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The impact of structural and operational parameters of the centrifugal disc spreader on the spatial distribution

(in lingua inglese)

Mineral fertilizers used in tests (urea, ammonium sulfate, nitrochalk) differed significantly, bulk density, mass density and size grading. The ammonium sulfate contained up to 52.50% of powdery fractions. The specified value is more than 1.7 thousand times greater in comparison with the content of nitrochalk powdery fractions. The content of powdery fraction in urea was 10.35%. The highest bulk density (1.029 kg·dm-3) and mass density (1.800 kg·dm-3) was observed for nitochalk. The smallest density was observed for urea, which represented approximately 74% of nitochalk density (comparison within the same category). Bulk density and mass density of ammonium sulfate accounted for around 99% of the density of nitrochalk.

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Fonte: Articolo Agriculture and Agricultural Science Procedia, 2015
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