申请日期 | 2025-06-25 | 申请号 | US11012112 |
公开(公告)号 | US7270793B2 | 公开(公告)日 | 2007-09-18 |
公开国别 | US | 申请人省市代码 | 全国 |
申请人 | Ulrich Muller; Dieter Schmidt; Martin Zachau; Franz Zwaschka | ||
简介 | A process for producing a phosphate of the lanthanoids is described. The process is based on a two-jet precipitation, starting from separate reservoirs of a rare earth salt solution and a phosphate solution which are introduced simultaneously by separate feedlines into an aqueous acidified initial charge with stirring at a pH of 0≦pH≦1. After the solutions are added, the pH is raised to a pH of >2 to complete the phosphate precipitation. |
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