I think Peroxide lines can produce copper in a form that is easily 
redissolved.  As I remember our old Microplate line it used a crystallizer 
to remove copper sulfate from the peroxide sulfuric .  It gave nearly pure 
copper sulfate pentahydrate crystals, which can be reused or redissovled to 
make a electrowinning cell solution.
 ----------
From: [log in to unmask]
To: [log in to unmask]; [log in to unmask]
Subject: Re: GEN: Electrowinning Units
Date: Thursday, January 02, 1997 8:14AM

Tried it, liked it a little.  Stopped using it when we could found it could 
not be used on peroxide containing lines.  The peroxide has a higher 
chemical voltage than the electrical power supply voltage, and will etch the 
copper off of the electrowinning cathodes.  Works best on batch treatments 
of known composition, such as drag outs tanks, or spent baths.

Have fun.
George Franck
I work for Raytheon E-Systems Falls Church. They disclaim anything I say 
here since it is my own personel opinion.



On Dec 29,  9:50am, [log in to unmask] wrote:
> Subject: GEN: Electrowinning Units
> Hopefully, not to generate a slew of advertisements, but is anyone out
> there ACTIVELY using electrowinning?
> > What are the real world demands (i.e., labor, maintenance, costs, 
ROIs)?> > Has anyone noticed differing results depending on the matrix the 
metal
> was in originally?
> > Is there anything I did not ask that was unusual on introduction to the
> shop?
> > > [log in to unmask]
> > [log in to unmask]
> > ************************************************************************
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