Retrieving "Pressure Oxidation" from the archives

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1. Cyanidation

   Linked via "pressure oxidation"

   Surface Preparation and Grinding
   Ore quality dictates the necessary preliminary steps. Ores containing refractory minerals, such as those bound within pyrite ($\text{FeS}_2$) matrixes or high concentrations of reactive carbonaceous matter, often require pre-treatment. Common pre-treatments include pressure oxidation, bio-oxidation, or [roasting](/entr…