Panagiotis Angelopoulos

Panagiotis Angelopoulos is an Assistant Professor of Mineral Processing and Beneficiation of Ores and Industrial Minerals at the School of Mining and Metallurgical Engineering of the National Technical University of Athens (NTUA). He received his Diploma in Mining and Metallurgical Engineering from NTUA in 2007 and his PhD from the same institution in 2013. His doctoral research was conducted at the Metallurgy Laboratory of NTUA as a fellow of the State Scholarships Foundation (IKY). In 2014, he carried out postdoctoral research at the same laboratory, also supported by an IKY fellowship. From 2024 until his appointment as Assistant Professor, he served as Laboratory and Teaching Staff (EDIP) in the Section of Metallurgy and Materials Science.

His research focuses on processes of mineral processing and beneficiation of ores and industrial minerals, as well as related auxiliary processes (such as drying, calcination, filtration, etc.). His work aims to reduce the environmental footprint and energy consumption of mineral processing operations, while improving their overall efficiency through a combination of experimental methods, mathematical modelling, and computational simulation. In a broader context, his research also explores strategies for the recovery of raw materials — including critical raw materials — from primary and secondary sources, such as mining and metallurgical residues as well as urban and industrial wastes, within the framework of the circular economy and the European raw materials strategy.

He has participated in more than 25 European and national research projects. In parallel, he has been involved as a principal researcher and scientific consultant in industrial projects related to the development and optimisation of mineral processing flowsheets and beneficiation circuits, as well as the design and installation of industrial processing equipment. His publication record includes more than 55 papers in international scientific journals and conference proceedings. He holds one international patent, and in 2013 he received the “Loukas Mousoulos” Award of the Academy of Athens for a published scientific paper on the mathematical modelling of perlite microspheres production. Since 2020, he has also served as a scientific and technical advisor to the Perlite Institute, an international organization representing more than 65 companies involved in perlite mining and processing worldwide.

https://orcid.org/0000-0003-0180-4476

1. Angelopoulos P, Yang X. S., Anastassakis G., Koukoulis N., Christakopoulos P., & Taxiarchou M. Multiscale Flotation Testing for the Recovery of REE-Bearing Fluorapatite from a Finnish Carbonatite Complex Deposit Using Conventional Collectors and Lignin Nanoparticles. Minerals. 2025, 15(6), 614. https://doi.org/10.3390/min15060614


2. Angelopoulos P, Anastassakis G, Taxiarchou M. Investigating the impact of grinding techniques on shape properties of ground volcanic glass: Insights from ball mill, vibrating pulverizer and rotor mill. Particulate Science and Technology. 2025, 1-13, https://doi.org/10.1080/02726351.2025.2494741


3. Angelopoulos P, Oustadakis P, Anastassakis G, Pissas M, Taxiarchou M. Iron recovery from bauxite residue (BR) through magnetic separation; Effect of endogenous properties and processing conditions. Minerals Engineering. 2024, 217, 108954, https://doi.org/10.1016/j.mineng.2024.108954


4. Angelopoulos P. Insights in the Physicochemical and Mechanical Properties and Characterization Methodology of Perlites. Minerals 2024, 14, 113. https://doi.org/10.3390/min14010113


5. Angelopoulos P, Peppas A, Taxiarchou M. Modelling the Thermal Treatment and Expansion of Mineral Microspheres (Perlite) in Electric Furnace Through Computational Fluid Dynamics (CFD): Effect of Process Conditions and Feed Characteristics, Mineral Processing and Extractive Metallurgy Review. 2023. DOI: 10.1080/08827508.2022.2161536


6. Angelopoulos P, Manic N, Jankovic B, Taxiarchou M. Thermal decomposition of volcanic glass (rhyolite): Kinetic deconvolution of dehydration and dehydroxylation process. Thermochimica Acta. 2022;707 (179082). https://doi.org/10.1016/j.tca.2021.179082


7. Angelopoulos P, Koukoulis N, Anastassakis GN, Taxiarchou M, Paspaliaris I. Selective Recovery of Graphite from Spent Potlining ({SPL}) by Froth Flotation. Journal of Sustainable Metallurgy. 2021; 7: 1589-1602. https://doi.org/10.1007/s40831-021-00453-0


8. Angelopoulos P, Manić N, Tsakiridis P, Taxiarchou M, Janković B. Dehydration of rhyolite: activation energy, water speciation and morphological investigation. Journal of Thermal Analysis and Calorimetry. 2020;142(1):395–407. https://doi.org/10.1007/s10973-020-10105-2


9. Angelopoulos P, Maliachova C, Papakonstantinou K, Taxiarchou M, Diplas S. Structural and physical characteristics of fine perlite expanded with a novel method in a vertical electric furnace. Mineral Processing and Extractive Metallurgy, Transactions of the Institutions of Mining and Metallurgy: Section C. 2016 Apr 2;125(2):71–80. https://doi.org/10.1080/03719553.2016.1156244


10. Angelopoulos P, Balomenos E, Taxiarchou M. Thin-Layer Modeling and Determination of Effective Moisture Diffusivity and Activation Energy for Drying of Red Mud from Filter Presses. Journal of Sustainable Metallurgy. 2016;2(4):344–52. https://doi.org/10.1007/s40831-016-0055-7


11. Angelopoulos P, Gerogiorgis DI, Paspaliaris I. Mathematical modeling and process simulation of perlite grain expansion in a vertical electrical furnace. Applied Mathematical Modeling. 2014;38(5–6):1799–822. https://doi.org/10.1016/j.apm.2013.09.019


12. Angelopoulos P, Gerogiorgis DI, Paspaliaris I. Model-Based Sensitivity Analysis and Experimental Investigation of Perlite Grain Expansion in a Vertical Electrical Furnace. Industrial and Engineering Chemistry Research. 2013 Dec 18;52(50):17953–75. https://doi.org/10.1021/ie401144r

Undergraduate Courses

• Mechanical Preparation and Processing of Minerals I (5th Sem.)


• Mechanical Preparation and Processing of Minerals ΙΙ (6th Sem.)


• Mineral Processing Plant Design (9th Sem.)


• Solid Waste Treatment, Materials Recycling (co-teaching, 9th Sem.)