材料期刊网

介绍了从钒铬溶液中分离钒铬的方法,即萃取法、化学沉淀法、离子交换法、结晶法和电化学法,阐述了这5种分离方法的技术原理和工艺流程,分析并归纳了各种方法的优缺点.源自于攀枝花红格矿区的高铬型钒渣,经钠化焙烧-水浸后得到低钒高铬溶液,该溶液体系中杂质含量高,钒铬分离困难.通过综合比较后指出,化学沉淀法具有工艺流程短、操作简单、生产成本低等优点,分离提取钒铬容易实现产业化,对于该钒铬溶液体系的钒铬提取分离比较适用;结晶法分离钒铬,产品纯度高,具有较好应用前景.

The separation methods of vanadium and chromium from solution containing vanadium and chromium,including solvent extraction,chemical precipitation,ion exchange,crystallization and electrochemical methods were introduced.The technical principles and process flows of the 5 methods mentioned above were described,and the advantages and disadvantages of them were analyzed and summarized.The solution containing low concentration of vanadium and high content of chromium was obtained by sodium roasting and water leaching using the high chromium vanadium slag from Hongge mining area as raw material,and the high contents of impurities in the solution led to the difficulty in separation of vanadium and chromium.By comprehensive comparison,a conclusion is drawn that the chemical precipitation method is suitable for the separation of vanadium and chromium in the solution with low concentration of vanadium and high content of chromium,which has the advantages of simple process,low cost,easy operation and industrialization.Owing to the high purity of products,crystallization method has a good application prospect in the field of separation of vanadium and chromium.