Computational modelling of particle-fluid dynamics in comminution and classification: a review. Issue 2 (2nd April 2020)

• Record Type: Journal Article
• Authors: Mangadoddy, Narasimha; Vakamalla, Teja Reddy; Kumar, Mayank; Mainza, Aubrey
• Is Part Of: Mineral processing and extractive metallurgy. Volume 129:Issue 2(2020)
• Page Start: 145
• Page End: 156
• Publication Date: 2020-04-02
• Subjects: Tumbling mill -- hydrocyclone -- DMC -- CFD-DEM -- multiphase -- turbulence -- flow field -- efficiency curve; Ore-dressing -- Periodicals; Metallurgy -- Periodicals; Metallurgy; Ore-dressing; Periodicals; 669
• DOI: 10.1080/25726641.2019.1708657
• Languages: English
• ISSNs: 2572-6641

Abstract

ABSTRACT: Comminution and classification are the two major unit operations involved in the processing of pure minerals from its ore rocks. In the current paper, an assessment is made on different numerical models used for the prediction of fluid and solid flow properties in tumbling mill, hydrocyclone and dense medium cyclone (DMC). A detailed discussion on the selection of suitable turbulence and multiphase models for the accurate prediction of flow field in hydrocyclone is made by comparing the predictions among and against experimental data. The additional requirements for accurate performance predictions at high feed solid content is elaborated. The drawbacks of DPM model and the usage of CFD-DEM coupling technique to predict the coal partition curve in DMC's has been elucidated. The discrepancies between DEM, CFD, one way and two way coupled CFD-DEM predicted mean flow field and particle dynamics against experimental measurements in tumbling mills also made in detail.