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Sources of urea dust in the air exhaust of a granulator:
•Fine dust coming from the crushing-process of coarse granules
•Evaporation/sublimation from urea melt (Isocyanicequilibrium) CO(NH2)2-> HNCO + NH3
•Atomization Sprayer losses, however minimal with Stamicarbon film spray nozzles
•Attrition

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