Some patents describe placing in a tube with steam.
You loaded some AC from a solution containing precious metals and other elements? If the solution you place the AC in has a lot of PM's and you use to much AC you will get the NM's first then the junk. CIP or CIC. Carbon in pulp or Carbon in Column. If CIC the theory is the first column will load first and as the solution is spent the last column will have the least. Knowing your values is paramount, you need to know how much goodies are in solution and what point the carbon stops loading values. Knowing this end point will tell how many columns to have and what volume of AC to solution ratio you need. AC can be use several time before it the gives up the ghost, coconut shell AC of course.
To check your AC I use a stainless steel spoon 4 for $1.00, cheap. Place some loaded AC, 5 sunflower seeds volume in the spoon. Add DH2O, bring to boil with propane torch, stop, pick out AC with tweezers, set the AC in new spoon to be repeated, boil down the solution in the first spoon, and see what's cooking. Be sure to use a hood, because if there is any nasty stuff in the solution the AC might pick it up and you don't want to breath the vapor. You will need a good microscope to see the residue. The residue can be metal, or junk, even if it's metal you still don't know what it is. This quickly test is only to see if you have some residue worth going for in the main AC gang. You will flash off values to be sure, maybe most of them using this spoon test, it only a residue quick metal test. Yes some of the spoon's elements will surly transfer too, but you can tell if the residue just thin minor amount or if your AC is loaded. Add a small pinch of oxalic powered when you add the water to make a Au/oxalic compound to keep Au from flashing, or even some ammonium chloride to see if PGM/salts are formed, if so, your ignition must be very slow to prevent PGM's from flashing off. You don't want the fumes to go into anything but a scrubber. I'm sure with experience you can tell if you have gold residue, or Pt sponge or both, however full chemical processing to a button is best test of all. By the way if you use ammonium chloride first you may see some brown smoke leaving the spoon at end of the ignition it might be AuCl blowing off. If this starts stop cool and see if a velvet brown residue is forming on top of Pt looking metal, silver,gray, shinny to dull. Once converted to metal residue you will still need to place this through the gold/Pm process.
You can use a number of solutions to elude the AC mostly the same stuff you use to place NM in solution and part according, however eluding is recommended when you wish to reuse the AC a few times, and values will always remain in the AC. In the end, you will end up burning them anyway just like Lou said.
Burning is a controlled process and all the fumes must be collected in a vapor trap, and/or water scrubber. Carbon will ash fly the goodies if not done right. Before burning ask Lou for the best way.
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