Mechanistic and predictive population balance models for particle comminution size reduction mill

Yeswanth Sai Tanneru

Host Instituions

Technical University of Braunschweig [ 24 months ]
Société des Produits Nestlé S.A. [ 12 months ]

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Project Description

Predict the grinding result achieved by size reduction equipment such as roller refiners and impact mills at varying operating parameters by developing a new predictive PBM model based on a distinction between machine and material function.

Specific objectives are:
  1. Determination of stress energy and stress history from DEM (dry) and DEM-CFD (wet) modelling of milling;
  2. Characterization of material- and breakage-functions for different particle size classes using a custom-built two-roller particle tester and micro compression experiments;
  3. Coupling machine and material functions to develop a new predictive PBM model for milling.
Expected Results:
  1. Literature study and existing model evaluation; choice of methods;
  2. Determination of material- and breakage-functions for different particle size classes;
  3. Predictive process models for roller refiners and impact mills using PBM up-scaling;
  4. Validation of mill simulations with pilot-scale tests.

Research Output