摘要
研究了三种强碱性阴离子交换树脂 (D2 96 7,D2 90 7,2 0 1 7)在盐酸、硫酸、硝酸体系中对锆和铪的吸附行为。讨论了在不同浓度的盐酸或硫酸介质中 ,前述三种树脂对锆和铪吸附的最佳条件。结果表明 ,在盐酸或硫酸介质中 ,阴离子交换树脂对锆和铪络阴离子有明显的吸附作用 ,而在硝酸中基本上无吸附。且D2 96 7型树脂对锆和铪吸附效果最好 ,吸附率最高 ,实用性好。利用锆和铪在不同浓度盐酸或硫酸中吸附能力的较大差异 ,可望做到锆和铪的成功分离。
The adsorption of Zr(Ⅳ) and Hf(Ⅳ) by three strongly basic anion exchange resins (D296*7,D290*7,201*7)in HCl,H 2SO 4,HNO 3 has been studied.The optimum conditions of three resins adsorption for Zr(Ⅳ) and Hf(Ⅳ) in HCl or H 2SO 4 has been discussed.The Obvious sorption of Zr(Ⅳ) and Hf(Ⅳ) complex anion by anion exchange resin in HCl or H 2SO 4.But Zr(Ⅳ) and Hf(Ⅳ)are not adsorbed by resins in HNO 3. In three resins,the capacity of adsorption by D296*7 resin is best,Kd is highest.So we can take use of the difference of adsorption rate of Zr(Ⅳ) and Hf(Ⅳ) to separate Zr(Ⅳ) from Hf(Ⅳ).
出处
《有色矿冶》
2000年第1期53-56,共4页
Non-Ferrous Mining and Metallurgy
