Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
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United States of America Patent
Stats
-
Dec 22, 2020
Grant Date -
Jun 11, 2020
app pub date -
Jan 15, 2020
filing date -
Apr 17, 2015
priority date (Note) -
Published
status (Latency Note)
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Abstract
This application pertains to methods of recovering metals from metal sulfides that involve contacting the metal sulfide with an acidic sulfate solution containing ferric sulfate and a reagent that has a thiocarbonyl functional group, wherein the concentration of reagent in the acidic sulfate solution is sufficient to increase the rate of metal ion extraction relative to an acidic sulfate solution that does not contain the reagent, to produce a pregnant solution containing the metal ions.
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International Classification(s)
- 2020 Application Filing Year
- C22B Class
- 267 Applications Filed
- 123 Patents Issued To-Date
- 46.07 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 4 Citation Count
- C22B Class
- 73.86 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 22, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 22, 2032 |
