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Effect of particle size on direct compaction of urea fertilizer


Shamsudin, Intan Soraya and Anuar, Mohd Shamsul and Yusof, Yus Aniza and Mohd Hanif, Ahmad Husni and Mohd Tahir, Suraya (2014) Effect of particle size on direct compaction of urea fertilizer. Particulate Science and Technology, 32 (6). pp. 544-553. ISSN 0272-6351; ESSN: 1548-0046


The effect of particle size on compaction properties and characteristics of urea tablets manufactured from available urea granules (TG tablets) and ground urea powders (TP tablets) was investigated. The compaction properties, namely, plastic work, elastic work, friction work, and maximum ejection pressure were analyzed from the force-displacement profile of the compaction process. Five applied pressures ranging between 37.67 MPa and 188.35 MPa were used to compact the materials using a universal testing machine. Characteristics of the tablets tested were mechanical strength and the release of ammonium ion through dissolution test. The results demonstrated that TG tablets underwent high plastic work and elastic work but low friction work compared to the TP tablets. TG tablets released lower amount of ammonium ion compared to the TP tablets at almost all applied pressures, except at 75.34 MPa. This study provides a valuable data for evaluating the behavior of urea in the form of granules and powders during the compaction process as well as the suitability in choosing the form of raw material for the production of urea tablets.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Faculty of Engineering
DOI Number: https://doi.org/10.1080/02726351.2014.930942
Publisher: Taylor & Francis
Keywords: Ammonium ion release; Compaction properties; Tensile strength; Universal testing machine; Urea
Depositing User: Nabilah Mustapa
Date Deposited: 07 Sep 2015 10:29
Last Modified: 27 Jan 2016 01:26
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/02726351.2014.930942
URI: http://psasir.upm.edu.my/id/eprint/37287
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