CIESC Journal ›› 2005, Vol. 56 ›› Issue (3): 387-391.
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ZHOU Hongming;ZHANG Yi;ZHENG Shili
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Published:
周宏明;张懿;郑诗礼
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.
Key words: 水合六铌酸钾, 溶解度, 氢氧化钾, 相图
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.
关键词: 水合六铌酸钾, 溶解度, 氢氧化钾, 相图
ZHOU Hongming, ZHANG Yi, ZHENG Shili. Phase diagram of K2O-Nb2O5-H2O ternary salt-water system[J]. CIESC Journal, 2005, 56(3): 387-391.
周宏明, 张懿, 郑诗礼. K2O-Nb2O5-H2O三元水盐体系相图 [J]. 化工学报, 2005, 56(3): 387-391.
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