SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Gold/Mining/Energy : Global Platinum & Gold (GPGI) -- Ignore unavailable to you. Want to Upgrade?


To: Ed Fishbaine who wrote (5689)4/10/1998 3:39:00 PM
From: Zeev Hed  Read Replies (2) | Respond to of 14226
 
Ed, I am sorry to disappoint you, but I did not even include the cost of copper in my calculation (because it is mostly recyclable). The electrowinning process is what cost between $.25 to $.5 per lbs of copper deposited. You see, the electrowinning process is the way copper is refined from the smelt in the copper industry, and that process is the great majority of the cost of copper extraction. Thus, unless they have in excess of between $500 to $1000 per ton of goodies, the pile is worth zilch, if, electrowinning is a necessary step in recovering this "special ore".

Zeev

PS, As for the quatity of copper used, you may be right, particularly if you smelt the precipitate rather than the ore. But, if you smelt the ore and then electrowin the smelt, then you are talking about a ratio of pretty close to 1 to 1 ore/copper. This is one of the reasons I am staying aside until I know more about the viability of their process. I am afraid that they are still at the onion peeling stage of the process and are not equipped to move from dead center in this respect.



To: Ed Fishbaine who wrote (5689)4/10/1998 4:10:00 PM
From: Scott Wheeler  Respond to of 14226
 
<< the copper used in the electroplating process is recycled >> Well, kind of -- actually, per W. Palmer they use "virgin" copper granules in the furnacing, but they will not use electrowin-created cathodes, because for some reason (I forget what) that copper doesn't perform as well as a flux. So (I think) they ship that out to a copper recycler.