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Wyszukujesz frazę "Opaliński, Ireneusz" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Prospective Application of Response Surface Methodology for Predicting High-Energy Mixing Process Conditions towards Fine Powders Flow Improvement
Autorzy:
Leś, Karolina
Opaliński, Ireneusz
Powiązania:
https://bibliotekanauki.pl/articles/2024154.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
dry coating
powder flowability
high energy mixing
planetary ball mill
response surface methodology
powlekanie na sucho
sypkość proszku
mieszanie wysokoenergetyczne
planetarny młyn kulowy
Opis:
Planetary ball mill was proposed as an intensive high-energy mixer to obtain flowability improvement of industrially exploited, cohesive and finely comminuted powders via dry coating. Response surface methodology (RSM) coupled with central composite rotatable design (CCRD) was applied as an effective method for the prediction of high-energy mixing conditions. The use of this procedure allows identifying relatively narrow ranges of high-energy mixing parameters (rotating speed of planetary ball mill and mixing time) and the amount of additives used (nanosilica and isopropyl alcohol) providing substantial improvement of the flowability of Aluminium hydroxide (Apyral) and Calcium carbonate powders. In order to find the optimal values of the process parameters, enabling to obtain the lowest values of flowability indices (angle of repose, compressibility index), the desirability function approach was applied. The obtained results may be a basis for developing a general routine allowing mixing parameters to be successfully predicted regarding some physical properties of powders only with no experiments needed.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 1; 134-143
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on Moisture Effects on Powder Flow and Mechanochemical Improvement of Powder Flowability
Autorzy:
Opaliński, Ireneusz
Chutkowski, Marcin
Stasiak, Mateusz
Leś, Karolina
Olechowski, Marcin
Przywara, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2023857.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
powder flow
moisture content
mechanochemistry
DEM
Opis:
Recent findings on some unsolved powder rheology problems and new challenges regarding mechanochemical powder processing and flow modelling are presented. There is remarkable difference in rheology when processing moist powders in static or dynamic conditions. Despite of regular trends of shear stress changes with humidity found in the both cases, some exceptions revealed the significant impact of particles size and their hygroscopic nature as example. Mechanochemical methods of high-energy interactive mixing of highly cohesive powders doped with nano-sized solid admixture enabled their flowability to be improved considerably. Using statistical approach, more general routine is proposed that allow the optimal mixing parameters to be reliably predicted with limited number of experiments needed. Ability to flow of some hygroscopic powders was examined with DEM method and extreme sensitivity of model output to input particle properties was found. The common DEM routine towards powder flow prediction is therefore suggested to be replaced with approach featuring in using DEM method to identify some unknown powder flow factors.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 2; 228-246
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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