The risk of segregation
Particle size may be the most important factor in causing this phenomenon. In general, the smaller and the more uniformly sized the ingredients are prepared, the more nearly they will approach random distribution during mixing. In many formulae, a decrease in particle size is necessary to attain a sufficient number of particles of an essential additive (vitamin, mineral, medication) for dispersion in each daily feed unit. This may require the particle size to be the diameter of dust, from 10 to 50 microns. Certain ingredients are unstable in finely divided form and likely to acquire an electrostatic charge. The concentration of particles on a charged surface, roughness of the mixed and stickiness of oily and...
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