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研究了用Mextral336A改性Mextral204P及萃取稀土。结果表明:Mextral336A能够萃取盐酸,与盐酸按1∶1比例结合;Mextral336A添加到Mextral204P中可使后者萃取能力有较大提高,二者最佳配比为3∶2;加入到Mextral204P中的Mextral336A部分与Mextral204P发生反应生成铵盐;改性后的萃取剂在萃取过程中起萃取作用的主要是Mextral204P,而Mextral336A只萃取Mextral204P释放出的氢离子;改性后的萃取剂有较好的循环性。
The modification of Mextral204P with Mextral336A and extraction of rare earths were studied. The results showed that: Mextral336A can extract hydrochloric acid, and hydrochloric acid by 1: 1 ratio; Mextral336A added to Mextral204P can make the latter extraction ability has greatly improved, the best ratio of the two is 3: 2; Mextral204P added to Mextral336A Some react with Mextral204P to form ammonium salt. The modified extractant mainly plays the role of extraction during extraction Mextral204P, while Mextral336A extracts only the hydrogen ions released by Mextral204P. The modified extractant has good recycle .