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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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Numerical prediction of the mean residence time of solid materials n a pilot-scale rotary kiln.pdf Restricted Access | Published version | 1.31 MB | Adobe PDF | View/Open Request a copy |
Manuscript_resubmission_ServerUHasselt.pdf Restricted Access | Peer-reviewed author version | 1.32 MB | Adobe PDF | View/Open Request a copy |
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