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Investigation of centrifugal reclaimer's work by means of high-speed digital camera recordings

Łucarz M.

Archives of Foundry Engineering

2008

Vol. 8, iss. 1

92-96

The experimentally verified theoretical model of the mechanical reclamation treatment of used sands in a centrifugal reclamation unit is presented in the paper. The formula for calculation of the single sand grain trajectory on the surface of the disk in a centrifugal reclamation is given. The calculated path of the sand grain moving on the disk surface enabled determination the work of friction force acting on the single sand grain. The calculated trajectory of the particle was compared with the one recorded by the camera at the same disc rotational speed. High-speed camera recordings of the sand grains movement on the disk surface in a wide range of testing conditions are presented in the paper. The influence of different rotational speeds and grain shapes affecting the final sand grain trajectory was experimentally analysed and the discrepancies existing between the theoretical and real trajectory of the particle were explained, which verified the mathematical model of the mechanical reclamation treatment of used sands in a centrifugal reclamation unit.