Mechanochemical aspects in wet stirred media milling

Journal article
(Original article)


Publication Details

Author(s): Romeis S, Schmidt J, Peukert W
Journal: International Journal of Mineral Processing
Publisher: Elsevier B.V.
Publication year: 2016
Volume: 156
Pages range: 24-31
ISSN: 0301-7516
Language: English


Abstract


Wet comminution in stirred media mills is a frequently applied fully scalable top-down method towards the production of micron- and submicron particles. Despite the vast field of mechanochemistry which encompasses an increase in reactivity due to the effect of mechanical energy input, there is still no clear picture of the involved mechanisms. In ultra-fine wet grinding the situation is further complicated due to the presence of the solvent: reactions of the stressed solid with the surrounding liquid phase can occur. In this paper several aspects of mechanochemistry occurring in stirred media mills are outlined through suitable experiments. Main focus lies on the comprehensive product characterization and on the role of the liquid phase. It is shown that the liquid phase influences product properties like particle size, porosity, particle shape, structure, chemical composition and the molecular termination of the surface. An increase in the reactivity of ground solids is manifested by a significant increase in dissolution in the aqueous phase during processing in water. Altogether, the liquid dispersion medium which can act as solvent is thus introduced as a new process parameter in stirred media milling and offers new prospects for innovative product design by top-down approaches.



FAU Authors / FAU Editors

Peukert, Wolfgang Prof. Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Romeis, Stefan Dr.-Ing.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik
Schmidt, Jochen Dr.
Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik


Additional Organisation
Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden


How to cite

APA:
Romeis, S., Schmidt, J., & Peukert, W. (2016). Mechanochemical aspects in wet stirred media milling. International Journal of Mineral Processing, 156, 24-31. https://dx.doi.org/10.1016/j.minpro.2016.05.018

MLA:
Romeis, Stefan, Jochen Schmidt, and Wolfgang Peukert. "Mechanochemical aspects in wet stirred media milling." International Journal of Mineral Processing 156 (2016): 24-31.

BibTeX: 

Last updated on 2018-19-04 at 03:46