“…In the literature, segregation studies in spouted beds have been carried out for cylindrical contactors and only in a qualitative way, with the aim either of determining cycle times and trajectories of the particles (Cook and Bridgwater, 1978; Robinson and Waldie, 1978;Piccinini et al, 1977; Uemaki et al, 1983;Kutluoglu et al, 1983;Ishikura et al, 1983; Cook and Bridgwater, 1985), or of obtaining information for designing the inlet and the outlet for continuous operation (Rovero and Piccinini, 1985;Piccinini, 1980;Piccinini and Cancelli, 1983).…”