Glassware

[Yggdrasil]

Thank you for the example. After looking at mine I'm guessing that is considered a big hole so I shall order some screen that you talked about. Or what brand is it that has the small holes that is of good quality? The one I got was just a cheap $40 off Amazon. But then again it may come in handy with the bigger holes washing off stuff that comes out of the hydrochloric acid bath with a bubbler to spray off the chips into before they get thrown away.

Can you elaborate your process?
What chips and so on?

 

[joshu705]

Can you elaborate your process?
What chips and so on?

The little pinless CPU chips. When the gold comes off of them it's about the size of a tip of a pencil lead. I've been putting them in the hydrochloric acid with a bubbler. But the little dots of gold seem to clean on to the chips. But I was noticing the gold getting passed the filters and could see them down in the hydrochloric acid. After the first initial filtering I switched to a different jar with the filter and spray each little chip off to get the gold off of it. That way my acid is still good for another run and not watered down. Maybe later on I'll learn a different process but for now just starting out I'm going to stay with the basics.

 

[Yggdrasil]

The little pinless CPU chips. When the gold comes off of them it's about the size of a tip of a pencil lead. I've been putting them in the hydrochloric acid with a bubbler. But the little dots of gold seem to clean on to the chips. But I was noticing the gold getting passed the filters and could see them down in the hydrochloric acid. After the first initial filtering I switched to a different jar with the filter and spray each little chip off to get the gold off of it. That way my acid is still good for another run and not watered down. Maybe later on I'll learn a different process but for now just starting out I'm going to stay with the basics.

Ok.
But those dots are so small there are next to no Gold in them.
They are probably the lowest yield you can get.
Depending on the rest if the design there may or may not be Gold bond wires.
Then they need to be pyrolized and incinerated.

 

[4metals]

so I shall order some screen that you talked about. Or what brand is it that has the small holes that is of good quality?

Any hardware store will have fiberglass window screening and that is what you need. Coors ceramics in Golden Colorado, yup the same as the beer company, makes the best Buchner funnels but you pay for the quality. They have offices all over the world.

 

[eaglekeeper]

If you don't use vacuum much, these heavy glass speed funnels are excellent. You fold the paper and the ridges keep the paper from sealing to the sidewall of the funnel and they filter pretty quickly for gravity.

Thanks.
I do use 'Slow Qualitative" filters so it may speed things up. Do those funnels have a scientific name.

 

[4metals]

Glass speed funnels, try this guy

I had one which was very old which I acquired from a clean up at the old US Mint assay office in NYC. The assay office closed in the early 1980's and it was like a museum as all it did was gravimetric assays. The funnels were probably 100 years old. The grooves were much deeper and it was awesome. Until gravity kicked in and it became a million shards of glass. The newer ones still have grooves just not as pronounced.

The reason a typical smooth glass funnel is not as fast is the paper seals flat on the glass and the liquid cannot pass through it efficiently. Simply lifting the paper so it cannot seal to the glass and can drain after going through the paper makes it very effective. Gotta love simplicity.

 

[FrugalRefiner]

You can also use that same fiberglass screen to speed up a standard funnel by fitting a layer of it between the funnel and the filter paper.

Dave

 

[4metals]

You can also use that same fiberglass screen to speed up a standard funnel by fitting a layer of it between the funnel and the filter paper.

And this is exactly why you call yourself frugal!