Abstract
Understanding the segregation tendencies of particulate mixtures where homogeneity is a critical requirement—for example, in nuclear fuel manufacturing and pharmaceutical processing—is of great industrial interest. In spite of a considerable amount of research done on the segregation of binary mixtures, there is still no universally accepted technique for quantifying segregation. In this paper a method based on image analysis is proposed to quantify segregation of a vibrated heap. Three different systems made of a binary mixture of glass beads of two different sizes and densities (fine hollow and coarse solid glass beads) with different levels of cohesion (made cohesive by silanisation) were analysed, i.e. (i) both hollow and solid beads free‐flowing, showing a tendency to segregate, (ii) hollow beads cohesive and solids beads free‐flowing, showing a high level of segregation, (iii) solid beads cohesive and hollow beads free‐flowing, tending not to segregate. Using an image analysis technique, a segregati...
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