Production of electrolytic copper from dilute solutions contaminated by other metals
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 11, 2000
Grant Date -
N/A
app pub date -
Aug 17, 1998
filing date -
Aug 27, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The copper is selectively precipitated in the form of a sulfide from the solutions containing it, according to the reaction: Cu.sup.2+ +S.sup.2- .fwdarw.CuS The precipitated solid, constituted by copper sulfide, is filtered, washed and then leached with a solution of ferric fluoborate and fluoboric acid, which dissolves the copper as a fluoborate while forming elemental sulfur, according to the reaction: CuS+2Fe(BF.sub.4).sub.3 .fwdarw.Cu(BF.sub.4).sub.2+2Fe(BF.sub.4).sub.2 +S.sup.o After filtering off the sulfur, the copper fluoborate solution is subjected to an electrolysis in a diaphragm cell, obtaining a deposit of pure copper at the cathode and a regenerated solution of ferric fluoborate at the anode, which is utilized to leach further copper sulfide.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully