Process for passivating sulfidic iron-containing rock

Details Process for passivating sulfidic iron-containing rock Process for passivating sulfidic iron-containing rock

C - Chemistry, Metallurgy

22

B

C22B 1/00 (2006.01) C22B 3/14 (2006.01)

Patent

CA 2452496

A method is provided for passivating sulfidic iron-containing rock comprising contacting sulfidic iron-containing rock with one or more members of the groups consisting of magnesium oxide, magnesium hydroxide, magnesium chloride, magnesium nitrate and magnesium carbonate, thereby reducing the acid generation potential of rock.

L'invention se rapporte à un procédé de passivation d'une roche sulfureuse contenant du fer, comprenant la mise en contact d'une roche sulfureuse contenant du fer avec un ou plusieurs éléments du groupe formé par l'oxyde de magnésium, l'hydroxyde de magnésium, le chlorure de magnésium, le nitrate de magnésium et le carbonate de magnésium, ce qui permet de réduire le potentiel de production d'acide de ladite roche.

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