Naslov
Fluid-bed granulation of dolomite

Autori
Žižek, Krunoslav ; Hraste, Marin ; Gomzi, Zoran

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Chemical Engineering Transactions Volume 17, Part 2 / Pierucci, Sauro - Rim : Associazone Italiana di Ingegnaria Chimica, 2009, 801-806

ISBN
978-88-95608-01-3

Skup
ICheaP-9, The ninth International Conference on Chemical and Process Engineering

Mjesto i datum
Rim, Italija, 10.05.2009. - 13.05.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Fluid-bed granulation; Dolomite; Granule size distribution; Population balance

Sažetak
Agrochemical substance, dolomite was formulated in fluid-bed granulation process. In this work, the effect of the liquid-to-solid ratio and rate of binder addition on the granule size distribution (GSD) have been investigated. Mechanistic approach to process integrates application of a discretised population balance model (Hounslow et al., 1988) and the size independent kernel model (Kapur and Fuerstenau, 1969). Integral method was used for coalescence rate parameter estimation. Dolomite powder was granulated in a laboratory, batch process unit with a three component binder formulation, water-molasses-polyvinylpyrrolidone. Experiments were performed in a top-spray mode. GSD was determined by sieving and displayed as a normalised mass density function. Series of experiments were repeated at the identical process conditions in order to investigate reproducibility of the granulation experiments. Derived monomodal GSD's are evidently influenced by liquid-to-solid ratio and rate of binder addition. Model predictions using the size independent kernel indicate the presence of the preferential coalescence growth regime. Generated kinetic considerations represent a valuable step towards comprehensive perspective of dolomite granulation.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA