cost of materials + cost of safe disposal means you're probably losing money or at least, working for almost minimum wage. A fun science experiment, but there's a reason they only do this in 3rd world countries.
Captain here.
What looks like gold pieces is actually copper with a thin gold surface layer.
You can get the gold out using the chemicals, but the amount is massively misleading in this video.
The copper portion on these scraps is much larger than the gold portion
*flies away*
In the past due to the technological limitations the gold plating layer on electronics was much much much thicker and so it was worth salvaging, these days technology allows for very thin plating layers and so there is much less gold on modern e-waste, making it hardly profitable.
This is not as expensive as everyvone think it is. The melting part is unnecessary. You could simply dissolve the gold in aqua regia and precipate it again. The acids cost less than 50$
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