micronationcreation
Well-known member
hi, just wondering what the best way to process old filter paper, after incineration how do i separate ash from any metals that may be prescent? many thanks
The same way you remove values from other substances. You dissolve them with AR (or the solvent of your choosing), then filter the liquid from the solids.micronationcreation said:hi, just wondering what the best way to process old filter paper, after incineration how do i separate ash from any metals that may be prescent? many thanks
Harold_V said:The same way you remove values from other substances. You dissolve them with AR (or the solvent of your choosing), then filter the liquid from the solids.micronationcreation said:hi, just wondering what the best way to process old filter paper, after incineration how do i separate ash from any metals that may be prescent? many thanks
Incinerate the papers until there is no carbon, then digest the ash in HCl. That insures the resulting gold chloride solution will filter well.
Ultimately, you end up with solids of questionable value and content. A furnace does wonders in recovering traces, assuming you use the proper flux and have a collector present. Excess silver chloride, along with the proper flux, does a remarkable job of collecting.
Harold
butcher said:stainless steel pot.
I use a corning skillet, propane stove and a torch, incineration is not melting, incinerate powder to glow red, plenty of oxygen from air or torch will help to oxidize metals, Note start with low heat to drive off water, nitrates and then chlorides then sulfates before raising temp to red hot, after powders dried heat will usually form a fusion, thick syrup further heating will harden and dry again, as gases of these chemicals escape, do not breath these, crushing this cake back to powder, then raise temperature to glowing red hot, heating too hot too fast at first with chlorides can evaporate gold (yellow fumes condensing on colder object is an indication of this problem).
It is a good time to read Harold’s post on this subject, it does wonders for your success in refining.
After you have eliminated the base metals, get everything in a filter and dried, then incinerate the filter paper along with its contents, heating in a small stainless steel frying pan.
wrecker45 said:hey joe take a magnet. :mrgreen:
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