Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/28653
Title: Numerical prediction of the mean residence time of solid materials in a pilot-scale rotary kiln
Authors: HAELDERMANS, Tom 
LATAF, Amine 
VANROELEN, Giovanni 
SAMYN, Pieter 
VANDAMME, Dries 
CUYPERS, Ann 
VANREPPELEN, Kenny 
SCHREURS, Sonja 
Issue Date: 2019
Source: POWDER TECHNOLOGY, 354, p. 392-401
Abstract: Five models that predict the Mean Residence Time (MRT) of solids in a rotary kiln are tested on three materials and validated experimentally. Furthermore, the influence of the kiln rotational speed and incline on the MRT was investigated. Determination and modelling of the MRT in pilot-scale reactors (length/diameter = 10.5) without a discharge dam, has not been studied yet. The prediction of the MRT with existing models gave poor results, therefore adaptions were necessary. The Saeman's model that was corrected with a new boundary condition decreased the mean absolute error on the experimental results from 54.5% to 15.3%. While the empirically corrected models of Saeman, Sullivan, Chatterjee and U.S. geological survey predicted the solid's MRT with an error <10% for kiln inclinations <1°. It was concluded that the MRT and the kiln's rotation relate inversely proportional, while the kiln's inclination relates logarithmically to the MRT.
Notes: Haeldermans, T (reprint author), Agoralaan Gebouw D, B-3590 Diepenbeek, Belgium. tom.haeldermans@uhasselt.be
Keywords: Rotary kiln; Mean residence time; Solid materials; Numerical modelling
Document URI: http://hdl.handle.net/1942/28653
ISSN: 0032-5910
e-ISSN: 1873-328X
DOI: 10.1016/j.powtec.2019.06.008
ISI #: 000490625500039
Category: A1
Type: Journal Contribution
Validations: ecoom 2020
Appears in Collections:Research publications

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