A method and apparatus for grinding a particulate material is disclosed. The method may include providing a system including a roller mill apparatus and a hammermill apparatus, operating the roller mill apparatus and the hammermill apparatus, adjusting a feed rate of particulate material to the roller mill apparatus until power consumption by operation of the roller mill apparatus achieves a target power consumption for the roller mill apparatus, and adjusting a gap between mill rolls of the roller mill apparatus until power consumption by operation of the hammermill apparatus achieves a target power consumption for the hammermill apparatus. The system may include roller and hammermill apparatus with sensing and controlling apparatus configured to operate the roller and hammermill apparatus according to the methods disclosed.

A pulverizer may have such features as an ability to detect wrapping as well as possibly deter wrapping. A processor may also adjust the speed of rotation of the arms within the pulverizer and/or the speed of feed of input for various considerations. In fact the rotation direction may be reversed for at least brief periods of time in an effort to remove wrapped material. Vibration may also be sensed and efforts to prevent damage may be instigated by a processor.

An impact processing device has a central impact mechanism arranged to rotate about a rotation axis and a first processing stage that includes the impact mechanism and a first structure extending circumferentially about the impact mechanism. The first structure has a first processing sector, and a first screening sector, where the processing sector extends for a first circumferential portion of the first structure and has an impervious textured surface and the first screening sector has a plurality of holes and extends for a second circumferential portion of the first structure. The impact mechanism is operable to impact material against the first processing sector and generate a flow of the impacted material to first screening sector through which at least a portion of the impacted material can pass.

An impact processing device has a central impact mechanism arranged to rotate about a rotation axis and a first processing stage that includes the impact mechanism and a first structure extending circumferentially about the impact mechanism. The first structure has a first processing sector, and a first screening sector, where the processing sector extends for a first circumferential portion of the first structure and has an impervious textured surface and the first screening sector has a plurality of holes and extends for a second circumferential portion of the first structure. The impact mechanism is operable to impact material against the first processing sector and generate a flow of the impacted material to first screening sector through which at least a portion of the impacted material can pass.

The mobile waste comminuting device of the invention comprises: at least one comminuting shaft; an internal combustion engine; at least one generator that is coupled to the internal combustion engine to convert mechanical energy supplied by the internal combustion engine into electric energy; at least one electric motor which is powered by the electric energy so as to drive the at least one comminuting shaft and change the direction of rotation thereof; and an energy store for storing energy and at least partly powering the at least one electric motor with electric energy, in particular for storing energy during periods of low power demand and supplying energy during periods of high power demand in relation to the nominal power of the at least one generator.

The mobile waste comminuting device of the invention comprises: at least one comminuting shaft; an internal combustion engine; at least one generator that is coupled to the internal combustion engine to convert mechanical energy supplied by the internal combustion engine into electric energy; at least one electric motor which is powered by the electric energy so as to drive the at least one comminuting shaft and change the direction of rotation thereof; and an energy store for storing energy and at least partly powering the at least one electric motor with electric energy, in particular for storing energy during periods of low power demand and supplying energy during periods of high power demand in relation to the nominal power of the at least one generator.

A rotary crushing apparatus includes a container (including a stationary drum, a rotating drum, and a top plate) into which a processing object containing raw material soil is fed. A rotating shaft extends in the vertical direction, and an impact member rotates in the rotating drum by the rotation of the rotating shaft to crush the processing object. Then, the rotating shaft is provided in such a way as to penetrate the top plate 10a, and the rotating shaft is rotatably held via ball bearings provided in the vicinity of the top plate. In addition, the lower end of the rotating shaft is a free end.

A rotary crushing apparatus includes a container (including a stationary drum, a rotating drum, and a top plate) into which a processing object containing raw material soil is fed. A rotating shaft extends in the vertical direction, and an impact member rotates in the rotating drum by the rotation of the rotating shaft to crush the processing object. Then, the rotating shaft is provided in such a way as to penetrate the top plate 10a, and the rotating shaft is rotatably held via ball bearings provided in the vicinity of the top plate. In addition, the lower end of the rotating shaft is a free end.

A machine such as a material processing apparatus comprises a mechanical transmission system coupled to a mechanical load such as a crusher. An internal combustion engine is coupled to the mechanical transmission system, and at least one motor-generator is coupled to an electrical system and to the mechanical transmission system. In at least one mode of operation, the electrical system delivers electrical power to the motor-generator(s), the motor-generator(s) generating mechanical power from the electrical power and delivering the mechanical power to the mechanical transmission system to drive the mechanical load.

A machine such as a material processing apparatus comprises a mechanical transmission system coupled to a mechanical load such as a crusher. An internal combustion engine is coupled to the mechanical transmission system, and at least one motor-generator is coupled to an electrical system and to the mechanical transmission system. In at least one mode of operation, the electrical system delivers electrical power to the motor-generator(s), the motor-generator(s) generating mechanical power from the electrical power and delivering the mechanical power to the mechanical transmission system to drive the mechanical load.