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Untitled - MendelNet 2013 - Mendelova zemědělská a lesnická ...

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MENDELNET <strong>2013</strong>GRANULOMETRIC STUDY OF DASA® 26/13 FERTILISERŠima T., Nozdrovický L., Krupička J., Dubeňová M., Koloman K.Department of Machines and Production Systems, Faculty of Engineering, SlovakUniversity of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovak RepublicE-mail: tomasko.sima@gmail.comABSTRACTEffectiveness of the spinning disc fertiliser spreaders is affected by the physical properties of thefertiliser. One of the most important factors is the fertiliser particle-size distribution which dependsupon the size of the fertiliser particles. The aim of the paper was evaluation of the particle-sizedistribution of the fertiliser separated at first in the vertical air flow by K-293 Laboratory screeningmachine with steeply increasing flow speed. The airflow speed was regulated by airflow volumefrom 70 to 130 m 3 .h -1 . Secondary separation was done by sieve screening of the samples by HaverEML digital plus Test Sieve Shaker. Sieves with square holes with dimensions 1 mm, 2 mm,3.15 mm, 5 and 10 mm were used. Fertiliser meets the requirements of the manufacturer for grainsizedistribution.Key words: fertilizer, particle, sorting, airflowAcknowledgments: This work was supported by Erasmus and Department of AgriculturalMachines, Faculty of Engineering, Czech University of Life Sciences Prague.882 | P age

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