Current Research
I am currently a postdoctoral reearch at McGill University in the Mineral Processing research group. My research focuses on applying gas dispersion measurements to industrial flotation operations, with an emphasis on developing practical techniques for measuring key hydrodynamic indicators.
By improving the way we measure and interpret flotation systems, this research aims to support better operating decisions, more efficient processes, and improved metallurgical performance.
New to the topic? Start here: What is gas dispersion?
I’m happy to connect about research, flotation, gas dispersion, or collaboration.
Publications
Shaping flotation bank kinetics using gas dispersion: a modelling approach
Mark R. Lepage, Kristian E. Waters
International Symposium on Flotation – 2026
Quantifying the frother potential of industrial flotation cell process water using dilution curves
Mark R. Lepage, Nina Morenon, Jeff Opoku, Kristian E. Waters
Minerals Engineering – 2026
Gas holdup and inferred water overflow measurements by conductivity sensors
Elmira Ravanasa, Mark R. Lepage, Kristian E. Waters
Canadian Metallurgical Quarterly – 2026
The role of measured froth zone water content in flotation froth stability and entrainment behaviour
Mark R. Lepage, Luke Visconti, Jeffery Opoku, Kristian E. Waters
Canadian Metallurgical Quarterly – 2025
Advancements in Gas Dispersion Audits for Flotation Process Optimization Using the C.H.E.P. Device
Olivier Gravel, Mark R. Lepage, Benoit Lavasseur
Canadian Mineral Processors Conference – 2025
Integrated portable gas dispersion device
Jeffery Opoku, Mark R. Lepage, Raymond Langlois, Kristian E. Waters
Canadian Metallurgical Quarterly – 2024
Conductivity measurements of the Froth Zone in Flotation
Mark R. Lepage
Ph.D. Thesis – McGill University – 2023
Investigation of particle motion in a dry separation fluidized bed using PEPT
Meng Zhou, Ozan Kökkılıç, Daryell Boucher, Mark R. Lepage, Thomas W. Leadbetter, Raymond Langlois, Kristian E. Waters
Minerals – 2023
Investigation of the effect of electrolytes on the breakaway of air bubbles at an underwater capillary using high-speed cinematography and passive acoustic techniques
Pengbo Chu, Ronghao Li, Mark R. Lepage, Kristian E. Waters
Minerals – 2022
Using top-of-froth conductivity to infer water overflow rate in a two-phase lab-scale flotation column
Mark R. Lepage, Cesar O. Gomez, Kristian E. Waters
Minerals – 2022
Vertical water content profiles of two-phase flotation froths
Mark R. Lepage, Luke Visconti, Odile Liboiron-Ladouceur, Kristian E. Waters
Minerals Engineering – 2020
Recovery of niobium minerals from ultra-fines by gravity and magnetic separation
Ronghao Li, Chris Marion, Mark R. Lepage, Niel A. Rowson, Ozan Kökkılıç, Kristian E. Waters
Physical Separations 19′ – 2019
Characterization and development of an electrical conductivity flow cell for the axial continuous phase fraction profiling of bulk multiphase flow
Mark R. Lepage, Luis Vinnett, Cesar O. Gomez, Odile Liboiron-Ladouceur, Kristian E. Waters
Measurement Science and Technology – 2019
Measuring flotation water overflow using a froth zone conductivity sensor and froth camera
Mark R. Lepage, Luis Vinnett, Cesar O. Gomez, Kristian E. Waters
25th World Mining Congress – 2018
Measuring flotation water overflow using an in-situ conductivity sensor
Mark R. Lepage, Kristian E. Waters
Topical Issues of Rational Use of Natural Resources – 2017
Effect of gas rate and impeller speed on bubble size in frother-electrolyte solutions
Joshua Sovechles, Mark R. Lepage, Bailee Johnson, Kristian E. Waters
Minerals Engineering – 2016
Component analysis of seawater and MIBC and their effects on flotation bubble size
Mark R. Lepage, Kristian E. Waters
Topical Issues of Rational Use of Natural Resources – 2016
Want to get in touch?
Let’s talk about what you’re building.