AT-2 apparatus is a testing device, which was the model of the rotor reclaimer (Fig.1. The properly profiled rotor arms allow to perform the elementary operations of the dry, mechanical reclamation process: rubbing, abrasion and crushing. 2 kg of the investigated spent sand is undergoing the reclamation process in this device. The rotor time and rotational speed are being changed according to the prepared program of experiments. In order to limit the sand heating effect, during the reclamation process, the outside bowl surface of the apparatus is cooled.
Fig. 1. General view of the rubbing device (testing apparatus) for the reclaimability investigations of various kinds of spent sands and their mixtures