Same page:
• Employing an approximately 1% cobalt grade flotation concentrate, 8 different leach regimes were explored.
• Cobalt extraction in autoclave oxidative leaches were typically greater than 95% at temperatures of 115, 135 and 155 deg C and 800 kPa oxygen pressure.
• Copper extractions in these leaches were typically greater than 94%.
• Data suggests that the classical processes of copper SX-EW (Solvent extraction, electrowinning) and cobalt sulphate crystallisation can be employed to produce saleable products
May have to wait for S/S for more info though there was a recording on here a few weeks ago where BB spoke about the acid, and that what little was needed was available in country and not an issue.
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