研究了钆元素在碳酸钠、碳酸氢铵溶液中的溶解性.钆元素在碳酸钠、碳酸氢铵溶液中随着反应时间的延长溶解量先增大后减小;提高碳酸钠和碳酸氢铵浓度也可以增加钆元素的溶解量;反应温度对钆元素在碳酸钠和碳酸氢铵溶液中的溶解性影响不同,表现为温度升高,钆在碳酸氢铵溶液中的溶解量减小,在碳酸钠溶液中增大.在碳酸氢铵溶液中加入氨水可以增大钆的溶解量,而在碳酸钠溶液中加入氢氧化钠使钆的溶解量减小.
参考文献
[1] | Aly M. Abdel-Rehim .An innovative method for processing Egyptian monazite[J].Hydrometallurgy,2002(1/3):9-17. |
[2] | Mari E. de Vasconcellos;S.M.R. da Rocha;W.R. Pedreira .Solubility behavior of rare earths with ammonium carbonate and ammonium carbonate plus ammonium hydroxide: Precipitation of their peroxicarbonates[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):426-428. |
[3] | Mari E. de Vasconcellos;Carlos A. da S. Queiroz;Alcidio Abrao .Sequential separation of the yttrium -- heavy rare earths by fractional hydroxide precipitation[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2004(1/2):405-407. |
[4] | M.E. de Vasconcellos;S.M.R. da Rocha;W.R. Pedreira .Enrichment of yttrium from rare earth concentrate by ammonium carbonate leaching and peroxide precipitation[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2006(1/2):200-203. |
[5] | 李永绣,黎敏,何小彬,辜子英,胡平贵,周雪珍.碳酸氢铵与氯化钇反应及结晶产物的组成和晶相类型[J].无机化学学报,2002(11):1138-1142. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%