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Extracting Gold from Rock Containing Multiple Minerals — Step-by-Step Lab Experiment.
Автор: GRH channel
Загружено: 2025-05-01
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Extracting Gold from Rock Containing Multiple Minerals — Step-by-Step Lab Experiment.
• Ore (Au, Ir, Co, Ni)
• Crushing & Grinding
(Break the rock into fine powder)
• Gravity Separation
(Separate heavy minerals like gold and iridium)
• Roasting & Acid Leaching
(Roast the concentrate and leach with acid to dissolve cobalt and nickel)
• Result:
• Co, Ni Residues (in solution)
• Heavy minerals (Au, Ir) remain
6. Gold extraction:
• Smelting with borax, or
• Dissolving with HCl + Bleach, then precipitating
7. Iridium: remains solid or can be smelted at high temperature
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