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Potencial management of waste phosphogypsum with particular focus on recovery of rare earth metals

100%
Podbiera-Matysik K., Gorazda K., Wzorek Z.
Polish Journal of Chemical Technology
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2015
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vol. 17
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issue 1
55-61
EN
Phosphogypsum is a noxious industrial waste contributing to global environmental and economic problems. This publication focuses above all on phosphogypsum resulting from the processing of apatite as a phosphorus bearing compound, since it contains considerable amounts of lanthanides due to its magma origin. The possibilities of its waste-free processing are large, however they require the application of suitable technologies, frequently expensive ones, and allowing for the individual characteristics of the given waste. The research works conducted so far confirm the possibility of applying phosphogypsum for the recovery of lanthanides, and the process enhances the removal of remaining impurities, thanks to which the purified calcium sulphate (gypsum) may find application for the production of construction materials.
2
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Some Mechanical Properties of Experimental Mg-Al -RE-Mn Magnesium Alloys

88%
Braszczyńska-Malik K. N.
Archives of Foundry Engineering
|
2014
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issue 1
3
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Mechanical alloying of Mg-Zn-Ca-Er alloy

88%
Hrapkowicz B., Lesz S., Kremzer M., Karolus M., Pakieła W., Hrapkowicz B., Lesz S., Kremzer M., Karolus M., Pakieła W.
Bulletin of the Polish Academy of Sciences: Technical Sciences
|
2021
4
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Microstructure of Mg–Al–RE-type Experimental Magnesium Alloy Gravity Cast into Sand Mould

75%
Braszczyńska-Malik K. N., Przełożyńska E.
Archives of Foundry Engineering
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2016
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issue 2
5
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Effect of Bismuth and Rare Earth Elements on Graphite Structure in Different Section Thicknesses of Spheroidal Graphite Cast Iron Castings

75%
Glavas Z., Strkalj A., Maldini K., Kozina F.
Archives of Metallurgy and Materials
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2018
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vol. 63
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issue 3
6
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Processes and Technologies for the Recycling of Spent Fluorescent Lamps

75%
Kujawski W., Pospiech B.
Polish Journal of Chemical Technology
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2014
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vol. 16
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issue 3
80-85
EN
The growing industrial application of rare earth metals led to great interest in the new technologies for the recycling and recovery of REEs from diverse sources. This work reviews the various methods for the recycling of spent fluorescent lamps. The spent fluorescent lamps are potential source of important rare earth elements (REEs) such as: yttrium, terbium, europium, lanthanum and cerium. The characteristics of REEs properties and construction of typical fl uorescent lamps is described. The work compares also current technologies which can be utilized for an efficient recovery of REEs from phosphors powders coming from spent fluorescent lamps. The work is especially focused on the hydrometallurgical and pyrometallurgical processes. It was concluded that hydrometallurgical processes are especially useful for the recovery of REEs from spent fluorescent lamps. Moreover, the methods used for recycling of REEs are identical or very similar to those utilized for the raw ores processing.
7
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Performance of lead iodide nuclear radiation detectors with the introduction of rare earth elements

63%
Hassan M., Matuchova M., Zdansky K.
Open Physics
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2006
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vol. 4
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issue 1
117-123
EN
Lead iodide has been recognized as a promising material for room temperature radiation detectors. It has a wide band-gap (∼ 2.3 eV), high atomic numbers (82, 53) and it is environmentally very stable compared to mercuric iodide. Electrical and optical properties of lead iodide grown crystals purified under the influence of selected rare earth elements have been investigated. Photo-luminescence and capacitance-voltage measurements have been performed using different rare earth elements.
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