Prills
From World Leader in Underground Blast Design Software
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Cellular particles of AN formed by spraying concentrated AN solution against a stream of air. In blasting, prills are small porous spheres of AN capable of absorbing more than 6% by weight of fuel oil. Blasting prills have a bulk density of 800 to 850 kg/cubic metres. Prills can come from long prilling towers which provide low density material or short cooling towers which can produce high density prills. Normal density or porous prills have densities ranging from .7 to .86 gm/cc whereas high density or non-porous prills can have densities up to 1.04 gm/cc.
External Links
Wikipedia Page: Prill