从RFCO3一次浸液中分离铁的工艺研究.pdf

Material Sciences 材料科学, 2017, 7(4), 482-491 Published Online July 2017 in Hans. /journal/ms /10.12677/ms.2017.74064 Studies on the Technique of Separation of Iron from a Leaching Solution RFCO3 Shaolong Qing, Wanming Zhang* Xichang College, Xichang Sichuan th th th Received: Jun. 19 , 2017; accepted: Jul. 11 , 2017; published: Jul. 14 , 2017 Abstract In this study, RFCO3 was oxidized and roasted, and then soaked with HCl for only once, and the immersion liquid was as a raw material. And the separation of non-rare earth impurities such as impurity elements in rare earth was studied under various conditions with two different extrac- tion agents N235 and TBP. The results showed that the extraction effect of N235 was better than that of TBP, and the effect of the extraction of rare earth iron of N235 was more than 90% under differ- ent extraction conditions and different acidity. The best effect was 99.56%. The optimum acidity + of separation iron in the same concentration of N235 is about c (H ) = 2.0 mol/L. However, from the economic point of view, N235 costs higher than the TBP, and the TBP is applied more widely than N235 in industry, so the best way to separate iron should be the concentration of TBP was 40% to extract the iron in the infusion which the acidity was about 2.0 mol/L. Keywords RFCO , Primary Infusion, Iron, Isolated 3 从RFCO 一次浸液中分离铁的工艺研究 3 秦少龙，张万明* 西昌学院，四川 西昌 收稿日期：2017年6月19 日；录用日期：2017年7月11 日；发布日期：2017年7月14 日 摘 要 本试验以RFCO 经氧化焙烧后用HCl浸后的一次浸液为原料，在各种不同的条件下，用N 和TBP两种萃 3