plamenppp
Well-known member
- Joined
- Nov 16, 2009
- Messages
- 203
I found some old Soviet PCB and collected some 5 kg of plastic chips containing bakelitte (a lot of it), tin (which was on their legs), iron legs (8 of them in each chip), extremely thin gold wires, gold plating (the inside surface of the legs), silicon crystal, and soldier containing gold. I burned everything until it became dust mixed with legs and silicon and gold I removed the plated legs with a magnet and stored the dust for later recovery. There is a lot of iron and it is stopping me from using AR directly. I tried to remove the Fe with HNO3 but the result was almost none. I tried with HCL and again the result was almost none. What should I do to remove it?