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The effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation

Iron ore froth flotation has recently been used to obtain pure minerals due to the depletion of high-grade deposits. Amine collectors have often been used in cationic reverse iron ore flotation to achieve the separation with quartz impurities. The main problem associated with these collectors is rel...

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Autores principales: Kapiamba, K. Fabrice, Kimpiab, Merveille
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8027778/
https://www.ncbi.nlm.nih.gov/pubmed/33855236
http://dx.doi.org/10.1016/j.heliyon.2021.e06559
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author Kapiamba, K. Fabrice
Kimpiab, Merveille
author_facet Kapiamba, K. Fabrice
Kimpiab, Merveille
author_sort Kapiamba, K. Fabrice
collection PubMed
description Iron ore froth flotation has recently been used to obtain pure minerals due to the depletion of high-grade deposits. Amine collectors have often been used in cationic reverse iron ore flotation to achieve the separation with quartz impurities. The main problem associated with these collectors is related to the control of frothing properties and the high cost of amine reagents. In this paper, we report the benefits of partial replacement of amine collectors with a frother in reverse cationic flotation of hematite. Surface tension and batch flotation experimental results indicated for the first time that replacing Flotigam EDA, an etheramine collector by more than 10% improved the flotation performance in both grade and recovery of hematite. It was also noted mild hematite entrainments for lower frother dosages whilst reagents cost estimation indicated profitability per ton of iron recovered. At higher frother dosage however, higher quartz recoveries were observed as a result of entrainment which led to satisfactory results in terms of iron grade in the sink, but results showed higher costs of reagents than when collector was used alone. From observed results, it was concluded that partially replacing amine collector by a frother does improve the performance of the flotation globally regardless of pronounced entrainment that was mainly due the mineralogy of the ore with notable amounts of locked particles in the lower sizes. Finally, it would be useful to investigate these findings with alternative reagents and on minerals with different mineralogical properties.
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spelling pubmed-80277782021-04-13 The effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation Kapiamba, K. Fabrice Kimpiab, Merveille Heliyon Research Article Iron ore froth flotation has recently been used to obtain pure minerals due to the depletion of high-grade deposits. Amine collectors have often been used in cationic reverse iron ore flotation to achieve the separation with quartz impurities. The main problem associated with these collectors is related to the control of frothing properties and the high cost of amine reagents. In this paper, we report the benefits of partial replacement of amine collectors with a frother in reverse cationic flotation of hematite. Surface tension and batch flotation experimental results indicated for the first time that replacing Flotigam EDA, an etheramine collector by more than 10% improved the flotation performance in both grade and recovery of hematite. It was also noted mild hematite entrainments for lower frother dosages whilst reagents cost estimation indicated profitability per ton of iron recovered. At higher frother dosage however, higher quartz recoveries were observed as a result of entrainment which led to satisfactory results in terms of iron grade in the sink, but results showed higher costs of reagents than when collector was used alone. From observed results, it was concluded that partially replacing amine collector by a frother does improve the performance of the flotation globally regardless of pronounced entrainment that was mainly due the mineralogy of the ore with notable amounts of locked particles in the lower sizes. Finally, it would be useful to investigate these findings with alternative reagents and on minerals with different mineralogical properties. Elsevier 2021-03-25 /pmc/articles/PMC8027778/ /pubmed/33855236 http://dx.doi.org/10.1016/j.heliyon.2021.e06559 Text en © 2021 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Kapiamba, K. Fabrice
Kimpiab, Merveille
The effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation
title The effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation
title_full The effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation
title_fullStr The effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation
title_full_unstemmed The effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation
title_short The effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation
title_sort effects of partially replacing amine collectors by a commercial frother in a reverse cationic hematite flotation
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8027778/
https://www.ncbi.nlm.nih.gov/pubmed/33855236
http://dx.doi.org/10.1016/j.heliyon.2021.e06559
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