The invention relates to a method and a system for separating dust-containing material mixtures which contain fibers, preferably glass fibers, and have heavy metal (SM) and/or precious metal (EM) from the process of recycling electric or electronic devices, wherein the method has at least one step (S1) of mechanically releasing particles from fiber-containing mixed material agglomerates in a dry manner and at least one step (S2) of mechanically releasing fiber-containing mixed material agglomerates in a dry manner.

A mobile weed-sifting apparatus includes a manually-operated mobile frame including a primary fulcrum axis, and a secondary fulcrum axis disposed above the primary fulcrum axis and registered parallel thereto. Notably, a weed-sifting mechanism is rotatably and removably coupled to the mobile frame. Advantageously, the weed-sifting mechanism rotates in clockwise and counter clockwise directions about the secondary fulcrum axis as the mobile frame is displaced along forward and rearward directions, respectively, along a ground surface.

There is provided a system for monitoring a screening machine, comprising a vibration sensor configured to record a vibration response of a screen fabric of the screening machine; and a signal processing device for digitally processing and evaluating the vibration response. In this connection, the signal processing device comprises an adaptive algorithm which is based on the methods of artificial intelligence, is related to vibration responses of one or several comparative screen fabrics and is adapted to characterize the vibration response recorded by the vibration sensor. Furthermore, a method for monitoring a screening machine is presented.

A method for recording motion patterns (210) of tumbler screening machines (410) is disclosed, wherein the method comprises applying of an active or passive optical marking (500, 510) at a tumbler screening machine (410), recording an image of the optical marking (500, 510) during operation of the tumbler screening machine (410), establishing image data for a motion curve (200), and internally or externally evaluating the recorded image data and determining machine parameters and diagnosis data. Furthermore, a device for recording motion patterns (210) of tumbler screening machines (410) is introduced.

A method for recording motion patterns (210) of tumbler screening machines (410) is disclosed, wherein the method comprises applying of an active or passive optical marking (500, 510) at a tumbler screening machine (410), recording an image of the optical marking (500, 510) during operation of the tumbler screening machine (410), establishing image data for a motion curve (200), and internally or externally evaluating the recorded image data and determining machine parameters and diagnosis data. Furthermore, a device for recording motion patterns (210) of tumbler screening machines (410) is introduced.