Well I'm not sure how to deal with that then. I haven't dealt with that. How do separate the gold and the pgmsIf this is coming from your waste it may not be gold - it might very well be PGMs - which is why it's black
Kurt
Well I'm not sure how to deal with that then. I haven't dealt with that. How do separate the gold and the pgmsIf this is coming from your waste it may not be gold - it might very well be PGMs - which is why it's black
Kurt
I use an electric kitchen hotplate with a stainless steel pan filled with a layer of dry sand to keep the sand at a more or less constant temperature of 100 degrees C. That protects the flask or beaker against extreme heat.So I'm trying to follow that thread that Martijn posted on this thread. But I'm scared to do all that boiling. Because my hot plate won't boil since I have a catch jar or dish underneath it. And my other hot plate is a simple thing that you're supposed to cook food with so it gets really hot and has broken many glasses of mine. Do you really actually boil it? And that many times?! Don't they break glass too? I'm just hesitant.
No I used different filters almost every time with every filtration. This picture is of its current state it's no longer floaty anymore and have black water all around it, but it still has a black tint to it. I'm going to attempt to clean it further.As i understand you've dissolved it several times and precipitated with smb. Did you test the solution and the waste with stannous for pgm's?
My best guess is just dirty gold that needs a good wash. Did you cool and filter a couple times through the same filter before dropping the gold?
For gold drop - there are few crucial parameters needed to obtain nice precipitates.No I used different filters almost every time with every filtration. This picture is of its current state it's no longer floaty anymore and have black water all around it, but it still has a black tint to it. I'm going to attempt to clean it further.
Easily. Just as regular gold separation - with SMB, or ferrous sulfate. Redissolve the precipitate in AR or preferrably with HCl/ 10-30% H2O2 (no need of de-noxing afterwards) and only gold will drop after applying SMB or ferrous, PGMs will stay in solution.Well I'm not sure how to deal with that then. I haven't dealt with that. How do separate the gold and the pgms
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