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Class Information
Number: 205/570
Name: Electrolysis: processes, compositions used therein, and methods of preparing the compositions > Electrolytic synthesis (process, composition, and method of preparing composition) > Preparing single metal > Precious metal produced > Leaching, dissolving, or extracting prior to synthesis > Utilizing halogen containing material
Description: Subject matter wherein a halogen containing material (e.g., hydrochloric acid, ferric chloride, etc.) is used in the leaching, dissolving, or extracting process (i.e., halogenating leach).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6156186 |
Method for removing contaminants from process streams in metal recovery processes |
Dec. 5, 2000 |
| 5874055 |
Chloride assisted hydrometallurgical extraction of metal |
Feb. 23, 1999 |
| 5869012 |
Chloride assisted hydrometallurgical extraction of metal |
Feb. 9, 1999 |
| 5542957 |
Recovery of platinum group metals and rhenium from materials using halogen reagents |
Aug. 6, 1996 |
| 5487819 |
Production of metals from minerals |
Jan. 30, 1996 |
| 5389212 |
Method for recovering photographic and industrial waste |
Feb. 14, 1995 |
| 5156721 |
Process for extraction and concentration of rhodium |
Oct. 20, 1992 |
| 5135624 |
Electrolytic hydrometallurgical silver refining |
Aug. 4, 1992 |
| 4997532 |
Process for extracting noble metals |
Mar. 5, 1991 |
| 4980134 |
Leaching process |
Dec. 25, 1990 |
| 4904358 |
Gold and silver recovery processes by electrolytic generation of active bromine |
Feb. 27, 1990 |
| 4734171 |
Electrolytic process for the simultaneous deposition of gold and replenishment of elemental iodine |
Mar. 29, 1988 |
| 4668289 |
Method for reclaiming gold |
May. 26, 1987 |
| 4557759 |
Iodine leach for the dissolution of gold |
Dec. 10, 1985 |
| 4299676 |
Recovery of silver from photographic film |
Nov. 10, 1981 |
| 4288304 |
Hydrometallurgical process for treatment of sulphur ores |
Sep. 8, 1981 |
| 4173519 |
Method, process, system, and apparatus for recovering metal values from ores |
Nov. 6, 1979 |
| 4159930 |
Process for recovering heavy metal ions from dilute aqueous solution |
Jul. 3, 1979 |
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