Wingedcloud
Well-known member
- Joined
- Nov 6, 2014
- Messages
- 96
Hello fellow refiners,
Been gathering some amount of e-waste for refining, in order to process each fraction individually, so I could make some notes on recovery yields, for future work, and I decided I should post them here on the forum. Give a little information back, for the huge amount the forum has given me
These values are probably well known by now, as they are from usually recovered materials, but I will post them anyway, if not more, to receive some inputs as to how good (or bad) my recovery work is.
So I tried to make it as much condensed as possible, while providing with the most important information, regarding ratios, mostly.
The processes used for recovery were the traditional ones:
- AR for the ceramic CPU;
- Heatgun to remove pins, HCl bath, water rinse, HNO3 bath and AR for the fiber CPU pins;
- AP for fingers, and ball mill, followed by blue bowl for IC. AR to dissolve gold from both sources.
From the table, I could take these conclusions:
- On the CPU's, the gold/ratio turned out to be a little below the ratio provided by some tables and files found on the internet, on CPU gold yields. For example, some of them claim that the INTEL Pentium's shown here have around 0,12g Au/unit, which does not seem to be the case, unless I made a mistake in the recovery that caused my to lose around 50% of the gold, which I find to be very hard to happen;
- The green fiber result (just noticed it says "fibre" in the picture ) is also a bit under the value provided by said CPU yield list, but since most of them where the smaller type, I'm not too "schocked" with the yield. These are known for very low yield;
- As for the RAM, I was a little bit disappointed with the yield. After the wash, the gold in IC's is fairly visible and, on this case, it wasn't much, to be fair. I even reprocessed the waste to make sure I did not lose most of it, but there really was all there. IC's from RAM are talked about being rich in gold content, but it does not seem to be the case, at least in this recovery, with the RAM I had.
So, if anyone is willing to take a look at these results and share some ideas and thoughts about it, would be appreciated.
Also, I hope that this can help someone
Thanks in advance!
Winged.
Been gathering some amount of e-waste for refining, in order to process each fraction individually, so I could make some notes on recovery yields, for future work, and I decided I should post them here on the forum. Give a little information back, for the huge amount the forum has given me
These values are probably well known by now, as they are from usually recovered materials, but I will post them anyway, if not more, to receive some inputs as to how good (or bad) my recovery work is.
So I tried to make it as much condensed as possible, while providing with the most important information, regarding ratios, mostly.
The processes used for recovery were the traditional ones:
- AR for the ceramic CPU;
- Heatgun to remove pins, HCl bath, water rinse, HNO3 bath and AR for the fiber CPU pins;
- AP for fingers, and ball mill, followed by blue bowl for IC. AR to dissolve gold from both sources.
From the table, I could take these conclusions:
- On the CPU's, the gold/ratio turned out to be a little below the ratio provided by some tables and files found on the internet, on CPU gold yields. For example, some of them claim that the INTEL Pentium's shown here have around 0,12g Au/unit, which does not seem to be the case, unless I made a mistake in the recovery that caused my to lose around 50% of the gold, which I find to be very hard to happen;
- The green fiber result (just noticed it says "fibre" in the picture ) is also a bit under the value provided by said CPU yield list, but since most of them where the smaller type, I'm not too "schocked" with the yield. These are known for very low yield;
- As for the RAM, I was a little bit disappointed with the yield. After the wash, the gold in IC's is fairly visible and, on this case, it wasn't much, to be fair. I even reprocessed the waste to make sure I did not lose most of it, but there really was all there. IC's from RAM are talked about being rich in gold content, but it does not seem to be the case, at least in this recovery, with the RAM I had.
So, if anyone is willing to take a look at these results and share some ideas and thoughts about it, would be appreciated.
Also, I hope that this can help someone
Thanks in advance!
Winged.