Role of minerals properties on leaching process of weathered crust elution-deposited rare earth ore
查看参考文献32篇
文摘
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Granite belonged to intrusive rock and volcanic was extrusive rock. There may be many differences in their degree of weathering and mineral chemical composition. The present study investigated the minerals properties and the leaching mechanism of the granitic weathered crust elution-deposited rare earth ore from Longnan Rare Earth Mine area (LN ores) and volcanic weathered crust elution-deposited rare earth ore from Liutang Rare Earth Mine area (LT ores). The X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) were used to characterize the phase of rare earth ores. The particle size distributions and main composition of the ore were also presented in this paper. The leaching mechanisms of two kinds of rare earth ores were analyzed with different kinetics models and could be described by the shrinking-core model. They were all inner diffusion-controlled leaching processes. The leaching equation of the kinetics of the LN ores could be expressed as: 1-2/3η_(LN)-(1-η_(LN))~(2/3)=0.106r_0~(-0.377)e~((1.096×10~4)/(8.314T))t, leaching equation of kinetics of LT ores was 1-2/3η_(LN)-(1-η_(LN))~(2/3)=0.33×10~(-3)r_0~(-0.411)e~((4.640×10~3)/(8.314T))t. The rare earth leaching rate of LT ores was always lower in the same condition, and it would need more time and more (NH4)2SO4 consumption to achieve the same rare earth leaching efficiency, which would lead to more serious ammonia-nitrogen pollution. Therefore, magnesium salt was proposed as the leaching agent to eliminate ammonia-nitrogen pollution and further studies would be taken in the future. |
来源
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Journal of Rare Earths
,2015,33(5):545-552 【核心库】
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DOI
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10.1016/S1002-0721(14)60454-3
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关键词
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rare earths
;
leaching
;
granitic
;
volcanic
;
elution-deposited
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地址
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1.
National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals, Beijing, 100088
2.
(Beijing)School of Chemical Engineering, China University of Petroleum, Beijing, 102200
3.
School of Materials and Metallurgy, Northeastern University, Shenyang, 110004
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语种
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英文 |
文献类型
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研究性论文 |
ISSN
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1002-0721 |
学科
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冶金工业 |
基金
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Project supported by the National Science and Technology Support Program of China
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文献收藏号
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CSCD:5414420
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参考文献 共
32
共2页
|
1.
Huang X W. Status and trend of research & development of rare earth functional materials.
Chin. J. Rare Metals (in Chin.),2004,28(4):711
|
被引
2
次
|
|
|
|
2.
Cheng F X. Minimum amount of extracting solvent of AB/BC countercurrent extraction separation using organic feed.
J. Rare Earths,2014,32(5):439
|
被引
11
次
|
|
|
|
3.
Xiao Y F. Study on non-saponification extraction process for rare earth separation.
J. Rare Earths,2013,31(5):512
|
被引
24
次
|
|
|
|
4.
Su W.
Economic and Policy Analysis of China's Rare Earth Industry,2009
|
被引
1
次
|
|
|
|
5.
Xu G X.
Rare Earth,2002
|
被引
3
次
|
|
|
|
6.
Chen Z H. Global rare earth resources and scenarios of future rare earth industry.
J. Rare Earths,2011,29(1):1
|
被引
42
次
|
|
|
|
7.
Chi R A. Review of weathered crust rare earth ore.
J. Chin. Soc. Rare Earths (in Chin.),2007,25(6):641
|
被引
8
次
|
|
|
|
8.
Chi R A.
Chemical and Metallurgy Process of Weathered Crust Rare Earth Ore,2006
|
被引
1
次
|
|
|
|
9.
Luo Y X. Effects of temperature and ionic strength on the stabilities of the first and second fluoride complexes of yttrium and the rare earth elements.
Geochim. Cosmochim. Acta,2004,68(21):4301
|
被引
3
次
|
|
|
|
10.
Tian J. Optimisation of mass transfer in column elution of rare earths from low grade weathered crust elution-deposited rare earth ore.
Hydrometallurgy,2010,103:211
|
被引
25
次
|
|
|
|
11.
Moldoveanu G A. Recovery of rare earth elements adsorbed on clay minerals: II. Leaching with ammonium sulfate.
Hydrometallurgy,2013,131/132:158
|
被引
33
次
|
|
|
|
12.
Huang X W. Development of rare earth hydrometallurgy technology in China.
J. Rare Earths,2005,23(1):1
|
被引
53
次
|
|
|
|
13.
Qiu T S. Behavior of leaching and precipitation of weathering crust ion-absorbed type by magnetic field.
J. Rare Earths,2008,26(2):274
|
被引
13
次
|
|
|
|
14.
Tian J. Enhanced leachability of a lean weathered crust elutiondeposited rare-earth ore: effects of Sesbania gum filter-aid reagent.
Metall. Mater. Trans. B,2013,44(5):1070
|
被引
14
次
|
|
|
|
15.
Huang D H.
General Geology,2004
|
被引
1
次
|
|
|
|
16.
Wei G.
Guangxi Typical Rare Earth-Rich Weathering Crust Geological Characteristics and Genesis Study on the Mechanism,2013
|
被引
1
次
|
|
|
|
17.
Li Y F.
The Geochemical Study on the Bikou Volcanic Group in Northern Margin of the Yangtze Block,2006
|
被引
1
次
|
|
|
|
18.
Zhang X P. The study of in-situ leaching process on volcanic weathered crust elution-deposited rare earth ore.
Progress Report on China Nuclear Science and Technology,2009(20):66
|
被引
1
次
|
|
|
|
19.
Lu Y Z.
Soil Science,2006
|
被引
1
次
|
|
|
|
20.
Huang Z G.
The Red Weathering Crust in Southern China,1996
|
被引
1
次
|
|
|
|
|