The effect of binder concentration in fluidized-bed granulation: Transition between wet and melt granulation

Bertin, Diego Esteban; Cotabarren, Ivana María; Moraga, Sussy Ximena Veliz; Piña, Juliana; Bucalá, Verónica

doi:10.1016/j.cherd.2017.11.046

Cited by 9 publications

(7 citation statements)

References 23 publications

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“…In work [16], the influence of the concentration of urea as a binder in the granulation process was investigated; the minimum possible concentration was experimentally selected to achieve the necessary quality of the finished product. The results were obtained specifically for urea as a binder and cannot be extended to granulation when organic matter is used as a binder.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the main regularities in the process of mineral fertilizer granule encapsulation in the fluidized bed apparatus

Ostroha

Yukhymenko

Bocko

et al. 2021

EEJET

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This paper has substantiated the expediency and prospects of obtaining organomineral fertilizers by encapsulating mineral granules with an organic suspension in fluidized bed apparatuses. An overview of existing approaches to the mathematical description of the kinetics of granule growth in granulation processes in fluidized bed apparatuses is presented. A mathematical model of the kinetics of the formation of a hard shell around granules in a fluidized bed has been built. It shows that the kinetics depend on the size of the retour particles, the specific flow rate of the suspension, the density of the suspension and granules, and the time of the process. Equations have been derived for determining the thickness of the hard shell and the specific flow rate of the suspension for individual granulation stages in a multi-stage granulator of the fluidized layer. Analytically, graphical dependences were built, which showed an increase in the thickness of the hard shell due to an increase in the specific flow rate of the suspension, the diameter of the retour particles, and the time of the encapsulation process. The equations make it possible to determine the rational regime and technological parameters of the encapsulation process in order to obtain a coating of the predefined thickness at the surface of the granules. This ensures that a quality product is obtained, with a granulometric composition in a narrower range of particle size. To obtain granules of 2.5–4 mm in size, it is necessary to carry out the process in three- or four-stage granulators of the fluidized bed at specific suspension consumption of (10–20)∙10-4 kg/(kg∙s.). It is shown that with uniform growing of granules with a constant increase in the thickness of the shell in multistage granulators, the suspension consumption decreases by 2‒3 times from the first stage to the subsequent ones. This approach reduces the operating and energy costs of the process.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the main regularities in the process of mineral fertilizer granule encapsulation in the fluidized bed apparatus

Ostroha

Yukhymenko

Bocko

et al. 2021

EEJET

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“…Binder viscosity and surface tension are the properties, which more influence the granulation process because the collision energy necessary to agglomerate particles depends on them [28][29][30][31]. In particular, a higher binder solution viscosity could lead to larger granule size and less needed Inside the Phenomenological Aspects of Wet Granulation: Role of Process Parameters http://dx.doi.org/10.5772/intechopen.79840 binder amount to start the granule growth in both high-shear [32,33] and fluid-bed [34] granulation processes.…”

Section: Effect Of Binder Propertiesmentioning

confidence: 99%

Inside the Phenomenological Aspects of Wet Granulation: Role of Process Parameters

Simone¹,

Caccavo²,

Dalmoro³

et al. 2018

Granularity in Materials Science

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Granulation is a size-enlargement process by which small particles are bonded, by means of various techniques, in coherent and stable masses (granules), in which the original particles are still identifiable. In wet granulation processes, the powder particles are aggregated through the use of a liquid phase called binder. The main purposes of sizeenlargement process of a powder or mixture of powders are to improve technological properties and/or to realize suitable forms of commercial products. A modern and rational approach in the production of granular structures with tailored features (in terms of size and size distribution, flowability, mechanical and release properties, etc.) requires a deep understanding of phenomena involved during granules formation. By this knowledge, suitable predictive tools can be developed with the aim to choose right process conditions to be used in developing new formulations by avoiding or reducing costs for new tests. In this chapter, after introductive notes on granulation process, the phenomenological aspects involved in the formation of the granules with respect to the main process parameters are presented by experimental demonstration. Possible mathematical approaches in the granulation process description are also presented and the one involving the population mass balances equations is detailed.

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“…The granulation process is the first step in producing the slow-release, coated fertilizer. The granulation process can be performed using several methods, the most used being a rotating pan granulator [7,8] or a fluidized bed granulator [9][10][11]. The rotating pan granulator is easier to use and more accessible to design for custom needs.…”

Section: Introductionmentioning

confidence: 99%

NPK Fertilizer Formulation on a Custom-Made Rotating Pan Granulator for Agricultural Applications

Faraon,

Neamțu,

Capră

et al. 2023

NeXT-Chem 2023

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The effect of binder concentration in fluidized-bed granulation: Transition between wet and melt granulation

Cited by 9 publications

References 23 publications

Determining the main regularities in the process of mineral fertilizer granule encapsulation in the fluidized bed apparatus

Determining the main regularities in the process of mineral fertilizer granule encapsulation in the fluidized bed apparatus

Inside the Phenomenological Aspects of Wet Granulation: Role of Process Parameters

NPK Fertilizer Formulation on a Custom-Made Rotating Pan Granulator for Agricultural Applications

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