Special Issue "Applicable and Industrial Developments in Froth Flotation"

A special issue of J (ISSN 2571-8800). This special issue belongs to the section "Earth Sciences".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 2459

Special Issue Editors

Independent scholar, Am Apostelhof 7A, 50226 Frechen, North Rhine-Westphalia, Germany
Interests: mineral processing; comminution and classification; surface chemistry; froth flotation; particle–bubble interactions and pre-treatment techniques
Special Issues, Collections and Topics in MDPI journals
Minerals and Metallurgical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
Interests: mineral processing; flotation; surface chemistry; rare earth processing; coal preparation; graphite processing; leaching; modeling; neural network; random forest
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

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, ImhoflotTM, flash, fluidized bed, HydroFloatTM, 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.


Prof. Dr. Saeed Chehreh Chelgani
Dr. Ahmad Hassanzadeh
Guest Editors

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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

Published Papers (1 paper)

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11 pages, 2505 KiB  
The Use of Radioactive Tracers to Detect and Correct Feed Flowrate Imbalances in Parallel Flotation Banks
J 2022, 5(2), 287-297; https://doi.org/10.3390/j5020020 - 12 Jun 2022
Viewed by 1629
This work presents the application of radioactive tracers to detect and correct feed flowrate imbalances in parallel rougher flotation banks. Several surveys were conducted at Minera Los Pelambres concentrator, in banks consisting of 250 m3 mechanical flotation cells. The feed pulp distribution [...] Read more.
This work presents the application of radioactive tracers to detect and correct feed flowrate imbalances in parallel rougher flotation banks. Several surveys were conducted at Minera Los Pelambres concentrator, in banks consisting of 250 m3 mechanical flotation cells. The feed pulp distribution was estimated from the mean residence times, which were obtained from residence time distribution measurements. The tracer was injected in the feed distributor and the inlet and outlet tracer signals of cells 1 and 2 were measured by on-stream sensors. The baseline condition for the pulp distribution was defined by the valve settings in the feed distributor, which led to an unbalanced condition for two parallel rougher banks, with 34% of the pulp being fed to bank A and 66% to bank B. New valve configurations were evaluated, with a fraction of the feed being directed to the rougher bank C, which was not initially fed from the same distributor. The feed distribution was finally balanced with 49% of the pulp being fed to bank A versus 51% to bank B. Thus, the radioactive traces proved to be a powerful tool to industrially detect and improve feed distributions in parallel flotation circuits. Full article
(This article belongs to the Special Issue Applicable and Industrial Developments in Froth Flotation)
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