste drain.

The present invention relates to a grinder roller for use in a grinder roller pair, in particular a grain roller pair, comprising at least one sensor for the detection of measured values which characterize a state of the grinder roller, wherein the sensor is arranged in a receiving opening of the grinder roller, at least one data transmitter for the contactless transmission of the measured values of the at least one sensor to a data receiver, wherein the sensor is enclosed in the receiving opening by means of a cap made from ceramic material. Furthermore, the present invention relates to a corresponding grinder roller pair, to a production plant which comprises a grinder roller pair of this type, to a corresponding cap, to a kit consisting of a corresponding cap and a fastening device, and to a method for operating a product processing plant of this type.

The present invention relates to a grinder roller for use in a grinder roller pair, in particular a grain roller pair, comprising at least one sensor for the detection of measured values which characterize a state of the grinder roller, wherein the sensor is arranged in a receiving opening of the grinder roller, at least one data transmitter for the contactless transmission of the measured values of the at least one sensor to a data receiver, wherein the sensor is enclosed in the receiving opening by means of a cap made from ceramic material. Furthermore, the present invention relates to a corresponding grinder roller pair, to a production plant which comprises a grinder roller pair of this type, to a corresponding cap, to a kit consisting of a corresponding cap and a fastening device, and to a method for operating a product processing plant of this type.

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.