Use of Phytic Acid for the Removal of Iron in Hot Acidic Leachate from Zinc Hydrometallurgy
| Autor: | Eric Meux, Hervé Muhr, Philippe Pierrat, Nathalie Leclerc, Julien Comel, Sébastien Diliberto |
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| Přispěvatelé: | Institut Jean Lamour (IJL), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Lorrain de Chimie Moléculaire (L2CM), Centre National de la Recherche Scientifique (CNRS)-Université de Lorraine (UL), Laboratoire Réactions et Génie des Procédés (LRGP), Université de Lorraine (UL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Goethite
0211 other engineering and technologies chemistry.chemical_element 02 engineering and technology Zinc engineering.material [CHIM.INOR]Chemical Sciences/Inorganic chemistry chemistry.chemical_compound Jarosite General Materials Science ComputingMilieux_MISCELLANEOUS 021102 mining & metallurgy Phytic acid Hydrometallurgy [CHIM.ORGA]Chemical Sciences/Organic chemistry General Engineering Sulfuric acid [CHIM.CATA]Chemical Sciences/Catalysis Hematite 021001 nanoscience & nanotechnology chemistry visual_art visual_art.visual_art_medium engineering Leaching (metallurgy) 0210 nano-technology Nuclear chemistry |
| Zdroj: | JOM Journal of the Minerals, Metals and Materials Society JOM Journal of the Minerals, Metals and Materials Society, Springer Verlag (Germany), 2021, ⟨10.1007/s11837-021-04640-y⟩ JOM Journal of the Minerals, Metals and Materials Society, Springer Verlag (Germany), 2021, 73 (6), pp.1652-1660. ⟨10.1007/s11837-021-04640-y⟩ |
| ISSN: | 1047-4838 |
| Popis: | International audience; In zinc hydrometallurgy, hot-acidic leaching of calcines leads to Fe/Zn solutions in sulfuric acid medium. Three distinct processes have been previously developed to remove iron: jarosite, goethite and hematite. Each process displays their own drawbacks: important loss of zinc (jarosite, goethite), significant environmental impact of residue (jarosite) or economic cost (hematite). The work reported herein investigated the possibility of using phytic acid, a compound extractable from cereals, to remove iron. Precipitation was studied first at the laboratory-scale using DOE methodology and then with a laboratory pilot. At pH = 2.1, we showed that it is possible to remove up to 99.5% of iron with a loss of zinc equal to 0.6% and a residual concentration of FeIII of 130 mg L−1. Even if the amount of residue is more important than in the jarosite process, leaching tests showed that iron phytate could be stored in less drastic conditions than jarosite. |
| Databáze: | OpenAIRE |
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