http://hdl.handle.net/20.500.12128/10376
Title: | The Role of Mineral Matter in Concentrating Uranium and Thorium in Coal and Combustion Residues from Power Plants in Poland |
Authors: | Parzentny, Henryk R. Róg, Leokadia |
Keywords: | Th and U in minerals; feed coal; combustion residues; environment pollution |
Issue Date: | 2019 |
Citation: | Minerals, Vol 9 (2019), Art. No. 312 |
Abstract: | Based on the results of tests on feed coal from the Lublin Coal and Upper Silesian Coal Basin and its fly ash and slag carried out using X-ray di raction and X-ray fluorescence analysis, atomic emission spectroscopy, and scanning electron microscopy, it was found that in feeds, coal Th is associated with phosphates and U with mineral matter. The highest Th content was found in anhedral grains of monazite and in Al-Si porous particles of fly ash of <0.05 mm size; whereas in the slag, Th is concentrated in the massive Al-Si grains and in ferrospheres. U is mainly concentrated in the Al-Si surface of porous grains, which form a part of fly ash of <0.05 mm size. In the slag, U is to be found in the Al-Si massive grains or in a dispersed form in non-magnetic and magnetic grains. Groups of mineral phase particles have been identified that have the greatest impact on the content of Th and U in whole fly ash and slag. The research results contained in this article may be important for predicting the e ciency of Th and U leaching from furnace waste storage sites and from falling dusts to soils and waters. |
URI: | http://hdl.handle.net/20.500.12128/10376 |
DOI: | 10.3390/min9050312 |
ISSN: | 2075-163X |
Appears in Collections: | Artykuły (WNP) |
File | Description | Size | Format | |
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Parzentny_The_role_of_mineral_matter.pdf | 2,97 MB | Adobe PDF | View/Open |
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