| 发明名称 | Process for obtaining highly pure litharge from lead acid battery paste | ||
| 摘要 | The present invention relates to the recovery of high purity litharge from spent lead acid battery paste at a low temperature which does not produce sulfur dioxide. In the process lead acetate or other lead salt is produced which is converted to high purity litharge by precipitation with a base. | ||
| 申请公布号 | US8980203(B1) | 申请公布日期 | 2015.03.17 |
| 申请号 | US201313902187 | 申请日期 | 2013.05.24 |
| 申请人 | Retriev Technologies Incorporated | 发明人 | Smith W. Novis;Kinsbursky Steven |
| 分类号 | C22B13/00;C22B3/00 | 主分类号 | C22B13/00 |
| 代理机构 | RatnerPrestia | 代理人 | RatnerPrestia |
| 主权项 | 1. A process for obtaining high purity litharge (PbO) from spent lead acid battery paste which comprises the steps of: treating lead acid battery paste with a reducing agent in an acid medium to form an aqueous slurry; combining a first base with the aqueous slurry; filtering the aqueous slurry to form a cake and washing the cake to form a washed cake; combining the washed cake with an acid to form a concentrated solution of a lead salt; filtering the solution to remove any insoluble material and to form a filtered solution; and combining a second base with the filtered solution at an elevated temperature to form litharge. | ||
| 地址 | Anaheim CA US | ||