| 发明名称 | Process for recovering zinc and/or zinc oxide II | ||
| 摘要 | A process for recovering zinc from a zinc containing material, the process including the steps of: leaching the zinc containing material with an alkaline lixiviant comprising an aqueous mixture of NH3 and NH4Cl, or ionic equivalent, having a NH4Cl concentration of between about 10 g/L and about 150 g/L H2O and a NH3 concentration of between 20 g/l H2O and 250 g/L H2O, to produce a zinc containing leachate; stripping ammonia from the leachate to produce a stripped liquor which includes a zinc containing precipitate, the stripped liquor having a NH3 concentration of between 7 and 30 g/L H2O; and recovering the zinc from the stripped liquor. | ||
| 申请公布号 | US9284624(B2) | 申请公布日期 | 2016.03.15 |
| 申请号 | US201113988911 | 申请日期 | 2011.11.23 |
| 申请人 | METALLIC WASTE SOLUTIONS PTY LTD. | 发明人 | Shaw Raymond Walter;Barr Neal |
| 分类号 | C22B19/34;C22B7/00;C22B7/02;C22B3/00;C22B19/00 | 主分类号 | C22B19/34 |
| 代理机构 | Cantor Colburn LLP | 代理人 | Cantor Colburn LLP |
| 主权项 | 1. A process for recovering zinc from a zinc containing material, the process including the steps of: leaching the zinc containing material with an alkaline lixiviant comprising an aqueous mixture of NH3 and NH4Cl, or ionic equivalent, having a NH4Cl concentration of between about 10 g/L and about 150 g/L H2O and a NH3 concentration of between 20 g/l H2O and 250 g/L H2O, to produce a zinc containing leachate precipitate in the form of at least one of zinc hydroxide (Zn(OH)2), zinc hydroxy chloride (Zn5(OH)8Cl2.H2O), zinc oxide (ZnO) or combination thereof; stripping ammonia from the leachate to produce a stripped liquor which includes a zinc containing precipitate, the stripped liquor having a NH3 concentration of between 7 and 30 g/L H2O; and recovering the zinc from the stripped liquor. | ||
| 地址 | AU | ||