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Potential for the Recovery of Selected Metals and Critical …

Slags from the Silesia–Cracow Upland (Poland), including ten historical slags (deposited in waste dumps) and four contemporary slags (from current production), were examined to compare their chemical and mineralogical properties as well as to assess their potential for the recovery of selected metals and critical raw materials. The historical slags …

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(PDF) Recent advances in the approaches to recover rare …

Recent advances in the approaches to recover rare earths and precious metals from E‐waste: A mini‐review May 2022 The Canadian Journal of Chemical Engineering 101(2)

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(PDF) Recovery of Rare Earth Elements from …

The growing demand for rare earth elements (REE) driven by their applications in modern technologies has caused the need to search for alternative sources of these elements as their extraction ...

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A Critical Review of the Enhanced Recovery of Rare Earth Elements …

Zhang W.R. Characterization and recovery of rare earth elements and other critical metals (Co, Cr, Li, Mn, Sr, and V) from the calcination products of a coal refuse sample. Fuel. 2020;267:117236. [Google Scholar] 14. Zhang W., Honaker R.Q. Rare earth elements recovery using staged precipitation from a leachate generated from coarse coal refuse ...

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Recovery of rare earth elements from acidic mine waters: …

Recovery of rare earth elements from acidic mine waters: An unknown secondary resource. Author links open overlay panel M. Hermassi a, M. Granados b, C. Valderrama c, ... the solution was filtered by using columns of 15 cm diameter and 30 cm length containing quartz sand (100–200 μm). Filtration was performed under gravity (down flow).

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Review on hydrometallurgical recovery of rare earth metals

Commercial extraction of rare earth metals has been carried out using different extractants viz. D2EHPA, Cyanex 272, PC 88A, Versatic 10, TBP, Aliquat 336, etc. Present paper reviews the methods used for the recovery of rare earth metals from primary as well as secondary resources, with special attention to the

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Process development to recover rare earth metals from monazite mineral

The escalating demand of rare earth metals (REMs) in various applications and their continuous depleting ores have laid emphasis to produce metals from their complex resources by developing energy efficient and eco-friendly processes. Present review reports the commercial processes based on pyro–hydro or hybrid techniques as well as systematic …

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Rare earth elements from waste | Science Advances

Rare earth elements (REEs) are strategic resources in modern electronics, clean energy, and automotive industries ().Concentrated aqueous acid leaching of the REE minerals, followed by biphasic solvent extraction, has been the dominant scheme for REE mass production ().However, the resource- and pollution-intensive production has a large environmental …

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Emerging technologies for the recovery of rare earth elements …

The demand for rare earth elements (REEs) has significantly increased due to their indispensable uses in integrated circuits of modern technology. However, due to the extensive use of high-tech applications in our daily life and the depletion of their primary ores, REE's recovery from secondary sources is today needed. REEs have now attracted attention to policymakers and …

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Recovery of rare-earth and radioactive elements from …

Global rare-earth element (REE) supply and recovery technologies have become an important issue because REEs are precious materials for economic growth, environmental protection, and national security [1], [2].REEs are chemically similar metallic elements, including the 15 lanthanides, yttrium, and scandium [3], which are widely used in high-tech industries, …

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Recovery of uranium, thorium and rare earth from industrial …

A low grade xenotime concentrate (typically assaying 57% light rare earths, 27% Y2O3 and 15.6% heavy rare earth) and a high grade xenotime (assaying 38% light rare earths, 41.8% Y2O3 and 20.55% ...

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(PDF) Process development to recover rare earth metals …

Present review reports the commercial processes based on pyro–hydro or hybrid techniques as well as systematic research for process development to recover rare earth from …

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A critical review of the recovery of rare earth elements from

Rare earth elements (REEs) are a family of fifteen metallic elements of the lanthanides, yttrium (Y), and scandium (Sc) that exhibit pronounced chemical similarities. However, REEs vary in their atomic structures and states, resulting in unique chemical and physical properties ( Cheisson and Schelter, 2019 ).

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Recovery of high-value rare earth elements from waste …

Rare earth elements are a nonrenewable strategic resource [1].However, undirected development in recent years has caused a serious waste of rare earth resources and irreversible damage to such resources, the supply gap of some rare earth elements is widening year by year [2].Recycling rare earth elements from urban or industrial waste is crucial to moving from a …

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(PDF) Rare earth elements from waste

Solvent extraction is the most widely used method for separation and purification of rare earth elements, and organic extractants such as di(2-ethylhexyl) phosphoric acid (P204) and di(1-methyl ...

