Screw up.

[Yggdrasil]

I barely added the peroxide. However the difference between the 3% peroxide and the 34% could be the culprit because today it didn’t smell of acids at all. It has since been boiled off to about 1/4 the solution. I’m going to add some fresh hcl and go from there. I’m using 2000 ml beaker and after my first drop had cooled off there was about 1 inch of silver chloride on the bottom. Put it back on the heat that’s when I was called away to help my father. Came back and both beakers were on heat and this is where I screwed up by going to dissolve the wrong beaker with h202 @ 34% and hcl. These shingles has really put me through hell.

There can't be much Silver Chloride as Silver do not dissolve in HCl

 

[snoman701]

It's not silver chloride.

 

[Martijn]

Back to basics.

When you add Hydrogen Peroxide to HCl, the hydrogen peroxide releases chlorine gas from the HCl. This is what will oxidize gold, as well as all of the base metals. At this point, you should have been able to fish the plastic remains out of the beaker, leaving only a green liquid, possibly with some cloudiness if there was silver or lead present. Silver chloride is insoluble in water. Lead chloride is insoluble in cold water, but soluble at higher temps. If you tested your liquid with stannous, and there was gold present in the pins you dissolved, then it should test positive at this point.

The pregnant (with gold) liquor should at this point have sulfuric acid added in a small amount. This causes any lead present to precipitate. The liquor should then be allowed to cool, and be filtered. The filtrate should be clear.

Now, since you used hydrogen peroxide, there is no need to denox. If there was an abundance of oxidizer, just leave it on a hot plate for a while. All of the oxidizer (being chlorine gas) will gas off.

You should be able to add SMB and precipitate gold.

My guess, is that you added so much hydrogen peroxide that you turned a good amount of the HCl into water, the pH came up, and the base metals precipitated as hydroxides.

You can test that by taking a small amount of the sludge and adding fresh HCl to it, without hydrogen peroxide. It should all go into solution except the gold present. Once you have all of the copper / zinc in solution, it's then and only then that you add additional oxidizer (Hydrogen Peroxide) to get the gold to go into solution.

If I may add: before dissolving the foils and having tested the AP for gold in solution, you decant or filter the foils/powder and wash that in warm HCL.
Store the AP for reuse on a new batch.

then you dissolve the gold in clean HCl plus an oxidizer.

then you add a drop of H2SO4 and dilute and chill to filter out any traces of silver and lead salts.

then you precipitate, wash and melt.

So @dansdismantling: first you add HCL to this soup (enough to slowly let it all dissolve), keep it all from the heat, let it dissolve all the salts and hydroxides and filter the solids from the solution.
Test this AP SBM solution for gold with stannous.
Then treat it as waste.

Then wash the solids with HCl and dissolve in fresh HCl with H2O2.