Process for mercury control during pressure oxidation

Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium

Reexamination Certificate

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C423S038000

Reexamination Certificate

active

07918919

ABSTRACT:
A method for suppressing mercury dissolution during pressure oxidation of precious metal-containing materials in the presence of halogens and halides is provided. Pressure oxidation is performed under controlled oxidative conditions to maintain the mercury predominantly in the solid residue.

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