Gold recovery from epoxy transistors : Yield data

In this video i demonstrated gold recovery from epoxy transistors.
There are totally different epoxy transistors available high quality and low quality made transistors.
Usually in low quality made transistors manufacturers have used aluminum to transfer electricity so they don't have any value for precious metals recovery.
In those with higher quality usually the bond wire is made of gold


00:26 weighting Transistors
00:48 Nitric acid leaching for silver
2:26 Transistors incineration
3:00 Pulverizing transistors in Hammer mill
3:54 Obtaining clean copper
5:59 Gold concentration blue bowl
7:42 Nitric acid leaching
8:31 aqua regia treatment to dissolve gold
10:21 gold precipitation with iron sulfate
12:10 Final yield




╔═╦╗╔╦╗╔═╦═╦╦╦╦╗╔═╗
║╚╣║║║╚╣╚╣╔╣╔╣║╚╣═╣
╠╗║╚╝║║╠╗║╚╣║║║║║═╣
╚═╩══╩═╩═╩═╩╝╚╩═╩═╝👇

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