Chemical Aspects of Scandium carbonate leaching from Red Muds
Red Muds (R.M.) – waste of bauxite reprocessing by the Bayer's method include many rare elements, such as Gallium, Titanium, Zirconium, Rare Earth Elements and Scandium, concentration of which in its reached 130 g/t. In the problem solving of Scandium extraction from R.M. get a two directions:...
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ftdoajarticles:oai:doaj.org/article:39d24d0a6b684c8db1f5b6d16efb228f 2023-05-15T15:52:52+02:00 Chemical Aspects of Scandium carbonate leaching from Red Muds S. I. Stepanov M. M. Аung Ht. Ye. Aung А. V. Boyarintsev 2019-03-01T00:00:00Z https://doi.org/10.20914/2310-1202-2018-4-349-355 https://doaj.org/article/39d24d0a6b684c8db1f5b6d16efb228f RU rus Voronezh state university of engineering technologies https://www.vestnik-vsuet.ru/vguit/article/view/1969 https://doaj.org/toc/2226-910X https://doaj.org/toc/2310-1202 2226-910X 2310-1202 doi:10.20914/2310-1202-2018-4-349-355 https://doaj.org/article/39d24d0a6b684c8db1f5b6d16efb228f Vestnik Voronežskogo Gosudarstvennogo Universiteta Inženernyh Tehnologij, Vol 80, Iss 4, Pp 349-355 (2019) red muds scandium leaching carbonate solutions hydrolytic polymerization Food processing and manufacture TP368-456 article 2019 ftdoajarticles https://doi.org/10.20914/2310-1202-2018-4-349-355 2022-12-31T02:55:50Z Red Muds (R.M.) – waste of bauxite reprocessing by the Bayer's method include many rare elements, such as Gallium, Titanium, Zirconium, Rare Earth Elements and Scandium, concentration of which in its reached 130 g/t. In the problem solving of Scandium extraction from R.M. get a two directions: immediate leaching of Scandium from R.M. and in passing Scandium recovery under complexing processing of R.M. The method of carbonate leaching of Scandium from R.M., which was work out in Institute of Solid State Chemistry Russian Academy of Sciences Urals Branch, include saturation by carbon dioxide of alkaline solutions, obtained after water process of R.M. and allow up to 20 % Scandium recovery in solutions. It is not effective for work out of technological scheme of R.M. processing. In recent paper, the chemical aspects of carbonate leaching of Scandium from R.M. in heterogeneous systems solid – liquid – gas carbon dioxide were investigated to determine of conditions for more Scandium recovery from R.M. It was shown, that Scandium leaching by aqueous sodium solutions without carbon dioxide gives small recovery yield and accompanied by alkaline hydrolysis under high pH in concentrated Na2CO3 solutions. Under saturation by carbon dioxide of carbonate R.M. pulp, the hydrolytic polymerization of hydroxocarbonates of Scandium and Aluminum in presence of carbonic acid proton take place. In the both process secondary precipitates are settle down and reduce of Scandium recovery yield. For increase of Scandium recovery from R.M. it is necessary to exclude the secondary precipitates under carbonate leaching with saturation by carbon dioxide. Article in Journal/Newspaper Carbonic acid Directory of Open Access Journals: DOAJ Articles Proceedings of the Voronezh State University of Engineering Technologies 80 4 349 355 |
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red muds scandium leaching carbonate solutions hydrolytic polymerization Food processing and manufacture TP368-456 |
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red muds scandium leaching carbonate solutions hydrolytic polymerization Food processing and manufacture TP368-456 S. I. Stepanov M. M. Аung Ht. Ye. Aung А. V. Boyarintsev Chemical Aspects of Scandium carbonate leaching from Red Muds |
topic_facet |
red muds scandium leaching carbonate solutions hydrolytic polymerization Food processing and manufacture TP368-456 |
description |
Red Muds (R.M.) – waste of bauxite reprocessing by the Bayer's method include many rare elements, such as Gallium, Titanium, Zirconium, Rare Earth Elements and Scandium, concentration of which in its reached 130 g/t. In the problem solving of Scandium extraction from R.M. get a two directions: immediate leaching of Scandium from R.M. and in passing Scandium recovery under complexing processing of R.M. The method of carbonate leaching of Scandium from R.M., which was work out in Institute of Solid State Chemistry Russian Academy of Sciences Urals Branch, include saturation by carbon dioxide of alkaline solutions, obtained after water process of R.M. and allow up to 20 % Scandium recovery in solutions. It is not effective for work out of technological scheme of R.M. processing. In recent paper, the chemical aspects of carbonate leaching of Scandium from R.M. in heterogeneous systems solid – liquid – gas carbon dioxide were investigated to determine of conditions for more Scandium recovery from R.M. It was shown, that Scandium leaching by aqueous sodium solutions without carbon dioxide gives small recovery yield and accompanied by alkaline hydrolysis under high pH in concentrated Na2CO3 solutions. Under saturation by carbon dioxide of carbonate R.M. pulp, the hydrolytic polymerization of hydroxocarbonates of Scandium and Aluminum in presence of carbonic acid proton take place. In the both process secondary precipitates are settle down and reduce of Scandium recovery yield. For increase of Scandium recovery from R.M. it is necessary to exclude the secondary precipitates under carbonate leaching with saturation by carbon dioxide. |
format |
Article in Journal/Newspaper |
author |
S. I. Stepanov M. M. Аung Ht. Ye. Aung А. V. Boyarintsev |
author_facet |
S. I. Stepanov M. M. Аung Ht. Ye. Aung А. V. Boyarintsev |
author_sort |
S. I. Stepanov |
title |
Chemical Aspects of Scandium carbonate leaching from Red Muds |
title_short |
Chemical Aspects of Scandium carbonate leaching from Red Muds |
title_full |
Chemical Aspects of Scandium carbonate leaching from Red Muds |
title_fullStr |
Chemical Aspects of Scandium carbonate leaching from Red Muds |
title_full_unstemmed |
Chemical Aspects of Scandium carbonate leaching from Red Muds |
title_sort |
chemical aspects of scandium carbonate leaching from red muds |
publisher |
Voronezh state university of engineering technologies |
publishDate |
2019 |
url |
https://doi.org/10.20914/2310-1202-2018-4-349-355 https://doaj.org/article/39d24d0a6b684c8db1f5b6d16efb228f |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Vestnik Voronežskogo Gosudarstvennogo Universiteta Inženernyh Tehnologij, Vol 80, Iss 4, Pp 349-355 (2019) |
op_relation |
https://www.vestnik-vsuet.ru/vguit/article/view/1969 https://doaj.org/toc/2226-910X https://doaj.org/toc/2310-1202 2226-910X 2310-1202 doi:10.20914/2310-1202-2018-4-349-355 https://doaj.org/article/39d24d0a6b684c8db1f5b6d16efb228f |
op_doi |
https://doi.org/10.20914/2310-1202-2018-4-349-355 |
container_title |
Proceedings of the Voronezh State University of Engineering Technologies |
container_volume |
80 |
container_issue |
4 |
container_start_page |
349 |
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355 |
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