Passivation of sulfidic iron-containing rock

Details Passivation of sulfidic iron-containing rock Passivation of sulfidic iron-containing rock

2007-12-25

2007-12-25

Wyszomierski, George P. (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

C075S743000

Reexamination Certificate

active

10842007

ABSTRACT:
A method for passivating sulfidic iron-containing rock comprising: contacting sulfidic iron-containing rock with a magnesium-containing substance, a manganese-containing substance, and a calcium-containing substance; and adjusting the pH of the system to below about 11, is provided. The method can be used to prevent acid rock drainage of metal-bearing rocks or to produce a pretreated ore or rock which can be contacted with a lixiviating agent to extract metals from the pretreated ore or rock.

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