Well I got this batch of about 250g of SMD LEDs which is crying for getting processed, but I just cannot figure out HOW to concentrate the stuff.
I used them from my own old PCBs and unsused from the reel.
The refiner took the LEDs to the lab and (somehow, dont know how) returned me a 2,4% Au yield.
If you have never examined an LED:
It´s yummy, yummy!
Gold, silver and some germanium.
I guess I will only hunt for the gold though.
I have tried:
- to cook them in hot NaOH for hours - no avail unchanged
- "roast" them with heat (400°C), it did not affect the lens
The transparent lens is made of epoxy resin, that is at least what the datasheets say.
If you put them into AP, only the goldplated contacts on the outside will float away, but no internals will be dissolved or attacked.
Any idea on how to get to the core ?
LEDS are becomming mainstream products in households as well. Maybe worth taking a look at...
I used them from my own old PCBs and unsused from the reel.
The refiner took the LEDs to the lab and (somehow, dont know how) returned me a 2,4% Au yield.
If you have never examined an LED:
It´s yummy, yummy!
Gold, silver and some germanium.
I guess I will only hunt for the gold though.
I have tried:
- to cook them in hot NaOH for hours - no avail unchanged
- "roast" them with heat (400°C), it did not affect the lens
The transparent lens is made of epoxy resin, that is at least what the datasheets say.
If you put them into AP, only the goldplated contacts on the outside will float away, but no internals will be dissolved or attacked.
Any idea on how to get to the core ?
LEDS are becomming mainstream products in households as well. Maybe worth taking a look at...