An approach to measuring and modelling the residence time distribution of cement clinker in vertical roller mills

Kianoush Barani, M. R. Azadi, Rasoul Fatahi

Research output: Contribution to journalArticlepeer-review

Abstract

This paper presents an experimental approach to measure and model the residence time distribution of vertical roller mill in cement clinker grinding circuit. The dispersion model, tank-in-series model, and a perfect mixer with a bypass model were employed to describe the residence time distribution. A perfect mixer with a bypass model was found to a tolerable fitting to describe the RTD of solids in VRM. The result shows 43% of the fine fraction of fresh feed as an existing bypass without spending adequate time within the VRM. The result also shows that the grinding occurs in 54% of the table surface and about 46% of the table surface can be called the dead zone.

Original languageEnglish
Pages (from-to)158-165
Number of pages8
JournalMineral Processing and Extractive Metallurgy: Transactions of the Institute of Mining and Metallurgy
Volume131
Issue number2
Early online date17 Mar 2021
DOIs
Publication statusPublished - 2022

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