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The potentialities and advantages of using rotating coiled columns for the field-flow fractionation of solid microparticles in the transverse field of centrifugal forces were considered. Some peculiarities of the particle behavior in a rotating coiled column were studied using the retention and separation of model latex and silica gel particles as an example. The effects of the column type, its rotation speed, the flow rate of the carrier liquid, and the inner diameter of the column were studied. It was shown that the weight of solid particles in the sample can be 20 μg and more. On the basis of the revealed regularities, the conditions for separating particles of irregular shapes (quartz sand 1–20 μm) were found.