| 摘要 |
<p>An improved method for the recovery of copper from a copper sulfide concentrate, chalcocite, comprising partially leaching the chalcocite concentrate with an aqueous ammoniacal solution, such as ammonia and ammonium sulfate, with no substantial leaching of sulfur or conversion to sulfate, and extracting the copper from the resulting aqueous ammoniacal partial leach solution with a water insoluble extractant, preferably a beta-diketone, having a high copper loading, low ammonia loading capacity, typically dissolved in a water immiscible organic solvent.</p> |
