Non-Chemical Hydrochloric acid boil question

[Dougplogan]

What will you accomplish by that?
The only problem by incinerated filters is that the ash may be hard to filter.
Dissolving copper chloride and tin is best done before incineration, in my mind at least.

I'm fairly sure tin is gone. Everything is left to sit in HCl for about 24 hours then is processed in AP. Then it's poured through a coffee filter to catch gold foils. That's all that's done so far. Some of the stuff is fairly clean but other stuff has black powder or green prices of circuit board pieces that broke off to fine to pick out. Either way I'm 100% certain the stuff needs to be cleaned up a little more before going to ar. It's all e waist stuff. It's not all clean finger foils.

 

[cejohnsonsr1]

I've been using AP. Though I guess it was only AP the first time. Now I just mix some old AP with HCl and let it sit for a while. It worked faster when it was warmer outside but no real hurry I suppose. Thanks for the heads up on the mason jar. I'd have learned that one the hard way for sure. What I have now Is a dry mason jar full of coffee filters full of gold foils. All the foils came from AP solutions. I don't want to add them to ar just yet. Plus that many coffee filters I'd prefer to keep out of the refining process when time comes. Will they be digested if I do an HCl boil. I know I need to anyways to insure the foils are clean. I do have a small amount of sulfuric acid. I just read conflicting information on adding it to hcl

If you can scrape the filters down to just one or two you’ll be better off. If you can at least trim away the excess filter paper that would help a lot too. AR will digest quite a bit of paper, but no sense making have to work any harder than necessary. Remember that the key is to add the Nitric slowly and in small doses using just enough to do the job. Then you won’t have to worry about denoxing. As to the sulfuric acid, you can add a few drops to precipitate any led that might have followed the gold to this point. If there is any led, it will be removed along with any other trash and solids when you filter the solution.

 

[Yggdrasil]

I'm fairly sure tin is gone. Everything is left to sit in HCl for about 24 hours then is processed in AP. Then it's poured through a coffee filter to catch gold foils. That's all that's done so far. Some of the stuff is fairly clean but other stuff has black powder or green prices of circuit board pieces that broke off to fine to pick out. Either way I'm 100% certain the stuff needs to be cleaned up a little more before going to ar. It's all e waist stuff. It's not all clean finger foils.

When it is done in AP.
A quick HCl wash may take what is left, but it creates a lot more waste.
So as long it is what is left in the filters I'd just start a hot HCl and add a little Nitric and start stirring.
As the filters with content dissolve one may add more nitric as needed.
In the end you will have it all dissolved.
It need to be hot, but not boiling and stirred well.
After that filter the solution that now might be green if there was copper left. The filter well and wash through filter. The filter go in the used filter box.
Then precipitate by favourite method.
After stannous test of course.
Stannous after precipitation should be clear, but still put spent solution in stock pot.

 

[Geo]

I started with used coffee pots from the thrift store. Used glassware should be used with a non-reactive catch pan. I have had coffee pots break for no apparent reason. I have also had some that still survive today although I never use them any more. Corningware, Vision ware (amber or cranberry) which is also made by corning ware make great catch pan. I have abused mine in ways that would make a grandmother cry with grief. Like dropping a pyroceram dish that is glowing red hot into water, not recommended but it survived and didn't even crack.
https://en.wikipedia.org/wiki/CorningWare

 

[kurtak]

, Vision ware (amber or cranberry) which is also made by corning ware make great catch pan.

Thats what I use - anytime I see it in a thrift store I buy it just for my refining

Kurt

 

[Dougplogan]

Thats what I use - anytime I see it in a thrift store I buy it just for my refining

Kurt

I found some pyroceram on eBay. 13 bucks for two square dishes shipped

 

[FrugalRefiner]

I find mine at yard sales / garage sales. I usually pay about a dollar or two per piece.

Dave