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A review on complex utilization of mine tailings: Recovery of …

Strategies like extracting rare earth elements and making geopolymers from tailings were explored. Techniques like bioleaching and mechanical activation can improve tailings …

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Recovery of Rare Earth Elements from Mining …

The growing demand for rare earth elements (REE) driven by their applications in modern technologies has caused the need to search for alternative sources of these elements as their extraction from traditional deposits is limited.

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Recovery of critical materials from mine tailings: A …

With the ever-increasing of Rare Earth Elements (REEs) in various high technology applications, efficient recovery of REEs from liquid sources is becoming significantly important. In this work, ZIF-8 and UiO-66-NH 2 (U6N) are combined to form a 3D-agaric like core-shell structure hybrid material (U6N@ZIF-8-20), which exhibits good performance ...

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Recovery potential of rare earth elements from mining and industrial

REE uses are multiple, including advanced technologies, such as wind turbines, hybrid cars, mobile phones and magnets (EuRare, 2017).China provided 71% of the REE world's supply in 2018 (Shen et al., 2020).A growing demand for REE and the desire to limit their dependence on external supply has encouraged many countries to explore their own REE …

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Rare Earth Elements Recovery from Primary and Secondary …

Rare earth minerals (REMs) contain rare earth elements (REEs) that are important in modern technologies due to their unique magnetic, phosphorescent, and catalytic properties. However, REMs are not only non-renewable resources but also non-uniformly distributed on the Earth's crust, so the processing of REE-bearing secondary resources via recycling is one …

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A comprehensive review on treatment and recovery of rare earth elements

Recovery of rare earth metals through biosorption: an overview: Das N: Journal of Rare Earths: ... spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), extended X-ray absorption fine structure (EXAFS), and X-ray absorption near-edge structure (XANES) can be utilized for characterizing the adsorbent structure ...

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(PDF) Recovery of Light Rare Earth Elements (LREE) from …

Fig. 2 Elemental mapping of monazite sand s. ... This step improved the rare earth elements recovery in the precipitate from 90.2(1) and 101.68(3) %, while the impurities concentrations remained ...

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Recovery of Rare Earth Metals (REMs) from Primary and …

Rare earth metals (REMs) play a significant role in the manufacture of permanent magnets, fluorescent lamps, catalysts, medicines, super alloys etc. Recently, China, which controls 97% of world ...

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Recovery of rare-earth metals from aqueous solutions by …

The recovery of rare-earth elements is interesting because of their high market prices, along with their various industrial applications. 4 Recently, with the increasing demand for high-purity rare-earth compounds, the separation and purification of these elements have gained considerable attention in the scientific world. 7 Few countries ...

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Rare earth elements in sands collected from Southern …

Concentration of rare earth elements in (A) wet sand and (B) dry sand collected from seven sea beaches in Southern California. Mass of the elements is normalized by the dry weight of the sand. The ratio of LREEs/HREEs ranges from 0.74 to 5.72 with a mean value of 3.5, which depicts that LREEs are 3.5 times more enriched than the HREEs in the ...

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A review of greener approaches for rare earth elements recovery …

Rare earth elements (REE), which are used in high technology, clean energy, military defense, and medical technology products and have high magnetic, electronic, catalytic, and optical properties, are obtained from ores termed as a primary source or from mineral wastes, e-wastes and, wastewaters, are termed as secondary sources containing REE (Yuksekdag et …

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Recovery of Rare Earth Minerals and Elements from …

Rare earth elements (REEs) have been widely used as raw materials or additives for metal catalysts, phosphors, magnets, batteries, and light-emitting diodes (Binnemans et al., 2010; Zhang et al ...

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Rare Earth Elements Recovery from Primary and …

Flotation—a method that separates materials based on differences in their surface wettability—is a process applied for both mineral processing and recycling of REEs, especially when the particles are fine and/or a high-purity …

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Research on the Hierarchical Separation of Rare Earths and …

Lithium is an important non-renewable resource, and the study of the tiered separation of rare earths and lithium from rare earth molten salt slag is an important approach to solving the current global resource shortage. This article adopts a sulfuric acid leaching process and a lithium-containing solution iron lithium extraction separation process to recover lithium …

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Generating cash from tailings: A "green chemistry" approach …

Halifax-based Ucore Rare Metals has moved one small step forward in the race to extract rare-earth minerals from oil sands tailings. Oil sands deposits mined from the Athabasca Basin produces a variety of tailings streams that are mostly comprised of coarse silica sand. Contained within the sand is