kjavanb123
Well-known member
Hi all,
During last 3 days, I was busy preparing 91kg of components (PCI slots, CPU sockets, memory slots, connectors and etc) that were removed manually from 440kg motherboards mostly non-Chinese models, and 145kg peripherial cards, for smelting.
Components inside the pyrolysis unit, no smoke or fume.
![image.jpg image.jpg](https://cdn.imagearchive.com/goldrefiningforum/data/attachments/20/20582-67481fc6f63314dea87a11cfa17968e7.jpg)
Incinerated the pyrolozed components, they turned white gray, ball milled them, as the following picture,
![image.jpg image.jpg](https://cdn.imagearchive.com/goldrefiningforum/data/attachments/20/20583-895a560490b8255298949f5dfa524a60.jpg)
Dissolved the base metals in dilute nitric acid, this is what the residue looks like, mostly aluminium caps, or steel frames.
![image.jpg image.jpg](https://cdn.imagearchive.com/goldrefiningforum/data/attachments/20/20584-28e9898c5828f071a41ec76a68f37086.jpg)
And finally the residues from previous steps, were smelted, and from 91kg components, I got 6 grams of gold powder, which is very low yield, there are still unknown amount of gold in the slag, as can been seen with small beads.
Regards
Kj
During last 3 days, I was busy preparing 91kg of components (PCI slots, CPU sockets, memory slots, connectors and etc) that were removed manually from 440kg motherboards mostly non-Chinese models, and 145kg peripherial cards, for smelting.
Components inside the pyrolysis unit, no smoke or fume.
![image.jpg image.jpg](https://cdn.imagearchive.com/goldrefiningforum/data/attachments/20/20582-67481fc6f63314dea87a11cfa17968e7.jpg)
Incinerated the pyrolozed components, they turned white gray, ball milled them, as the following picture,
![image.jpg image.jpg](https://cdn.imagearchive.com/goldrefiningforum/data/attachments/20/20583-895a560490b8255298949f5dfa524a60.jpg)
Dissolved the base metals in dilute nitric acid, this is what the residue looks like, mostly aluminium caps, or steel frames.
![image.jpg image.jpg](https://cdn.imagearchive.com/goldrefiningforum/data/attachments/20/20584-28e9898c5828f071a41ec76a68f37086.jpg)
And finally the residues from previous steps, were smelted, and from 91kg components, I got 6 grams of gold powder, which is very low yield, there are still unknown amount of gold in the slag, as can been seen with small beads.
Regards
Kj