Selective flotation of carbonate minerals
This study explores the selective flotation of carbonate minerals-dolomite, magnesite, and calcite using amino acid-based single- and double-headed collectors. The separation efficiency was evaluated using microflotation experiments, ζ potential measurements, UV–Vis spectroscopy, FTIR spectroscopy,...
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Elsevier
2025-07-01
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| Series: | JCIS Open |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666934X25000108 |
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| author | Manas Barai Tanmay Dutta Anuttam Patra |
| author_facet | Manas Barai Tanmay Dutta Anuttam Patra |
| author_sort | Manas Barai |
| collection | DOAJ |
| description | This study explores the selective flotation of carbonate minerals-dolomite, magnesite, and calcite using amino acid-based single- and double-headed collectors. The separation efficiency was evaluated using microflotation experiments, ζ potential measurements, UV–Vis spectroscopy, FTIR spectroscopy, and molecular modelling. The study aimed to understand how the molecular architecture of collectors influences their adsorption behaviour on mineral surfaces, leading to selective flotation.Flotation recoveries were measured at both natural and pH 10.5 conditions. The monocarboxylate collector (C12GlyNa) demonstrated high but non-selective recovery across all three minerals. In contrast, the double-headed collector, disodium N-dodecyl aminomalonate (C12MalNa2), exhibited strong selectivity, particularly for magnesite, due to optimal geometric matching between its head groups and the Mg-Mg atomic distances on the mineral surface. The amount of collector adsorbed was determined by UV–Vis analysis, while FTIR confirmed surface adsorption through characteristic alkyl stretching bands. ζ potential measurements supported these findings, showing that increased adsorption led to greater negative charge development on mineral surfaces. Molecular modelling further revealed that selective adsorption occurs when the collector's head group spacing aligns with metal-metal distances on the mineral surface, enabling effective electrostatic interactions.These results highlight the potential for designing tailored collectors based on molecular recognition principles, offering a pathway for more efficient and selective flotation of carbonate minerals. |
| format | Article |
| id | doaj-art-d5b8b6952d314933a47be36d08699313 |
| institution | DOAJ |
| issn | 2666-934X |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | JCIS Open |
| spelling | doaj-art-d5b8b6952d314933a47be36d086993132025-08-20T02:39:40ZengElsevierJCIS Open2666-934X2025-07-011810013710.1016/j.jciso.2025.100137Selective flotation of carbonate mineralsManas Barai0Tanmay Dutta1Anuttam Patra2Chemistry of Interfaces Group, Luleå University of Technology, SE-97187, Luleå, Sweden; Department of Chemistry, School of Engineering, Dayananda Sagar University, Devarakaggalahalli, Harohalli Kanakapura Road, Dt, Ramanagara, Karnataka, 562112, IndiaChemistry of Interfaces Group, Luleå University of Technology, SE-97187, Luleå, SwedenChemistry of Interfaces Group, Luleå University of Technology, SE-97187, Luleå, Sweden; Corresponding author. Chemistry of Interfaces Group, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-97187, Luleå, Sweden.This study explores the selective flotation of carbonate minerals-dolomite, magnesite, and calcite using amino acid-based single- and double-headed collectors. The separation efficiency was evaluated using microflotation experiments, ζ potential measurements, UV–Vis spectroscopy, FTIR spectroscopy, and molecular modelling. The study aimed to understand how the molecular architecture of collectors influences their adsorption behaviour on mineral surfaces, leading to selective flotation.Flotation recoveries were measured at both natural and pH 10.5 conditions. The monocarboxylate collector (C12GlyNa) demonstrated high but non-selective recovery across all three minerals. In contrast, the double-headed collector, disodium N-dodecyl aminomalonate (C12MalNa2), exhibited strong selectivity, particularly for magnesite, due to optimal geometric matching between its head groups and the Mg-Mg atomic distances on the mineral surface. The amount of collector adsorbed was determined by UV–Vis analysis, while FTIR confirmed surface adsorption through characteristic alkyl stretching bands. ζ potential measurements supported these findings, showing that increased adsorption led to greater negative charge development on mineral surfaces. Molecular modelling further revealed that selective adsorption occurs when the collector's head group spacing aligns with metal-metal distances on the mineral surface, enabling effective electrostatic interactions.These results highlight the potential for designing tailored collectors based on molecular recognition principles, offering a pathway for more efficient and selective flotation of carbonate minerals.http://www.sciencedirect.com/science/article/pii/S2666934X25000108Double-headed collectorsCarbonate mineralsSelective flotationMineral-specific adsorptionMolecular recognition |
| spellingShingle | Manas Barai Tanmay Dutta Anuttam Patra Selective flotation of carbonate minerals JCIS Open Double-headed collectors Carbonate minerals Selective flotation Mineral-specific adsorption Molecular recognition |
| title | Selective flotation of carbonate minerals |
| title_full | Selective flotation of carbonate minerals |
| title_fullStr | Selective flotation of carbonate minerals |
| title_full_unstemmed | Selective flotation of carbonate minerals |
| title_short | Selective flotation of carbonate minerals |
| title_sort | selective flotation of carbonate minerals |
| topic | Double-headed collectors Carbonate minerals Selective flotation Mineral-specific adsorption Molecular recognition |
| url | http://www.sciencedirect.com/science/article/pii/S2666934X25000108 |
| work_keys_str_mv | AT manasbarai selectiveflotationofcarbonateminerals AT tanmaydutta selectiveflotationofcarbonateminerals AT anuttampatra selectiveflotationofcarbonateminerals |