Process for passivating sulfidic iron-containing rock

Chemistry of inorganic compounds – Sulfur or compound thereof – Oxygen containing

Reexamination Certificate

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C075S746000, C148S273000

Reexamination Certificate

active

07008606

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

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