| 发明名称 | Systems and methods for improved metal recovery using ammonia leaching | ||
| 摘要 | Systems and methods for basic leaching are provided. In various embodiments, a method is provided comprising leaching a slurry comprising a copper bearing material and an ammonia leach medium, adding copper powder to the slurry, separating the slurry into a pregnant leach solution and solids, and performing a solvent extraction on the pregnant leach solution to produce an loaded aqueous stream. | ||
| 申请公布号 | US9187803(B2) | 申请公布日期 | 2015.11.17 |
| 申请号 | US201313804009 | 申请日期 | 2013.03.14 |
| 申请人 | FREEPORT MINERALS CORPORATION | 发明人 | Robertson Joanna M;Bolles Thomas R;Gertenbach Dennis D |
| 分类号 | C22B3/44;C22B3/14;C22B15/00;C22B23/00;C22B3/00 | 主分类号 | C22B3/44 |
| 代理机构 | Snell & Wilmer L.L.P. | 代理人 | Snell & Wilmer L.L.P. |
| 主权项 | 1. A method comprising: leaching a slurry comprising a copper bearing material and an ammonia leach medium; adding a reducing agent to the slurry, wherein the reducing agent comprises at least one of dendritic copper powder, molten sprayed copper powder, and metallic copper powder having a neutral oxidation state; separating the slurry into a pregnant leach solution and solids; and performing a solvent extraction on the pregnant leach solution to produce a loaded aqueous stream. | ||
| 地址 | Phoenix AZ US | ||