GOLD FROM A KILO OF SMALL SOVIET MICROCIRCUITS!

167,746 views

Франсуа Пелье

Published on Mar 27, 2020
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The video shows the process of recycling Soviet microcircuits KR565RU5 + K174*** + K155*** the initial mass of which was ~ 1.5 kg after removing contacts and aluminum - 1 kg. After obtaining a rich gold-containing concentrate (gilding), the material was dissolved in aqua regia and after filtering from silicon was restored - with hydrazine hydrochloride, while a spongy gold sediment was obtained, which was washed with water, then nitric acid, dried and fused into a gold bead.

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