Scientific substantiation and development of innovative processes  for the extraction of zirconium and rare earth elements in the deep  and comprehensive treatment of eudialyte concentrate

Chanturia, V. A.

doi:10.31897/pmi.2022.31

Cited by 7 publications

(1 citation statement)

References 31 publications

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“…At the moment, the mineral resource sector both in Russia and in the world has to address a wide range of global challenges, including declining quality of mineral raw materials, fine dissemination of valuable component in ores, their specific structural-textural features, separable minerals' properties semblance, arduous mining, and geological conditions of occurrence, among others [1][2][3][4][5]. Moreover, among the negative factors, undoubtedly, is the exhaustibility of the mineral raw material base [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Justification for Criteria for Evaluating Activation and Destruction Processes of Complex Ores

et al. 2023

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The mining industry is faced with the problem of depletion of reserves of easily beneficiated minerals containing valuable metals. The characteristic features of the ores involved in processing are fine dissemination; low content of valuable components; and similar physical, chemical, surface, and technological properties of minerals, among others. Under such conditions, increasing the efficiency of mineral processing becomes of primary importance. Creating highly efficient, environmentally safe technologies on the basis of deep study of the material, chemical, and mineralogical composition, as well as using and developing methods and techniques for testing mineral materials at successive stages of raw material transformation, enable to solve such problems. Criteria for assessing the flow of technological processes are presented in the article. A complex criterion is substantiated and proposed for quantitative assessment of the degree of physical and energy impact at the stages of ore preparation and flotation enrichment of mineral raw materials. The criterion is calculated on the basis of activation energy data calculated by differential and integral kinetic methods. In addition, an empirical indicator was introduced into the complex criterion, which allows increasing the accuracy of the calculated criterion. This criterion not only allows to estimate the degree of influence from the position of averaged estimation on the full interval of degrees of transformation from 0 to 1, but also gives the possibility to consider the required number of degrees of transformation; for example, if it is necessary to make estimations on narrow temperature intervals. The calculation of empirical parameters for the obtained criterion is carried out before and after the application of physical–energetic methods of influence using thermal analysis.

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Section: Introductionmentioning

confidence: 99%

Justification for Criteria for Evaluating Activation and Destruction Processes of Complex Ores

et al. 2023

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Innovative Environmentally Safe Processes for the Extraction of Rare and Rare-Earth Elements from Complex Ores of Perplexed Material Composition

Chanturia,

Nikolaev,

Aleksandrova

2023

Geol. Ore Deposits

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Domestic and world tendencies of involvement in the processing of ores of rare metals (RMs) and rare-earth metals (REMs) are shown. It is shown that the main direction of innovative activity is the development and application of modern breakthrough technologies for complex processing of mineral raw materials with the production of high-quality products while minimizing environmental damage. The main deposits of rare and rare-earth metals are systematized from the standpoint of the content of the main components, concentrator minerals and the main enrichment methods. The main principal technological schemes of processing of some deposits of RMs and REMs in Russia (Lovozer, Tomtor, and Afrikand deposits) are given. Options for involving technogenic and off-balance raw materials in the processing in order to extract strategic metals are considered. It is substantiated that innovative environmentally friendly processes for the extraction of rare and rare-earth metals from complex ores of complex material composition are being actively developed in Russia at present.

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Russian zirconium industry: current issues in raw material supply

Khatkov

Boyarko

Bolsunovskaya

et al. 2023

Min.Sci.Technol. (RUS)

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The relevance of the research is connected with Russia’s long-term import dependence on zirconium raw materials.Goal of this research: to study the dynamics of commodity flows (production, import, export, consumption) of Russian zirconium raw materials; its prices (world and Russian); the raw material base of zirconium in Russia and the prospects for national production of its extraction and processing.Methods: statistical, graphic, logical.Results: Russia imports the vast majority (3.5–14.9 kt/year or 98–100 % of consumption) of consumed zircon concentrate. At the same time, almost all of the baddeleyite mined in Russia (4.0–9.3 kt/year or (96–100 % of production) is exported. Since 2018 has there been a decrease in its export supplies and an increase in the national consumption (up to 60 % of production).Russia has existing deposits, including a useful zirconium component, but all are connected with a certain economic and technological complexity in their development.In 2022, the national production of selective zircon concentrate began during the development of the Tugan titanium-zirconium deposit. This deposit covers up to 30 % of Russia’s demand for zirconium raw materials up to 2023. Furthermore, the construction of the 2-nd stage of the Tugan mining and processing plant will increase its supply to 15 kt/year. This will completely cover Russian demand for zirconium raw materials. Work is in progress on Zashikhinsky field preparation, where, in the course of enrichment of tantalum-rare-earth ores, up to 8 kt/year of zircon concentrate will be additionally extracted. The emerging trend of reducing Russia’s import dependence on zirconium raw materials, and in the future its complete elimination will allow consumption of zircon and zirconium oxides to be increased in the most demanding area of their use – for dampening the glaze of ceramic tiles. The presence of an independent and sufficient national mining base of zirconium raw materials will allow Russian production of metal zirconium, zirconium refractory and abrasive products, solid fuel energy cells and other zirconiumcontaining applications to be developed.

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Scientific substantiation and development of innovative processes for the extraction of zirconium and rare earth elements in the deep and comprehensive treatment of eudialyte concentrate

Cited by 7 publications

References 31 publications

Justification for Criteria for Evaluating Activation and Destruction Processes of Complex Ores

Justification for Criteria for Evaluating Activation and Destruction Processes of Complex Ores

Innovative Environmentally Safe Processes for the Extraction of Rare and Rare-Earth Elements from Complex Ores of Perplexed Material Composition

Russian zirconium industry: current issues in raw material supply

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