摘要
研究了用Fe(OH)3吸附法从高含钨的钼酸钠溶液中分离钨的可能性及技术条件.试验表明,在pH=7.0和Fe(OH)3用量为WO2-4量2～4倍的条件下,每次吸附能分离70%～80%的钨.对WO3/Mo=0.445的物料而言,经一次吸附可使WO3/Mo降为0.17～0.18.试验中开发了一种以HCl+NH4Cl作中和剂将Na2MoO4溶液中和的新方法,采用这种方法可显著提高回收率及分离效果.
Study is made of the possibility and technical requirements of separating tungsten from high W- containing Na2MO4 solution by Fe （OH）3 adsorption. The results showed that each absorption resulted in 70 % ～80 % tungsten separation from molybdenum at pH = 7.0 and with consumption 2～4 times more than that of WO4^2- . When WO3/Mo = 0. 445, WO3/Mo is reduced down to 0.17～ 0.18 through the first absorption. A new method is developed to neutralize sodium molybdate solution with HCl and NH4Cl as neutralizer, which can notably improve recovery and separating effect.
出处
《稀有金属与硬质合金》
CAS
CSCD
2005年第3期1-3,共3页
Rare Metals and Cemented Carbides
关键词
Fe(OH)3吸附法
高钨钼酸钠
钨钼分离
Fe（OH）3 adsorption
high W- containing Na2MO4 solution
separation of tungsten and molybdenum
