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Gold/Mining/Energy : Global Platinum & Gold (GPGI)
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To: Richard Mazzarella who wrote (6316)6/24/1998 2:38:00 PM
From: Tim Hall  Read Replies (1) of 14226
 
Richard, this is indeed a very interesting process.

<First they screen the ore.> I believe the bulk assays of the pile did not require screening and were still very rich. Isn't the pile already screened material?

<Next they leach, filter, etc. and then precipitate> I do not know what they use to leach, but if they are successful in leaching all of the precious metals wouldn't they be ionic in the solution. Why not just run this solution over the resin? What do they add to precipitate? Obviously the precipitant would have to be some compound and since some of these precious metals are reluctant to form compounds, what is added to initiate precipitation.

<Next they add copper and secret sauce and smelt> Do they use any flux when they do this? I would think they would have to or the copper would oxidize. How do they get pellets instead of dore?

<Now they dissolve again>> What do they use to disolve this time?

Professor Zeev, please help me here with your comments on this process.

Tim Hall
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