Sieving is a simple and widely used method to classify powder according to its physical size, the Sieve method includes a wide range of particle sizes. Micromesh screens arrange the aperture size in descending order. Different types of opening intervals are available. Sieving is executed by manual or machine motion, dry or wet, the main variables that affect the sieving results contained the size of the very fine particles, the shape of the particles, the time and method of agitation, the initial time charge of the sieve.
Due to the size limitations at the bottom, sieving, there is no suitable method to characterize the complete particle size distribution of the powder, but, together with other methods, it can serve as a means of pre-classifying the powder . Sieving is generally best suited for analyzing a powder containing a large size fraction. i.e. 50 µm.
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