POWDER PARTICLE SHAPE AND SIZE DIFFERENTIATION

Bulk means properties of particles depend upon the properties of individual particles, like size, density, shape, cohesive force, etc. Hence, the particle quality, based not only on the scale but also on the actual property, should be controlled. so as to regulate the particle size, many separation techniques are developed and extensively used to this point in powder industries [l]. Research into particle separation supported shape, however, is at an early stage, in spite of its significance in improving the standard of powder products PI* In the present article, the form separation techniques reported up to now are reviewed so as to check their separation mechanisms and features. Problems and future subjects in developing the techniques are discussed. Shape separation methods The difference within the dynamic behavior of particles may be utilized within the separation on the idea not only of shape but also of the opposite criteria. Since the dynamic behavior of particles depends on the form, size, density, etc., and a mixture thereof, particle separation supported by a specific single property is difficult generally. Hence, within the shape separation of particles, a dynamic characteristic predominantly full of the particle shape is employed while keeping the opposite factors unchanged. the form separation methods proposed thus far are often classified into four groups which make use of the difference in 1) the particle velocity on a tilted solid wall, 2) the time the particles desire labor under a mesh aperture, 3) their cohesive force to a solid wall, and 4) their settling velocity in liquid. within the following, the separation mechanism and features of assorted methods are going to be explained. Shape separation by tilted plate This method is one that is the most elementary and straightforward and lots of shape separation methods proposed to date belong to This category. As observed by Yamamoto et al. [3], Nakagawa et al. [4], and Furuuchi et al. [5], in this method particles tend to be separated per the flatness of the scene of the moving particle. The shape separation appears applicable particularly for round particles that roll on the plate but not for flat particles that slide on that [5]. particle velocity because of the particle shape. Hence, the plate is typically tilted by some degrees to forestall particles from sliding or jumping. The tilted rotating disk, the tilted rotating cylinder, and therefore the tilted vibrating trough are devised for utilization.