...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Doklady earth sciences >Pyrochlore Solubility in NaF Solutions at 800℃ and p = 170-230 MPa
【24h】

Pyrochlore Solubility in NaF Solutions at 800℃ and p = 170-230 MPa

机译：Pyrochlore Solubility in NaF Solutions at 800℃ and p = 170-230 MPa

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

The solubility of pyrochlore (NaCa)Nb_2O_6F was studied experimentally in the NaF-H_2O system covering both the homogeneous region of hydrothermal solutions and the region of fluid immiscibility in the NaF concentration range from 0.1 to 16 mol kg~(-1) H_2O at 800℃ and a pressure of 170-230 MPa. It was shown that the content of Nb in solutions saturated with pyrochlore and fluorite is in the range from 10~(-5) to 10~(-3) mol kg~(-1) H_2O. A decrease in mNb is detected with an increasing NaF concentration in the region of fluid immiscibility. It is shown that the most likely forms of niobium in the studied fluoride solutions may be species of HNbO_3~0 and NbO_2F~0. A comparative analysis of the experimental data indicates that the concentration of Nb in equilibrium with pyrochlore and fluorite in 10~(-2)-10 m NaF solutions is 10-50 times higher than the concentration of Ta in equilibrium with microlite and fluorite.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号