Rahmanian, N, Naderi, S, Supuk, E et al. (2 more authors) (2015) Urea finishing process: Prilling versus granulation. In: Procedia Engineering. 7th World Congress on Particle Technology (WCPT7), 19-22 May 2014, Beijing, China. Elsevier , pp. 174-181.
Abstract
Solid urea is the largest nitrogen fertilizer product which is produced in two forms of granules and prills. Although the chemical properties of both prills and granules remain similar, their different physical and mechanical properties are distinguishable and make them suitable for different application either as fertilizer or raw materials for chemical industry. The objective of this work is to analyses physical and mechanical properties of urea granules produced in two different plants in Malaysia using fluidized bed process and compare them with the imported urea prills to the country; hence make a process-product relationship for urea finishing processes. Results of size distribution of the samples show that the most of the granules fall in the size range between 2.82 and 3.06 mm, whereas the prills size is around 1.65 mm. Strength measurement using side crushing test also shows that the prills with the average failure load of 3.80 N remain significantly weaker than the granules with failure load of 10-17 N. Strength distribution of the particles also shows that a more uniform strength distribution is observed for the prills than the granules. It is concluded that the urea prilling process is the finishing process which produces the weaker and the more uniform size and strength of the particles than the fluidized-bed granulation process.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Urea; Prills; Granules; Prilling; Strength |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Particle Science and Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 May 2016 14:13 |
Last Modified: | 11 Apr 2018 13:27 |
Published Version: | http://dx.doi.org/10.1016/j.proeng.2015.01.122 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.proeng.2015.01.122 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:97580 |