Abstract: The present invention relates to a device and a method for writing a plurality of transponders. A rotatable member is designed to ensure a relative rotation between a load and a release device for packaging material. A reading device for reading object information during the rotation of the rotatable member is arranged on the rotatable member. Various antennae (e.g., linear polarized RFID antenna, omnidirectional antenna, dipole antenna, etc.) are provided for reading RFID's. The RFID tags are read while they rotate close to the fixed position of the RFID reading device.

Abstract: A device for cooling material chunks or grains, especially material consisting of multiple components, which are subsequently fed to a device for crushing said material, preferably on a selective basis. An example is electronic waste material intended for recycling. According to the invention, the material is placed into a cooling tank in a discontinuous manner and in separate portions. In at least part of the cooling tank, the material is cooled by means of a liquefied gas having a low boiling point and then removed from the cooling tank in a discontinuous manner. The invention notably allows for the targeted setting of the optimal temperature for the selective crushing of the material in question while at the same time optimizing the required quantities of cooling gas and energy and minimizing both manual labor and processing time.

Abstract: The invention relates to a method for recycling electronic waste in the form of disassembled printed circuit boards from electronic devices, from which the components have not been removed, known as printed circuit boards. After removal of the batteries, mercury switches and PCB-containing capacitors, the printed circuit boards are mechanically precomminuted and the particles are cryogenically embrittled with liquid nitrogen and comminuted in a hammermill.