Size Measurement of Particles

Abstract

The size distribution of particles is of importance to a wide variety of particulate systems in the chemical process industries. The compacting and sintering behavior of metallurgical powders, flow characteristics of granular materials, hiding power of paint pigments, and the combustion efficiency of coal and sprayed liquids all depend on particle size. The various means of data representation in particle size measurements are defined and sampling procedures are presented. Methods of size measurement ranging from the historical yet still useful sieving, through the use of modern instrumentation such as laser diffraction equipment and optical counters, are discussed.

Fruit Manufacturing

“…The proper characterization of food suspensions depends on the purposes for which the information is sought, because the total description is an enormous task (Trottier, 1997). Anyway, one or more of the following properties should be considered: size and size distribution, shape, number and size distribution of pores, morphology of the primary particles, surface area, state of agglomeration, and or chemical and phase composition.…”

“…The particle size determination by sedimentation is based on an equivalent spherical Diameter of a circle with the same perimeter as the projected particle Source: Trottier, 1997;Genovese and Lozano, 2000. diameter. The particle size determination by sedimentation is based on an equivalent spherical Diameter of a circle with the same perimeter as the projected particle Source: Trottier, 1997;Genovese and Lozano, 2000. diameter.…”