New material and yield

I got some new material and normally do not weight before & after but curious on this so I did.
The initial amount was 2lb 11.4oz
After AP & cleaned it was 1ib 14.4oz
Gold & some minor junk is 47.6g
The gold still needs to go through another cleaning, its a lot more than I expected. even if there 20g of junk (I don't think there is) I'll still be happy with the amount.

goldscraphobby said:

I got some new material and normally do not weight before & after but curious on this so I did.
The initial amount was 2lb 11.4oz
After AP & cleaned it was 1ib 14.4oz
Gold & some minor junk is 47.6g
The gold still needs to go through another cleaning, its a lot more than I expected. even if there 20g of junk (I don't think there is) I'll still be happy with the amount.

Click to expand...

What's the material, where's it from?

Looks like cut-outs from lead frames. There were a chip manufactured in the middle of each of those frames, this is just the leftovers. Nice scrap anyhow.

I'm sorry to say, but I think you are right and you will see a quite a large percentage of that gold disappear if you melt it or refine it. Foils could look dry but contains quite a lot of moisture and probably some nickel too. My guess based just on a hunch... 5-10 g of junk, the rest gold.

If you have a buyer that pays on gold content then you could just go on and melt it, but it's really easy to do the refining when it's foils.
I would do a final refine of this, but that's my opinion.

Göran

They are the left over leads frames from a custom IC. Would love to get the scrap IC's but that is not possible.
Because of where they come from and application the plating was heavy but was only expecting a couple grams, so any loss from this total does not matter.
I will do more refining, want to get it the purist I can.

I suspected that they might be lead frames. I will have to agree with Goran on the yield. My own personal guess was a bit higher at 12 grams. Would like to know the results.

USSR gold?

No, definitely good old USA gold

Going to drop tomorrow.

Look great I hope you get a really good drop. 8)

So after the first refining the total is ~39g. So lost 8.6g.
I just got another 1lb or so of the material and have it in the AP

Nice. The powder looks great!

It does look nice. Hope you got that bit that ended up on the display of the scale.

Dave

That's some high yield material there! Hopefully it will keep flowing in. Congrats.

FrugalRefiner said:

It does look nice. Hope you got that bit that ended up on the display of the scale.

Dave

Click to expand...

:lol:

I did see that little bit on the scale and got it off.
I just put 1lb 2oz in AP so if it stays the yield is same (3.2%) I should get ~16g