Thermal Beneficiation of Sra Ouertane (Tunisia) Low-Grade Phosphate Rock
| Autor: | Noureddine Abbes, Nils Haneklaus, Gerald Steiner, Essaïd Bilal, Ludwig Hermann |
|---|---|
| Přispěvatelé: | GROUPE CHIMIQUE TUNISIEN (GCT), Département Procédés pour l'Environnement et Géoressources (PEG-ENSMSE), Centre Sciences des Processus Industriels et Naturels (SPIN-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Environnement Ville Société (EVS), École normale supérieure - Lyon (ENS Lyon)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-École Nationale des Travaux Publics de l'État (ENTPE)-École nationale supérieure d'architecture de Lyon (ENSAL)-Centre National de la Recherche Scientifique (CNRS), Proman Management GmbH, Partenaires INRAE, Td Lab Sustainable Mineral Resources, Danube University Krems, Groupe Chimique Tunisien, Td Lab Sustainable Mineral Resources, Danube University Krems, Environnement, Ville, Société (EVS), École normale supérieure de Lyon (ENS de Lyon)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-École Nationale des Travaux Publics de l'État (ENTPE)-École nationale supérieure d'architecture de Lyon (ENSAL)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Thermogravimetric analysis
Tunisia lcsh:QE351-399.2 Thermal treatment 010501 environmental sciences 010502 geochemistry & geophysics 01 natural sciences calcination Sra Ouertane law.invention Metal chemistry.chemical_compound MESH: 10.3390/min10110937 law [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Calcination 0105 earth and related environmental sciences Quenching lcsh:Mineralogy Chemistry thermal beneficiation Geology Geotechnical Engineering and Engineering Geology Phosphate low-grade phosphate rock Phosphorite visual_art visual_art.visual_art_medium Powder diffraction Nuclear chemistry |
| Zdroj: | Minerals, Vol 10, Iss 937, p 937 (2020) Minerals Minerals, MDPI, 2020, 10 (11), pp.937. ⟨10.3390/min10110937⟩ Minerals, 2020, 10 (11), pp.937. ⟨10.3390/min10110937⟩ Volume 10 Issue 11 |
| ISSN: | 2075-163X |
| DOI: | 10.3390/min10110937⟩ |
| Popis: | International audience; Low-grade phosphate rock from Sra Ouertane (Tunisia) was beneficiated using a thermal treatment consisting of calcination, quenching, and disliming. Untreated phosphate rock samples (group 1), calcined phosphate rock samples (group 2), as well as calcined, quenched, and dislimed (group 3) phosphate rock samples, were investigated using inductively-coupled plasma atomic emission spectroscopy (ICP-AES), inductively-coupled plasma mass spectrometry (ICP-MS), thermogravimetric analysis (TGA), and X-ray powder diffraction (XRD). Besides, the particle sizedistribution of the aforementioned three groups was determined. The proposed thermal treatment successfully increased the P2O5 content of the untreated phosphate rock from 20.01 wt% (group 1) to 24.24 wt% (group 2) after calcination and, finally, 27.24 wt% (group 3) after calcination, quenching, and disliming. It was further found that the concentration of relevant accompanying rare earth elements (Ce, La, Nd, Pr, Sm, and Y) was increased and that the concentration of Cd could be significantly reduced from 30 mg/kg to 14 mg/kg with the proposed treatment. The resulting phosphate concentrate showed relatively high concentrations in metal oxides: Σ MgO, Fe2O3, Al2O3 = 3.63 wt% and silica (9.81 wt%) so that it did not meet the merchant grade specifications of a minimum P2O5 content of 30 wt% yet. Removal of these elements could be achieved using additional appropriate separation techniques. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|