Wet-granulation process: phenomenological analysis and process parameters optimization

Simone, Veronica De; Caccavo, Diego; Lamberti, Gaetano; D’Amore, Matteo; Barba, Anna Angela

doi:10.1016/j.powtec.2018.09.053

Cited by 42 publications

(8 citation statements)

References 30 publications

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“…Peat-free soil amendment from biomass ashes in a mixture with sapropel as a natural binder was elaborated by applying extrusion and rotary drum granulation resulting in two types of granules -extruded and spherical (Rodrigues et al, 2017;Vincevica-Gaile et al, 2019). Wet granulation was chosen as an appropriate method due to several advantages as it is a size-enlargement process applied in many industrial fields, such as pharmaceuticals, nutraceuticals, zootechnicals, to improve the flowability and compressibility properties of powders (De Simone et al, 2018). Screened by sieving (1 500 μm), biomass fly ashes were used for granulation together with homogenized sapropel, which was gradually admixed to gain the best consistency applicable for granulation.…”

Section: Methodology: Ash-sapropel Granulationmentioning

confidence: 99%

On the Way to Sustainable Peat-Free Soil Amendments

Vincevica-Gaile¹,

Stankeviča²,

Kļaviņš³

et al. 2021

SJA

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Increasing global population and urbanization demands enhanced food and feed crop production, but due to several reasons, the areas of fertile agricultural lands are reducing worldwide. The market of growing substrates, soil amendments, and improvers still is based on peat extraction and processing. Due to peat's fossil origin, it can be considered environmentally unfriendly and unsustainable. Seeking peat-substituting materials is of crucial importance on a global scale and may become a vitally significant assignment for future generations. The necessity for peat-free soil amendments is also directed by the targets of circular economy and environmental sustainability goals, leading to reducing or abandoning the use of fossil resources and paying attention to waste utilization as secondary raw material. This paper aims to discuss general features of peat-free soil amendments as well as provide efforts into the use of secondary raw materials such as biomass ashes for the elaboration of peat-free soil-improving products. As a case example, may serve a description of the peat-free product made by rotary drum granulation from biomass fly ashes (energy production waste) and local freshwater sediments in a mass ratio mixture of 67:100, optimally applicable for soil improvement at a rate of 50 g L -1 . Besides, regional opportunities in Indonesia and Latvia are referred. It was concluded that peat-free soil amendment elaboration can be better implemented on a regional scale after assessing agricultural needs, soil specifics, and available raw material variety applicable as ingredients in soil-improving products.

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Section: Methodology: Ash-sapropel Granulationmentioning

confidence: 99%

On the Way to Sustainable Peat-Free Soil Amendments

Vincevica-Gaile¹,

Stankeviča²,

Kļaviņš³

et al. 2021

SJA

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“…The use of wet granulation technology to produce brake friction materials is limited [68,69], despite the fact that it can improve the tribological (reduce the abrasion of rubbing surfaces) and physical (increase porosity) properties of the friction materials [70]. The wet granulation technique consists of mixing, spraying of the binder (liquide phase) into the powder, drying of the wet granular mass (with a drying oven), and screening (using a grading sieve).…”

Section: Global Process Of Manufacturingmentioning

confidence: 99%

Braking performance of friction materials: a review of manufacturing process impact and future trends

Hentati

Makni

Elleuch

2023

Tribology - Materials, Surfaces & Interfaces

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The brake friction materials are composite materials with multi-ingredient systems which induce a complex formulation. This complexity is also the result of the manufacturing parameters effects, such as mixture sequence and duration, moulding pressure, time, temperature and heat treatment time. Therefore, heterogeneity is induced as well in the characteristics (microstructure, density, etc.) as in the behaviour (mechanical, tribological, dynamic, etc.). Despite the study of the effect of manufacturing parameters on the friction material behaviour, the synergistic effect between the heterogeneity and the braking performance is still not well reported. This paper strives to eliminate the cloud of uncertainty of the role of manufacturing parameters on the friction material performances by providing most used process of elaboration, and most required properties for contemporary brake system. Innovation in brake discs and pad manufacturing by optimized algorithms, prediction approaches, and 3D printing process is presented as innovative methods to improve braking materials performance.

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“…In light of that, studies on the evolution of particle size distribution (PSD) during the granulation process were performed by using an ad hoc dynamic image analysis (DIA) device, based on the free falling particle scheme of particles per unit of volume. It resulted evident that nucleation, agglomeration, and breakage phenomena occur simultaneously during all the process time [47], phenomena that therefore must be taken into account in the modeling approach.…”

Section: Inside Wet Granulation Runs: Experimental Evidencesmentioning

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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Wet-granulation process: phenomenological analysis and process parameters optimization

Cited by 42 publications

References 30 publications

On the Way to Sustainable Peat-Free Soil Amendments

On the Way to Sustainable Peat-Free Soil Amendments

Braking performance of friction materials: a review of manufacturing process impact and future trends

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

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