Dear Colleagues,

Process engineers annually treat thousands of million tonnes of primary and secondary raw materials with conventional ore-dressing processes involving several back-to-back steps. Froth flotation is undoubtedly the key process that relies upon the physicochemical differences of mineral surface properties. However, after more than a century, various aspects of this complex separation technique have not been discovered yet. This Special Issue aims to highlight the recent industrial and applicable academic elaborations in the flotation of metallic and non-metallic minerals. The current Special Issue will mainly focus on key findings for the serious challenges that froth flotation currently faces, such as:

• Impact of the polymineralization of deposits, their characterization issues, and process mineralogies on separation performance;
• Optimization of operating properties via advanced, efficient, and cost-effective techniques;
• Novel perspectives in designing flotation circuits, machinery, and the minimization of energy usage;
• Developments in the practical treatments of extremely coarse and fine particles using conventional cells, flotation columns, and Jameson, Imhoflot^TM, flash, fluidized bed, HydroFloat^TM, oscillating grid, and Reflux flotation cells;
• Appropriate selection of typical and new chemical reagent regimes and assessment of their environmental impacts on downstream processes;
• Role of fresh and saline water properties in different stages of flotation systems, with a particular focus on solution chemistry;
• Applicability of practical and first-principle flotation kinetic models and their scale-up in industrial cells;
• Individual and coupled numerical modeling approaches and their applications to full-scale cells;
• Impact of pre-treatment and pre-concentration techniques on the floatability of precious and gangue minerals.

This Special Issue will compile innovative outcomes for research and technology developments in advanced mineral processing. We cordially invite scientists to share their achievements regarding advances in froth flotation.

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• process mineralogy
• flotation and surface chemistry
• circuit designs
• process optimization
• environmentally friendly surfactants
• fine–coarse flotation
• water properties
• flotation kinetics modeling
• simulation and digitalization
• machine learning
• froth analyses