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| 1 | Clean separation technologies of rare earth resources in China显示文摘After a review on the conventional separation process of rare earths (RE), hyperlink extraction technology was introduced and a potential process was proposed for clean separation of RE. A great amount of acid, base and water was consumed in the conventional RE separation process which included the procedures of raw material dissolving, extraction separation and precipitation. Therefore hyperlink extraction technology had been developed, by which the repeated consumption of acid and base could be avoided during the extraction process. And based on the theory and successful applications of the hyperlink extraction technology, we proposed the integral hyperlink process in which the intermediate acid resulted in individual procedures would be recycled and reused after being treated. The proposed process would make it feasible to consume no chemicals except for oxalic acid, and so could be a promising clean separation technology with a significant reduction on consumption and emission. | 廖春生 吴声 程福祥 王嵩龄 刘艳 张玻 严纯华 | 2013 | Journal of Rare Earths2013，31，4： | 11 |
| 2 | Amorphous forming ranges of Al-Fe-Nd-Zr system predicted by Miedema and geometrical models显示文摘A method based on the semi-empirical Miedema model and a geometrical model was used to study the glass forming abilities(GFA) and the amorphous forming ranges of Al-Fe-Nd-Zr system and its constituent ternary systems.The amorphous forming composition ranges were analyzed based on different criteria such as ΔGam-ss and PHSS(PHSS=ΔHchem(ΔSC/R)(ΔSσ/R)) for Al-Fe-Nd system.The predicted amorphous forming range was in good agreement with the experimental results.The results showed that the criterion of ΔGam-ss was more accurate,and agreed well with the experiment results.The Gibbs free energy difference ΔGam-ss and parameter PHSS were then used to predict the amorphous forming composition range for the rest of the constitutive ternary systems of Al-Fe-Nd-Zr.In addition,the amorphous forming composition ranges of the(Al-Fe-Zr)100–x Ndx(x=50,60,70) systems were predicted by ΔGam-ss and the modified parameter PHSS.The Gibbs free energy of Al10(Fe1–x Zrx)30Nd60 were also calculated.The GFA parameter PHSS indicated that the composition with the highest GFA was Al33.5Fe13.5Zr3Nd50 for the(Al-Fe-Zr)50Nd50 system,Al28.8Fe10Zr1.2Nd60for the(Al-Fe-Zr)40Nd60 system and Al22.8Fe6.9Zr0.3Nd70 for the(Al-Fe-Zr)30Nd70 system,and the results suggested that those alloys with high content of Al had higher GFA.The appropriate content of neodymium and zirconium resulted in the lower value of PHSS and increased the GFA obviously. | 张雷 陈红梅 欧阳义芳 杜勇 | 2014 | Journal of Rare Earths2014，32，4： | 3 |
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