Doctoral Thesis

Ben Said, B., 2025. Mechanistic insights and process-level optimization and upscaling of novel reagents in flotation: colloidal silica as a calcite depressant in the froth flotation of semi-soluble salt-type minerals. Clausthal-Zellerfeld. https://doi.org/10.21268/20251222-0

Patents

• B. Ben Said, M. Rudolph: Method and device for separating particles with a particle size < 500 µm from the froth phase of a particle dispersion [orig.: “Verfahren und Vorrichtung zur Abtrennung von Partikeln mit einer Partikelgröße < 500 µm aus der Schaumphase einer Partikeldispersion”], German patent application DE 10 2025 118 050.4, filed 13.05.2025, German Patent and Trade Mark Office (DPMA); applicant: Helmholtz-Zentrum Dresden-Rossendorf e.V. 

International Journals

• V. P. Tholan, S. Heitkam, M. Ziauddin, B. Ben Said, N. Ericson, M. Rudolph, K. Eckert: Reverse flotation of apatite from iron ore in a REFLUX™ flotation cell, Minerals Engineering, 237, 109968, 2026, doi.org/10.1016/j.mineng.2025.109968
• B. Ben Said, S. Patil, M. Rudolph, D. Goldmann, L. Pereira: From Pulp to Froth: Decoding the Role of Nanoparticle Colloidal Silica in Scheelite Flotation as a Calcite Depressant, Minerals, 15(8), 834, 2025, doi.org/10.3390/min15080834 (Editor’s Choice Article)
• B. Ben Said, M. Rudolph, D. Goldmann, L. Pereira: Upscaling and optimization of reagents systems in froth flotation: A DoE and numerical-optimization based methodology, Minerals Engineering, 228, 109308, 2025, doi.org/10.1016/j.mineng.2025.109308
• B. Ben Said, M. Rudolph, D. Ebert, D. Goldmann, L. Pereira: Nanoparticle depressants in froth flotation – The effect of colloidal silica with different size and surface modifications on the selective separation of semi-soluble salt type minerals, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 690, 133697, 2024, doi.org/10.1016/j.colsurfa.2024.133697
• B. Lewandowski, B. Ben Said, M. Ulbricht, G. Krekel: Application of Raman spectroscopy to the flotation process of fluorite, Minerals Engineering, 135, pp. 129–138, 2019, doi.org/10.1016/j.mineng.2019.02.038

International Conferences

• B. Ben Said: Upscaling and optimization of reagent systems in froth flotation: a DoE and numerical-optimization-based methodology, XXXI International Mineral Processing Congress (IMPC 2024), Washington, D.C., USA, 01.10.2024 
• B. Ben Said: Upscaling and optimizing reagent systems in flotation processes – a DoE and numerical optimization-based methodology, Flotation ’23, Cape Town, South Africa, 08.11.2023 
• B. Ben Said: Nanoparticle depressants – the effect of colloidal silica in the froth flotation of semi-soluble salt type minerals, Flotation ’23, Cape Town, South Africa, 08.11.2023 
• B. Ben Said: How can colloidal silica improve the flotation of calcium minerals?, PARTEC 2023 – International Congress on Particle Technology, Nuremberg, Germany, 26.09.2023 
• B. Ben Said: An approach for the optimization and upscaling of reagent systems in flotation processes, 14th European Congress of Chemical Engineering (ECCE 2023), Berlin, Germany, 21.09.2023 
• B. Ben Said: Nanoparticle depressants in fine particle separation, 9th World Congress on Particle Technology (WCPT9), Madrid, Spain, 20.09.2022 
• B. Ben Said, L. Pereira, T. Saeed, D. H. Hoang, N. Kupka, R. Tolosana-Delgado, M. Rudolph: Development of a user-friendly R Platform for Optimizing Mineral Processing, International Mineral Processing Congress Asia-Pacific (IMPC Asia-Pacific 2022), Melbourne, Australia (online), 24.08.2022 (oral presentation and conference paper), hifgeomet.shinyapps.io/Optimization_Tool/

National Conferences

• B. Ben Said: From microflotation to industry – a methodology for upscaling and optimization of reagent systems in froth flotation [orig.: “Von Mikroflotation zur Industrie – Eine Methodik für Upscaling und Optimierung von Reagenziensystemen in der Schaumflotation”], Conference “Aufbereitung und Recycling”, Freiberg, Germany, 17.11.2023 
• B. Ben Said: Use of the FTC mini pilot plant for the optimization of flotation processes – advantages and limitations [orig.: “Einsatz der FTC Mini-Pilotanlage zur Optimierung von Flotationsprozessen – Vorteile und Grenzen”], Conference “Aufbereitung und Recycling”, Freiberg, Germany, 11.11.2022 
• B. Ben Said: Colloidal Silica as a Depressant in Calcium Mineral Flotation, ProcessNet Annual Meeting of the Expert Group on Comminution and Classification (GFSP), Frankfurt am Main, Germany (online), 17.02.2022