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Urea is prilled by spraying urea droplets downwardly into a solidification zone where it is contacted with a substantially inert gas. Prills are directed into a collector by diverting their flow by directing a gas through a perforated, inverted cone or pyramid located at the bottom of and in communication with said zone.



 

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Download this file (1974 Mavrovic 3836611 Prilling.pdf)1974 Mavrovic 3836611 Prilling.pdf[ ]230 kB