Prilling

Full definition of prilling

Noun

1. The solidification of droplets of molten material falling against an upward stream of air; used especially to agglomerate ammonium nitrate and urea for use as a fertilizer.
• 2005, Douglas K. Louie, Handbook of Sulfuric Acid Manufacturing, page 5-11In air prilling, molten sulphur is sprayed from the top of a tower against an upward flow of air. As the sulphur falls, the sulphur droplets break into small droplets and cools into prills.

Related terms

• prill
• prilling tower