Optimisation of high shear granulation of multicomponent fertiliser using response surface methodology

Chirangano Mangwandi, Ahmad B. Albadarin, Ala'a H. Al-Muhtaseb, Stephen J. Allen, Gavin M. Walker

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

This work describes a novel method of producing multicomponent fertiliser granules using high shear granulation. The granulation process was optimised using the response surface methodology technique. The variables used in the optimisation process include granulation time, batch size, impeller speed and binder concentration. Granulation time, binder concentration and interaction between the batch size and granulation time were found to be the main factors affecting the granule median size. The product yield is mainly influenced by granulation time and binder concentration. The interaction between the impeller speed and batch size also have a significant influence on the product yield. Product yield (2-4. mm) of approximately 60% could be obtained with high sphericity and granule strength (>. 0.5. MPa). A low product recycle ratio of about 2:3 can be obtained at the optimised process conditions, compared to typical recycle rations of 6:1 which are obtained in typical fertiliser plants.

Original languageEnglish
Pages (from-to)142-150
Number of pages9
JournalPowder Technology
Volume238
DOIs
Publication statusPublished - Apr 2013

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Granulation
Fertilizers
Binders

Keywords

  • Granulation
  • High shear
  • Optimisation
  • Product yield
  • Strength

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Optimisation of high shear granulation of multicomponent fertiliser using response surface methodology. / Mangwandi, Chirangano; Albadarin, Ahmad B.; Al-Muhtaseb, Ala'a H.; Allen, Stephen J.; Walker, Gavin M.

In: Powder Technology, Vol. 238, 04.2013, p. 142-150.

Research output: Contribution to journalArticle

Mangwandi, Chirangano ; Albadarin, Ahmad B. ; Al-Muhtaseb, Ala'a H. ; Allen, Stephen J. ; Walker, Gavin M. / Optimisation of high shear granulation of multicomponent fertiliser using response surface methodology. In: Powder Technology. 2013 ; Vol. 238. pp. 142-150.
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