Laboratory Testing & General Mineral Processing Engineering

Laboratory Testing & General Mineral Processing Engineering

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How to get elemental gold (1 reply)

2 years ago
kati567 2 years ago
Hello everyone

I did not expose the crushed ore by the action of dilute nitric acid to remove the base metals. I poured chlorinated water and subjected to high temperatures, filtered, added FeSO4. Powder settled at the bottom. What does it take to get elemental gold? Please answer.
1 year ago
Jorge 1 year ago

After adding chlorine, it is necessary to precipitate the dissolved gold using a reducing agent such as bisulphite or ferrous sulphate. if we consider ferrous sulphate, the chemical reaction is,

3FeSO4.7H2O + AuCl3 = Fe2(SO4)3 + FeCl3 + Au + 7H2O


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