Numerical and experimental investigations on new jar designs for high efficiency planetary ball milling
| Autor: | Paolo Scardi, Luca Gelisio, Nicola M. Pugno, Mirco D'Incau, M. Broseghini |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Diffraction
Materials science General Chemical Engineering Mechanical engineering Line profile analysis 02 engineering and technology Multibody system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Grinding Mechanics of Materials ddc:670 Ball (bearing) Mill Comminution 0210 nano-technology Ball mill |
| Zdroj: | Advanced powder technology 31(7), 2641-2649 (2020). doi:10.1016/j.apt.2020.04.027 |
| DOI: | 10.1016/j.apt.2020.04.027 |
| Popis: | Advanced powder technology 31(7), 2641 - 2649 (2020). doi:10.1016/j.apt.2020.04.027 The internal shape of planetary ball mill jars was modified to increase the efficiency of the milling process. Four new jar designs are presented, where obstacles on the surface of a traditional cylindrical jar modify the ratio of normal-to-tangential transferred mechanical action, thus improving the comminution of the mill charge and reducing the process time. Multibody dynamics simulations, validated by operando video recordings of the process, were employed to investigate modified ball motion regimes promoting the increase of the number of high-energy impacts. Moreover, experimental grinding of calcium fluoride powder was performed to assess the effect of milling time and jar-to-plate velocity ratio, through the evaluation of size and microstrain of the end product deduced from X-ray diffraction line profile analysis. Published by Elsevier, Amsterdam [u.a.] |
| Databáze: | OpenAIRE |
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