The video review shows imported ceramic microcircuits in which there is even more gold than in Soviet microcircuits. In the process of refining gold from imported microcircuits with hidden gilding, 75 pcs were processed.
At the beginning of processing, the chips were crushed in a soup, placed in a heat-resistant glass, poured a car electrolyte, and added nitric acid in small portions, for complete dissolution of non-precious metals, heated on an electric stove. Filtered ceramics with gilding were poured with royal vodka and dissolved gilding, after dissolving, filtered a solution containing gold from ceramics, evaporated the gold-containing solution, more than half, precipitated gold with hydrazine hydrate. He washed the precipitated gold twice with water, dried and fused, the result shocked me.