Working on yet another ore here and the end result of a mixed halogen leach followed by total metals precipitation from the lixiviant followed by selective iron dissolution in oxalic acid has yielded, after incineration a dark reddish-purple metal powder. Thinking that this powder is mostly some species of iron I have the beastie boiling in HCL... and nuthin' is dissolving to speak of. I figured hot HCL would pretty much get rid of any iron that made it this far, while leaving the good stuff. Anyone want to take a stab at this?
Hot HCL insoluble iron species?
- Thread starter jsargent
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Reddish purple, hematite maybe? I don't know the solubility of hematite in HCl but I would guess it's quite low.
g_axelsson said:
That's possible... yet it is more purplish than hematite I have seen. Very slightly magnetic, which fits, as hematite is not strongly magnetic. All I know for sure is it's evil and the Devil himself mixed it into my ore just to vex and confound me. :evil:
Harold_V said:
There's no doubt some copper in this and whatever other metals will dissolve in a mixed halogen leach yet are insoluble in both oxalic and HCL. Haven't tried nitric or sulfuric yet. Sulfuric would dispose of the copper while not introducing the problems nitric presents. Good idea Harold... Thanks!
