Monazite Recovery by Magnetic and Gravity Separation of Medium Grade Zircon Concentrate from Senegalese Heavy Mineral Sands Deposit
- 1 Earth Science Institute, Cheikh Anta Diop Dakar University, Dakar, Senegal
- 2 Earth Science Institute, Cheikh Anta Diop Dakar University, Dakar, Senegal
- 3 Eramet Ideas, Trappes, France
- 4 Earth Science Institute, Cheikh Anta Diop Dakar University, Dakar, Senegal
Abstract
Gravity, magnetic and electrostatic separation methods allowed to obtain different titanium oxide concentrates (ilmenite, leucoxene, rutile) and different varieties of zircon concentrates (premium zircon, standard zircon, medium grade zircon standard) from Senegal’s heavy mineral sands. During mining separation, monazite, which is a paramagnetic mineral, was found in a non-negligible concentration of 0.57 wt% on average in the medium grade zircon standard which also contains 37.96 wt% zircon and 44.46 wt% titanium oxides. Magnetic and gravity separation tests were carried out on the Medium grade zircon standard (MGZS) to produce a monazite concentrate at Eramet Ideas laboratory. Magnetic separation at 1.5 teslas intensity resulted in the recovery of 94.8% of the monazite from the MGZS. Gravity separation also recovered 76.6% of the monazite from the MGZS. The combination of these two treatment methods can thus produce three concentrates from MGZS (a monazite concentrate, a zircon concentrate, and a titanium oxide concentrate).
- Van Gosen, B.S., Fey, D.L., Salah, A.K., Verplank, P.L. and Hoefen, T.M. (2014) Deposit Model for Heavy-Mineral Sands in Coastal Environments: Scientific Investigations Report 2010-5070-L. U.S. Geological Survey, Reston, VA, 51 p. https://doi.org/10.3133/sir20105070L
- Chakhmouradian, A.R and Wall, F. (2012) Rare Earth Elements: Minerals, Mines, Magnets (and More). Elements, 8, 333-340. https://doi.org/10.2113/gselements.8.5.333
- Seck, M., Faye, S., Robertson, M. and Rose, M. (2018) Recycling Tailings Seepage Water for Diogo Heavy Minerals Mine Sustainability (Northern Senegal). Journal of Water Resource and Protection, 10, 121-144. https://doi.org/10.4236/jwarp.2018.101008
- Delaporte, A., Blancher, S., Goncalves, P. and Wallmach, T. (2018) Physical Property Changes of Fe-Ti Oxides along Their Alteration: A Geometallurgical Study to Improve the Yield of a Mineralurgical Plant. IMPC Conference, Moscow, 17-21 September 2018, 1-22.
- Dieye, M., Van Lichtervelde, M., Ndiaye, A.A., Gueye, M. and Blancher, S.B. (2020) Mineralogical Characterization of Heavy Mineral Concentrates from Senegalese Great Cost by Using QEMSCAN and SEM. International Journal of Geosciences, 11, 800-817. https://doi.org/10.4236/ijg.2020.1112041
- Edahbi, M., Benzazoua, M., Plante, M., Doire, S. and Kormos, L. (2018) Mineralogical Characterization Using QEMSCAN® and Leaching Potential Study of REE within Silicate Ores: A Case Study of the Matamec Project, Québec, Canada. Journal of Geochemical Exploration, 185, 64-73. https://doi.org/10.1016/j.gexplo.2017.11.007
- Guanira, K., Valente, T., Rios, C., Castellanos, O., Salazar, L., Lattanzi, D. and Jaime, P. (2020) Methodological Approach for Mineralogical Characterization of Tailings from a Cu(Au,Ag) Skarn Type Deposit Using QEMSCAN (Quantitative Evaluation of Minerals by Scanning Electron Microscopy). Journal of Geochemical Exploration, 209, Article ID: 106439. https://doi.org/10.1016/j.gexplo.2019.106439
- Mackay, D., Simandl, G., Ma, W., Redfearn, M. and Gravel, J. (2016) Indicator Mineral-Based Exploration for Carbonatites and Related Specialty Metal Deposits—A QEMSCAN® Orientation Survey, British Columbia, Canada. Journal of Geochemical Exploration, 165, 159-173. https://doi.org/10.1016/j.gexplo.2016.03.005
- Smyte, D., Lombard, A. and Coetzee, L. (2013) Rare Earth Element Deportment Studies Utilising QEMSCAN Technology. Minerals Engineering, 52, 52-61. https://doi.org/10.1016/j.mineng.2013.03.010
- Dawood, Y.H. and Abd-El Naby, H.H. (2007) Mineral Chemistry of Monazite from the Black Sand Deposits, northern Sinaï, Egypt: A Provenance Perspective. Mineralogical Magazine, 71, 389. https://doi.org/10.1180/minmag.2007.071.4.389