Importance

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Abstract

Granulated particles by making use an initial feedstock having particle size of -150 mesh and 90% or greater particle size of 200 mesh. The feedstock may be contacted in a pan granulator which includes a minor amount of nucleating material of about -35 mesh. Binder is introduced into the pan granulator to progressively layer the feedstock material onto the nucleating to form a final granular fertilizer or other product in any desired size distribution. The method by which the granules are formed is interruptible and is particularly useful for forming granules having a plurality of layers of differing material. The granules, by formation with dust feedstock and in the absence of seed material, lack a core and therefore include the maximum amount of tightly packed feedstock. This results in substantial increases in the break strength of the granules with uniform homogeneous cross-sections. Such granules overcome the limitations associated with existing granules to provide an industrially valuable product.

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First Claim