The Kinetic Aspects of the Dissolution of Slightly Soluble Lanthanoid Carbonates

The problem of the complex use of mineral raw materials is significant in the context of many industries. In the rare earth industry, in the context of limited traditional domestic reserves and dependence on imports of lanthanides, an unambiguous and comprehensive solution has not yet been developed...

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Autores principales:	Tatiana Litvinova, Ruslan Kashurin, Ivan Zhadovskiy, Stepan Gerasev
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	carbonate isotherm dissolution rare earth metals technogenic raw materials lanthanides Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/dac927008dc64cb685564c937e9f4a22
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spelling	oai:doaj.org-article:dac927008dc64cb685564c937e9f4a222021-11-25T18:22:00ZThe Kinetic Aspects of the Dissolution of Slightly Soluble Lanthanoid Carbonates10.3390/met111117932075-4701https://doaj.org/article/dac927008dc64cb685564c937e9f4a222021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1793https://doaj.org/toc/2075-4701The problem of the complex use of mineral raw materials is significant in the context of many industries. In the rare earth industry, in the context of limited traditional domestic reserves and dependence on imports of lanthanides, an unambiguous and comprehensive solution has not yet been developed. Promising areas include the involvement of technogenic raw materials in the industrial turnover. The present study examines the kinetics of the dissolution process of poorly soluble lanthanide compounds when changing the parameters of the system. The results obtained reflect the dependence of the degree of extraction of lanthanide on the following variable parameters of the system: temperature, concentration of the complexing agent, and intensity of mixing. On the basis of the experiment, the values of the activation energy and the reaction orders were calculated. The activation energy of the carbonate dissolution process, in kJ/mol, was as follows: 61.6 for cerium, 39.9 for neodymium, 45.4 for ytterbium. The apparent reaction orders of the carbonates are equal to one. The prospect of using the research results lies in the potential to create a mathematical model of the process of extracting a rare earth metal by the carbonate alkaline method.Tatiana LitvinovaRuslan KashurinIvan ZhadovskiyStepan GerasevMDPI AGarticlecarbonateisothermdissolutionrare earth metalstechnogenic raw materialslanthanidesMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1793, p 1793 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	carbonate isotherm dissolution rare earth metals technogenic raw materials lanthanides Mining engineering. Metallurgy TN1-997
spellingShingle	carbonate isotherm dissolution rare earth metals technogenic raw materials lanthanides Mining engineering. Metallurgy TN1-997 Tatiana Litvinova Ruslan Kashurin Ivan Zhadovskiy Stepan Gerasev The Kinetic Aspects of the Dissolution of Slightly Soluble Lanthanoid Carbonates
description	The problem of the complex use of mineral raw materials is significant in the context of many industries. In the rare earth industry, in the context of limited traditional domestic reserves and dependence on imports of lanthanides, an unambiguous and comprehensive solution has not yet been developed. Promising areas include the involvement of technogenic raw materials in the industrial turnover. The present study examines the kinetics of the dissolution process of poorly soluble lanthanide compounds when changing the parameters of the system. The results obtained reflect the dependence of the degree of extraction of lanthanide on the following variable parameters of the system: temperature, concentration of the complexing agent, and intensity of mixing. On the basis of the experiment, the values of the activation energy and the reaction orders were calculated. The activation energy of the carbonate dissolution process, in kJ/mol, was as follows: 61.6 for cerium, 39.9 for neodymium, 45.4 for ytterbium. The apparent reaction orders of the carbonates are equal to one. The prospect of using the research results lies in the potential to create a mathematical model of the process of extracting a rare earth metal by the carbonate alkaline method.
format	article
author	Tatiana Litvinova Ruslan Kashurin Ivan Zhadovskiy Stepan Gerasev
author_facet	Tatiana Litvinova Ruslan Kashurin Ivan Zhadovskiy Stepan Gerasev
author_sort	Tatiana Litvinova
title	The Kinetic Aspects of the Dissolution of Slightly Soluble Lanthanoid Carbonates
title_short	The Kinetic Aspects of the Dissolution of Slightly Soluble Lanthanoid Carbonates
title_full	The Kinetic Aspects of the Dissolution of Slightly Soluble Lanthanoid Carbonates
title_fullStr	The Kinetic Aspects of the Dissolution of Slightly Soluble Lanthanoid Carbonates
title_full_unstemmed	The Kinetic Aspects of the Dissolution of Slightly Soluble Lanthanoid Carbonates
title_sort	kinetic aspects of the dissolution of slightly soluble lanthanoid carbonates
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/dac927008dc64cb685564c937e9f4a22
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The Kinetic Aspects of the Dissolution of Slightly Soluble Lanthanoid Carbonates

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