Acta Mechanica Slovaca 2025, 29(2):32-37 | DOI: 10.21496/ams.2025.020

Effect of Mechanical Activation Frequency on the Reactivity of Phosphate Rock Mixtures in an Impact Mill

Maksym Skydanenko1, Ruslan Ostroha1, *, Jozef Bocko2, Mykola Yukhymenko1, Iryna Vaskina3, Hynek Roubík4
1 Sumy State University, 116, Kharkivska St., 40007, Sumy, Ukraine
2 Technical University of Kosice, 1/9 Letna St., 040 01 Kosice, Slovak Republic
3 Poznan University of Life Sciences, 50, Wojska Polskiego St., 60-637, Poznan, Poland
4 Czech University of Life Sciences Prague, 129, Kamýcká St., 165 00, Prague, Czech Republic

This article presents the results of an experimental investigation into the mechanical activation of a phosphate rock mixture using a single-rotor impact activator. The key indicators used to assess the effectiveness of activation were the content of water-soluble P2O5 and the heat of dissolution of phosphorite in hydrochloric acid. The obtained graphical data illustrate a clear improvement in these parameters with increasing rotational speed and frequency of mechanical impacts on the material particles. Analysis of the results revealed that both the content of accessible P2O5 and the heat of phosphorite dissolution increased by approximately 15-20% when the intensity of mechanical activation was enhanced under the specified grinding conditions.

Keywords: phosphate rock, mechanical activation, impact grinding, sustainable agriculture, resource efficiency, green technology, fertilizer quality, heat of dissolution.

Received: July 4, 2025; Revised: July 31, 2025; Accepted: August 3, 2025; Published: June 10, 2025  Show citation

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Skydanenko, M., Ostroha, R., Bocko, J., Yukhymenko, M., Vaskina, I., & Roubík, H. (2025). Effect of Mechanical Activation Frequency on the Reactivity of Phosphate Rock Mixtures in an Impact Mill. Acta Mechanica Slovaca, 29(2), 32-37. doi: 10.21496/ams.2025.020
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