Release of iron-thorium cake from technological solutions after nitric acid opening of perovskite concentrate

Mudruk, Natalia; Korovina, Yu. V.; Elizarova, I. R.; Nikolaev, A. I.

doi:10.17580/tsm.2017.06.10

Cited by 2 publications

(3 citation statements)

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“…3 степень разложения концентрата, %: опыт 1 -70, опыт 2 -79,2, опыт 3 -89,7 и опыт 4 -85. Жидкие азотнокислотные объекты (фильтраты после азотнокислотного разложения перовскита) будут использованы для получения железоториевого кека и концентрата РЗЭ с использованием результатов ранее установленных при проведении поисковых исследований [5].…”

Section: таблицаunclassified

“…В этих условиях степень разложения концентрата не превышала 75 %. Опубликованы данные по гидрофторидной технологии разложения титансодержащих концентратов: перовскитового концентрата [5], лопарита [2], лейкоксена, рутила [6]. Однако реализация этих технологий не позволяет решить все проблемы, связанные с рациональным разделением основных компонентов, содержащихся в титано-редкометалльном сырье.…”

Section: Introductionunclassified

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Perspective raw material for the production of titanium and tinan-containing products

Shchukina,

Gerasimova,

Nikolaev

et al. 2023

TKSC RAS

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The mechanical activation of a hydrated product (GP), isolated during the treatment of perovskite with nitric acid, leads to the dispersion of particles, amorphization of their surface and the formation of microdefects, which significantly increases its chemical activity during interaction with sulfuric acid. Of interest is the addition of a fluoride compound (NH4HF2) to the concentrate prior to decomposition, initiating acid leaching of the components into the liquid phase. The obtained results can be used for realization of nitrogen-sulfuric acid variant of perovskite technology with obtaining titanium-containing and rare-metal products.

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Section: таблицаunclassified

Section: Introductionunclassified

Perspective raw material for the production of titanium and tinan-containing products

Shchukina,

Gerasimova,

Nikolaev

et al. 2023

TKSC RAS

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“…For instance, when neutralizing perovskite nitric acid decomposition solutions with a calcium hydroxide suspension with thorium cake, 17.1 % REE precipitated at drop by drop introduction, and 29.4-51.8 % REE at a higher consumption [48].…”

Section: Table 21mentioning

confidence: 99%

Development of methods for the recovery оf rare-earth elements from the mineral resources of the Arctic

Локшин¹,

Tareeva²

2021

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This paper summarizes the findings of the research aimed at the development of a new method for the integrated processing of naturally occurring and anthropogenic rare-earth raw materials based on the decomposition of rare-earth element (REE) concentrates in the presence of sulfocationite. Sorption and desorption of REE cations on a strongly acidic ion exchanger, sorbent regeneration, and REE recovery from eluates are discussed. A virtually zero-waste integrated process for apatite concentrate is proposed. The generalization of the research findings is aimed at demonstrating the prospects and universality of the proposed resource-saving and environmentally safe approach to the processing of various types of naturally occurring and anthropogenic rare-earth mineral feeds. The new methodology made it possible to develop a number of new hydrochemical processes united by a single approach, providing a qualitative increase in the processing performance of various types of rare-earth mineral feeds. The theoretical foundations of a unified approach to the processing of a wide range of minerals can significantly accelerate and cheapen the implementation of specific process circuits, significantly reduce reagent consumption and waste generation, simplify the separation of rare earth elements and impurities, and the separation of rare earth elements from naturally occurring radionuclides, fluorine, and phosphorus. The study was funded by the Kolarctic CBC 2014-2020 program, Project KO1030 SEESIMA — Supporting Environmental Economic and Social Impacts of Mining Activity.

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Release of iron-thorium cake from technological solutions after nitric acid opening of perovskite concentrate

Cited by 2 publications

References 0 publications

Perspective raw material for the production of titanium and tinan-containing products

Perspective raw material for the production of titanium and tinan-containing products

Development of methods for the recovery оf rare-earth elements from the mineral resources of the Arctic

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