Abstract: A roller press comprising including a roller face defining a plurality of individual reliefs shaped and sized to compress feed material into a plurality of discrete briquettes, each of the individual reliefs defining a quadrilateral shaped depression having rounded corners to reduce stress concentrations in the resulting briquettes, wherein a pair of leading edge rounded corners are defined by a first radius and a pair of trailing edge rounded corners are defined by a second radius, the first radius being smaller than the second radius.

Abstract: Coatings and additives including a fatty acid or salt of fatty acid for application to granules. The coatings or additives can be applied to granules of, for example, fertilizer or animal feed. The fatty acid can be stearic acid, another saturated fatty acid, a salt of fatty acid such as sodium stearate, or combinations thereof, and can optionally include a carrier fluid. Preferably, the coating or flow additive is animal feed-grade certified to be used for products incorporated into food or animal feed as a nutrient supplement.