GOLD recovered from 8.9 kg gold fingers: the results

  Рет қаралды 126,126

OwlTech

OwlTech

Күн бұрын

0:16 - 3:30 Stage 1 : Concentration - removing of base metals
3:32 - 10:56 Stage 2: Dissolution of gold foils, followed by selective precipitation with ferrous sulphate
12:18 -14:48 Melting
18:42 - 22:31 Combining gold beads

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