System and method for controlling the startup sequence of a roller crusher is disclosed. The roller crusher includes two generally parallel rollers that are separated by a gap where the rollers rotate in an opposite direction. During startup, the gap between the rollers is greater than the gap during normal production and a feeding arrangement is run at a speed that is lower than a normal production feed rate. The rollers are rotated at a predetermined speed that is less than the speed during normal production. Other parameters of the system are set such that material is fed over the entire length of the rollers and the no crushing force is exerted during the startup. The method and system of the present disclosure reduces the amount of stress on the rolls, frame and hydraulic system of the roller crusher.

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, and wherein a second end of each of the thrust rods is arranged to be attached to a movable bearing housing of the roller crusher. Also disclosed is a method for mounting the deflection distributor refitting kit, as well as a roller crusher comprising a deflection.

A control method of a treatment plant for elements to be recycled or disposed of, which includes a crushing roll adapted to reduce the size of the elements to be recycled or disposed of and a screen provided with one or more rotary shafts adapted to generate its vibration and operatively arranged upstream of the crushing roll to enable passage to the crushing roll only of elements having a size larger than a predetermined size, includes a measuring step of the vibration intensity of the screen; a comparing step of the measured vibration intensity to a desired value; and an increasing step of the rotation speed of the rotary shafts of the screen to increase the vibration intensity in case differences between the measured and desired vibration intensities exceed a predetermined threshold value.

Roller pairs for processing a product, containing two grinding rollers, wherein at least one roller contains at least one sensor for obtaining measured values that characterize a state of at least one of the rollers, in particular a state of a circumferential surface. The sensor has a data connection to a data transmitter designed to transmit the measured values to a data receiver in an contact-free manner. Additionally, a measuring device for insertion into a receiving opening of a roller body of a roller of a roller pair, a product-processing installation, in particular a grinding installation containing at least one roller pair, a method of operating a product-processing installation, and a method of converting and/or upgrading at least one roller body are disclosed.

Roller pairs for processing a product, containing two grinding rollers, wherein at least one roller contains at least one sensor for obtaining measured values that characterize a state of at least one of the rollers, in particular a state of a circumferential surface. The sensor has a data connection to a data transmitter designed to transmit the measured values to a data receiver in an contact-free manner. Additionally, a measuring device for insertion into a receiving opening of a roller body of a roller of a roller pair, a product-processing installation, in particular a grinding installation containing at least one roller pair, a method of operating a product-processing installation, and a method of converting and/or upgrading at least one roller body are disclosed.

An example method for operating a plant, which has at least one assembly with a rotating surface that wears to an increasing extent during the operation of the plant, may involve evaluating a wear state of the rotating surface of the assembly. Based on the wear state of the rotating surface, a manner in which the plant is operated may be modified to prolong the running time of the assembly until, for instance, a next-scheduled service or maintenance interval. The modified manner of operating the plant may be adapted to the wear state of the rotating surface. Several examples of such modifications include changing a quantity of water sprayed onto material to be comminuted, changing a quantity of grinding additive added to material to be comminuted, and/or changing a contact pressure of a grinding roll of the assembly.

An example method for operating a plant, which has at least one assembly with a rotating surface that wears to an increasing extent during the operation of the plant, may involve evaluating a wear state of the rotating surface of the assembly. Based on the wear state of the rotating surface, a manner in which the plant is operated may be modified to prolong the running time of the assembly until, for instance, a next-scheduled service or maintenance interval. The modified manner of operating the plant may be adapted to the wear state of the rotating surface. Several examples of such modifications include changing a quantity of water sprayed onto material to be comminuted, changing a quantity of grinding additive added to material to be comminuted, and/or changing a contact pressure of a grinding roll of the assembly.

A control method of a treatment plant for elements to be recycled or disposed of, having a crushing roll to reduce the size of the elements to be recycled or disposed of, and a screen operatively arranged upstream of the crushing roll to enable passage therethrough only of elements having a size larger than a predetermined size, includes the steps of measuring the current absorbed by the crushing roll; comparing the measured current value to a first predetermined value; and reducing the vibrations of the screen, if the measured current exceeds the first predetermined value.

The exemplary embodiments herein provide a roller grain mill assembly having a lower frame, a plurality of roller grain mills attached to the lower frame, an upper frame extending upwardly from the lower frame, a single electric drive mechanically coupled to each of the roller grain mills, and a cyclone separator placed in gaseous communication with the roller grain mills and located above the electric drive. In some embodiments, a centrifugal scatterer may be suspended from the upper frame and placed in gaseous communication with the roller grain mill. In other embodiments, a cyclone separator may be placed in gaseous communication with the roller grain mill and centrifugal scatterer. An electric drive coupled to each roller grain mill may be cantilevered off the lower frame.

A foam glass aggregate slicing and reduction machine and system which rapidly, effectively, and economically reduces large pieces of aggregate to required sizes with minimal powdery waste. The machine comprises a foam glass aggregate collection chute having a bottom outlet section for discharging foam glass aggregate onto a holdbar located adjacent to the outlet section. A rotating roller supports a plurality of rotating roller knives which slices large pieces of foam glass aggregate to reduce the aggregate to fragments, with minimal powdery waste. A foam glass aggregate guide member directs foam glass aggregate towards the rotating roller. A foam glass aggregate filtering bar having rows of intervening spaces is located below the guide member and adjacent to the rotating roller.