The role of pyrrhotite (Fe₇S₈) and the sample texture in the hydrothermal transformation of pentlandite ((Fe Ni)(₉)S₈) to violarite ((Ni,Fe)(₃)S₄) | The role of pyrrhotite (Fe(7)S(8)) and the sample texture in the hydrothermal transformation of pentlandite ((Fe Ni)((9))S(8)) to violarite ((Ni,Fe)((3))S(4))
2007
Xia, F. | Zhou, J. | Pring, A. | Ngothai, Y. | O'Neill, B. | Brugger, J. | Chen, G. | Colby, C.
The catalytic role of pyrrhotite (Fe<inf>7</inf>S<inf>8</inf>) in the reaction kinetics of the hydrothermal transformation of pentlandite ((Fe,Ni)<inf>9</inf>S<inf>8</inf>) to violarite ((FeNi<inf>2</inf>S<inf>4</inf>) was found to depend on the physical form of pyrrhotite. Pyrrhotite in fine scale intergrown with pentlandite boosts the reaction, whereas in a mechanical mixture of pyrrhotite and pentlandite, it plays the opposite role. This phenomenon was interpreted as result of dissolution of pyrrhotite under reaction conditions. © 2007 Springer Science+Business Media, LLC.
Afficher plus [+] Moins [-]Fang Xia, Jinwen Zhou, Allan Pring, Yung Ngothai, Brian O’Neill, Joël Brugger, Guorong Chen and Chris Colby
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