Palladium said:I've often wondered if you could use the Plattner Kiss process for this. I was thinking of taking a piece 3 in pvc pipe with removable caps with a pvc cut off valve on each end so you could drain from the bottom and bleed from the top. Fill that with material, wet the material with an hcl and water mix, then drain from the bottom. Save the run off for future washing. Then once the material is wet charge the holding chamber with cl gas by means of a chlorine generator allowing the gas to rise until the column is full. Close the top and bottom valve and allow it to do it's work. Once it has worked for awhile open the valves and pour the first solution through to wash the pgm out the bottom. Repeat the process again until the pgm's are leeched. Final wash would just be straight water. Seems like it would take less solution and your pgm's would be better concentrated. This is just theory of course!
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