Prills are formed from molten material by expelling hot melt through sets of orifices drilled through the     outer wall of a rotating centrifugal distributor on spaced horizontal planes and along lines which are related to the tangent, at the point of discharge, to the circle described by the distributor as it rotates through angles which differ in magnitude progressively from the upper to the lower portions of the distributor so that jets of hot melt are discharged from the distributor along sets of lines respectively slanted toward the direction of rotation at the uppermost plane of discharge and toward the other direction at the next lower plane of discharge, and at related speeds.

1971 Tuttle 3607993 Tuttle prilling bucket.pdf