Modeling of Vertical Shaft Impact Crushers
Licentiate thesis, 2021
In this thesis, the use of vertical shaft impact crushers to crush aggregate rock to rounder particles is investigated. The main aim of this is to develop and further the understanding of the relationship between the machine and material properties with respect to the resulting crushed product in an effort to achieve an improved product. In order to gain a better understanding of the underlying mechanics of particle breakage, Discrete Element Method has been used to obtain particle collision energies. Several different product size distribution models have also been used to better predict the behavior of different crushers and feed sizes. To facilitate this, a framework to improve sites has been developed.
The resulting framework simulates existing VSI machines and optimizes the machine parameters with respect to the specified feed material and PSD to create sought products. The framework can also be used to optimize existing sites which increases the effectiveness in terms of minimizing energy usage and waste products.
Chalmers, Industrial and Materials Science, Product Development
Fit-for-Purpose VSI Modelling Framework for Process Simulation
Minerals,; Vol. 11(2021)
Prediction of Collision Energy in the VSI Crusher
Proceedings; European Symposium on Comminution and Classification 2015 September 7-10,; (2015)
Other conference contribution
Grunditz, S. Evertsson, CM. Hulthén, E. Bengtsson, M. The Effect of Rotor Tip Speed of a Vertical Shaft Impactor on the Collision Energy Spectrum
Development of Simulation Capability and Advanced Process Models for Rock Material, Ore, and Mineral Production
Swedish Mineral Processing Research Association, 2015-11-19 -- 2016-12-31.
VINNOVA, 2013-11-01 -- 2016-12-31.
Development Fund of the Swedish Construction Industry (SBUF), 2013-11-01 -- 2017-06-30.
Production Engineering, Human Work Science and Ergonomics
Other Environmental Engineering
Areas of Advance
Chalmers University of Technology
M Room Gamma
Opponent: Johannes Quist, Fraunhofer-Chalmers Centre, Sweden