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Magnetic separation of serpentinite mining residue as a precursor to mineral carbonation.

Puthiya Veetil, Sanoopkumar; Mercier, Guy; Blais, Jean-François; Cecchi, Emmanuelle; Kentish, Sandra (2015). Magnetic separation of serpentinite mining residue as a precursor to mineral carbonation. International Journal of Mineral Processing , vol. 140 . p. 19-25. DOI: 10.1016/j.minpro.2015.04.024.

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Résumé

Chrysotile mining in Québec has produced about 2 Gt of serpentinite residue. The present study investigates the magnetic separation of serpentinite residue from Québec to produce a non-magnetic feed stock for mineral carbonation. This study also scrutinises the quality of the magnetic fraction recovered for use as a source of iron ore. The optimum conditions of magnetic separation were obtained with multiple pass approaches; at 40% initial pulp density and 7.5 x 10⁻ ³ tesla (T) magnetic intensity with a mean particle size of 75 μm. The process removed about 71% of the iron impurities from the initial feed. The final non-magnetic fraction is rich in magnesium silicates with a low iron oxide concentration of 3.4%. The concentration of iron oxide and silica in the final recovered magnetic fraction are 79% and 8.6%, respectively.

Type de document: Article
Mots-clés libres: magnetic separation; mineral carbonation; serpentinite; mining residue
Centre: Centre Eau Terre Environnement
Date de dépôt: 23 avr. 2018 18:32
Dernière modification: 23 avr. 2018 18:32
URI: http://espace.inrs.ca/id/eprint/3920

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