Vergleich zweier Übergabeeinrichtungen in Bezug auf Partikelbruch

Translated title of the contribution: Comparison of two transfer systems with regard to particle breakage

Philipp Wagner

    Research output: ThesisMaster's Thesis


    During transport of iron ore sinter from the sinter plant to the blast furnace a long conveyor track with multiple material handling points has to be passed. Each transfer point means additional stress introduced to the sinter and thus increases particle breakage. If the resulting particles are too small, they are sorted out as return fines and fed back into the cost-intensive sintering process. In this thesis two different types of transfer systems are compared regarding their particle damaging effects, one common chute and a dynamic chute. For both tests the transfer systems are installed in a conveyor track and DE simulations are conducted. An additional objective is to optimize an already existing simulation and to apply it to another grain size. For the evaluation of the simulations, it is necessary to determine the energy levels at which the particles tend to break. Therewith, an assessment of the particle breakage behavior can be achieved. Therefore, sinter particles are shot against a steel plate with a specific velocity and the resulting fragments are analyzed subsequently. The optimized DE-simulations are conducted considering the particle size distribution, the estimated young’s modulus for iron ore sinter as well as a combination of both. Then, a comparison to the given simulation results and the tests is conducted. By the tests as well as the DE-simulations, it was shown that the material handling via the dynamic chute offers an improvement in particle breakage behavior. In addition, the amount of return fines could be reduced by almost 50%. In the simulations, the variant with adjusted Young’s modulus achieved a slight improvement compared to the given simulations. On the other hand, no improvement could be observed by the introduction of a particle size distribution to the simulation model. However, adapting the simulation to a smaller grain size yielded higher deviations from the test. It is assumed, that this deviation is due to insufficient data from the breakage tests at low energy levels.
    Translated title of the contributionComparison of two transfer systems with regard to particle breakage
    Original languageGerman
    Awarding Institution
    • Montanuniversität
    • Sifferlinger, Nikolaus August, Supervisor (internal)
    • Prenner, Michael, Co-Supervisor (internal)
    • Denzel, Michael, Co-Supervisor (internal)
    Award date8 Apr 2022
    Publication statusPublished - 2022

    Bibliographical note

    no embargo


    • Discrete Element Method
    • transfer chute
    • particle breakage
    • blast furnace sinter

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