【摘要】 钨、钼的分离向来较为困难.前人对从含钼的钨酸盐溶液中除钼研究较多而对从含钨的钼酸盐溶液中除钨研究较少。本文发现采用伯胺与中性给体萃取剂的协萃体系从含钨的钼酸盐溶液中萃钨可以获得满意的分离效果.钨的单级萃取率大于99%,钨对钼的分离系数大于10~3,协萃系数大于100。负荷有机相中的钨易于用稀的氢氧化钠溶液反萃.研究并提出了该体系的萃取机理.更多还原

【Abstract】 Separation of molybdenum and tungsten is always a difficult problem. More work has been done on the removal of molybdenum in tungstate solutions while not much work has been reported on the separation of tungsten in moly- bdate solutions It has been found by the present work that tungsten in mo- lybdate solutions can be separated satisfactorily by the synergistic extraction with a mixture of primary amine and neutral donor extractants.The one-sta- ge extraction of W(?)can be higher than 99%.The separation factor of W(?)to Mo(?)can be better than 10~3 and the synergistic factor can be higher than 100.Low-concentration sodium hydroxide solutions can be used to strip the tungsten from the organic phase.Mechanism of extraction has been studied and proposed.更多还原