MS  >> Vol. 7 No. 4 (July 2017)

    从RFCO3一次浸液中分离铁的工艺研究
    Studies on the Technique of Separation of Iron from a Leaching Solution RFCO3

  • 全文下载: PDF(680KB) HTML   XML   PP.482-491   DOI: 10.12677/MS.2017.74064  
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作者:  

秦少龙,张万明:西昌学院,四川 西昌

关键词:
RFCO3一次浸液分离RFCO3 Primary Infusion Iron Isolated

摘要:

本试验以RFCO3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N235和TBP两种萃取剂,研究其对稀土中杂质元素铁等非稀土杂质的分离效果。试验结果表明:N235的萃取效果要比TBP的萃取效果更好,在不同的萃取剂浓度和不同酸度的条件下N235萃取稀土中铁效果可达90%以上,其最佳效果为99.56%;而在相同浓度N235中分离铁的最佳酸度为c(H+) = 2.0 mol/L左右。但是从经济角度考虑,N235的成本要比TBP高,在工业上TBP要比N235应用更为广泛,故分离铁的最佳工艺,应该选用浓度为40%的TBP来萃取酸度为2.0 mol/L左右的浸液中的铁。

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 extraction 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 different 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.

文章引用:
秦少龙, 张万明. 从RFCO3一次浸液中分离铁的工艺研究[J]. 材料科学, 2017, 7(4): 482-491. https://doi.org/10.12677/MS.2017.74064

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