| |
 |
|
Class Information
Number: 75/731
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 > Utilizing leaching agent containing sulfur(s)
Description: Process which utilizes a Sulfur (S) containing chemical agent to leach the metalliferous material.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7125436 |
Method for improving metals recovery using high temperature pressure leaching |
Oct. 24, 2006 |
| 6319389 |
Recovery of copper values from copper ores |
Nov. 20, 2001 |
| 5820653 |
Process for making shaped copper articles |
Oct. 13, 1998 |
| 5788740 |
Method for the hydrometallurgical separation and recovery of biological nutrients, lead, gypsum and cadmium from raw materials |
Aug. 4, 1998 |
| 5730776 |
Hydrometallurgical process for the extraction of copper from sulphidic concentrates |
Mar. 24, 1998 |
| 5019273 |
Method for recovery of heavy metals from highly concentrated wastewater solutions |
May. 28, 1991 |
| 4789446 |
Method of processing residues from the hydrometallurgical production of zinc |
Dec. 6, 1988 |
| 4610723 |
Process for leaching sulphide concentrates of the tetrahedrite type containing high concentrations of arsenic and antimony |
Sep. 9, 1986 |
| 4497659 |
Production of metals with low selenium contents |
Feb. 5, 1985 |
| 4304599 |
Heavy metal removal process |
Dec. 8, 1981 |
| 4294434 |
Heavy metal removal apparatus |
Oct. 13, 1981 |
| 4274931 |
Leaching process for zinc sulphide containing materials |
Jun. 23, 1981 |
| 4240826 |
Process for the recovery of arsenic as a zinc arsenate and its _utilization in the purification of zinc plant electrolytes |
Dec. 23, 1980 |
| 4225342 |
Treatment of zinc plant leach residues for recovery of the contained metal values |
Sep. 30, 1980 |
| 4219354 |
Hydrometallurgical process for the treatment of oxides and ferrites which contain iron and other metals |
Aug. 26, 1980 |
| 4168970 |
Purification of zinc sulphate solutions |
Sep. 25, 1979 |
| 4107265 |
Treating residues from the leaching of roasted zinc blende |
Aug. 15, 1978 |
| 4093526 |
Hydrometallurgical leaching and refining of nickel-copper concentrates, and electrowinning of copper |
Jun. 6, 1978 |
| 3957602 |
Recovery of copper from chalcopyrite utilizing copper sulfate leach |
May. 18, 1976 |
| 3933478 |
Recovery of zinc and copper from brass scrap |
Jan. 20, 1976 |
| 3930847 |
Recovery of copper by cementation |
Jan. 6, 1976 |
|
|
|
