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.
The solubilities of the K2O-Nb2O5-H2O ternary salt-water system were studied at 30°C and 807deg;C 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.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2005年第3期387-391,共5页
CIESC Journal
基金
国家高技术研究发展计划项目 (2001AA647010)
国家自然科学基金项目 (20306031).~~
关键词
水合六铌酸钾
溶解度
氢氧化钾
相图
Crystallization
Metallurgy
Phase diagrams
Potassium compounds
Solubility
