Effects of Impurities on Ammonium Polyvanadate Precipitating
-
摘要: 采用酸性铵盐法沉钒，研究了沉钒液中的杂质离子Cr、P、Si、Cl-、SO42-对钒沉淀的影响。结果表明：Cr浓度的增大能够显著降低钒的沉淀率，对低浓度的钒溶液影响更显著；Si对沉钒率影响较小，P对钒的沉淀率有较大影响，当P浓度大于0.1 g/L时，沉钒率在75%以下；Cl-在低浓度条件下对沉钒率影响不大，但当NaCl浓度大于100 g/L时，沉钒率低于20%；SO42-对沉钒率影响不显著。Abstract: Effects of impurities such as Cr,P,Si,Cl-and SO42-on ammonium polyvanadate are investigated as ammonium polyvanadate is precipitated with acidic ammonium salt.The results show that the increase of Cr concentration significantly reduces the vanadium precipitation rate,especially for the vanadium liquid with low concentration;Si and SO42-exert little influence on the precipitation,while P has a noticeable effect as its concentration is above 0.1g/L,the precipitation rate of vanadium is below 75%;the effect of low-concentration Cl-is not notable,however,when the concentration of NaCl is above 100 g/L,the precipitation rate of vanadium is below 20%.
-
Key words:
- V2O5 /
- acidic ammonium salt /
- ammonium polyvanadate /
- impurity /
- precipitation rate of vanadium
-
点击查看大图
计量
- 文章访问数: 177
- HTML全文浏览量: 34
- PDF下载量: 15
- 被引次数: 0
下载:
