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Class Information
Number: 75/728
Name: Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures > Processes > Producing or treating free metal > Below 300 degrees c > Using nonmetallic material which is liquid under standard conditions (e.g., hydrometallurgy, etc.) > Displacing by another metal (i.e., electromotive series) > Copper(cu) recovered as free metal > And injecting or pressurizing with air or oxygen
Description: Process wherein air or Oxygen is injected into the liquid or process wherein the liquid is subjected to treatment with air or Oxygen at pressures exceeding atmospheric pressure.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5917116 |
Method for the processing of copper minerals |
Jun. 29, 1999 |
| 5795465 |
Process for recovering copper from copper-containing material |
Aug. 18, 1998 |
| 5730776 |
Hydrometallurgical process for the extraction of copper from sulphidic concentrates |
Mar. 24, 1998 |
| 4786323 |
Process for the recovery of noble metals from ore-concentrates |
Nov. 22, 1988 |
| 4610723 |
Process for leaching sulphide concentrates of the tetrahedrite type containing high concentrations of arsenic and antimony |
Sep. 9, 1986 |
| 4384890 |
Cupric chloride leaching of copper sulfides |
May. 24, 1983 |
| 4304644 |
Autoclave oxidation leaching of sulfide materials containing copper, nickel and/or cobalt |
Dec. 8, 1981 |
| 4274931 |
Leaching process for zinc sulphide containing materials |
Jun. 23, 1981 |
| 4249939 |
Method of disposing of spent organic complexing solutions containing cuprous halides |
Feb. 10, 1981 |
| 4166737 |
Method for dissolving the non-ferrous metals contained in oxygenated compounds |
Sep. 4, 1979 |
| 4149945 |
Hydrometallurgical brass dust reclamation |
Apr. 17, 1979 |
| 4149880 |
Recovery of copper from arsenic containing metallurgical waste materials |
Apr. 17, 1979 |
| 4107009 |
Recovery of copper from ores and concentrates |
Aug. 15, 1978 |
| 4093526 |
Hydrometallurgical leaching and refining of nickel-copper concentrates, and electrowinning of copper |
Jun. 6, 1978 |
| 4063933 |
Process for the treatment of complex lead-zinc concentrates |
Dec. 20, 1977 |
| 4053305 |
Recovery of copper and silver from sulfide concentrates |
Oct. 11, 1977 |
| 4030917 |
Hydrometallurgical processing of metal sulfides |
Jun. 21, 1977 |
| 3957602 |
Recovery of copper from chalcopyrite utilizing copper sulfate leach |
May. 18, 1976 |
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