Phase diagram of K2O-Nb2O5-H2O ternary salt-water system

ZHOU Hongming; ZHANG Yi; ZHENG Shili

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Phase diagram of K₂O-Nb₂O₅-H₂O ternary salt-water system

更新时间：2025-12-10

- Phase diagram of K₂O-Nb₂O₅-H₂O ternary salt-water system
- CIESC Journal Issue 3, Pages: 387-391(2005)
- 作者机构：
  
  中国科学院过程工程研究所,北京,100080
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 March 2005，
  
  Published：25 March 2005
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ZHOU Hongming, ZHANG Yi, ZHENG Shili. Phase diagram of K₂O-Nb₂O₅-H₂O ternary salt-water system[J]. CIESC Journal, 2005, (3): 387-391.
DOI：

ZHOU Hongming, ZHANG Yi, ZHENG Shili. Phase diagram of K₂O-Nb₂O₅-H₂O ternary salt-water system[J]. CIESC Journal, 2005, (3): 387-391. DOI：

摘要

采用等温溶解度法研究了30 ℃和80 ℃时K2O-Nb2O5-H2O三元水盐体系的平衡溶解度，并绘成了相应的相图.为氢氧化钾亚熔盐法处理低品位难分解铌钽矿的清洁冶金新工艺中涉及的氢氧化钾-水合六铌酸钾结晶分离提供了依据.

Abstract

The solubilities of the K2O-Nb2O5-H2O ternary salt-water system were studied at 30 ℃ and 80 ℃ by isothermal method

and the corresponding equilibrium diagram was plotted.These results might be used as the basis of crystallizing separation of potassium hexaniobate and KOH involved in the disposal of low-grade refractory niobium-tantalum ore by the KOH sub-molten method in the clean metallurgy process.

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