— The progress in the field of mutual separation of rare earths from the rare earth ores and their recovery from rare earth containing industrial waste by the dry chemical vapour transport (CVT ...

 — To effectively recover rare earth from the rare-earth concentrate, a novel …

 — Rare earth metals also radiate light when stimulated. The trick is to tickle their f-electrons, de Bettencourt-Dias says. Using an energy source like a laser or lamp, scientists and engineers can ...

 — Phytoextraction and agromining use unique plants, called …

 — Rare earth elements are lanthanides, including scandium and yttrium, as defined by the International Union of Pure and Applied Chemistry (IUPAC), 1 which have shown an upward trend over the past few decades. 2, 3 Due to structural conditions, earth science problems, and scarcity, rare earths have gained considerable attention and …

 — Heavy rare earth elements (HREEs) such as Gd–Lu, Sc and Y are irreplaceable metals for a number of critical (including clean) technologies, but they are scarce. Ion-adsorption deposits, which...

 — The unique electromagnetic properties of rare earth elements (REEs) have …

 — A novel solid complex centrifugal separation (SCCS) process has been developed to enrich trace rare earth (RE) elements from the leaching liquor of ion-absorption RE minerals. When compared to liquid–liquid centrifugal extraction (LLCE), the proposed process employed extractant without a volatile diluen

Rare earth (RE) element bearing minerals are composed of at least one of the fifteen lanthanide elements or yttrium. Rare earth elements are used in a diverse range of applications including high strength magnets, phosphors, alloying elements, catalysts and polishing compounds (Crow, 2011, Meyer and Bras, 2011, Preinfalk and Morteani, 1986 ...

Rare earth elements recovery from red mud Upendra Singh, Sonali A. Thawrani and Anupam Agnihotri ... velocity of a solid particle in a centrifugal field. The feed enters the hydrocyclone

 — Phosphorite ore is a potential resource of rare earths (RE) as well as phosphate; therefore, the recovery of RE from wet-process phosphoric acid (WPA) is promising. This study investigated the influence of rotational speed, extractant concentration, flow ratio and phase contact time on the centrifugal extraction of RE from …

 — Inversion of the centrifugal field along the path of the orbit provides the necessary conditions for retention of the liquid-based stationary phase and simultaneous ... The identity of the rare earth element corresponding to each elution peak was confirmed by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) using the iCAP …

U.S. Geological Survey news release "Going Critical" The rare earth elements (REE) are a set of seventeen metallic elements. These include the fifteen lanthanides on the periodic table plus scandium and yttrium. …

 — A novel solid complex centrifugal separation (SCCS) process has been developed to enrich the trace rare earth (RE) elements from the leaching liquor of ion-absorption RE minerals.

 — Liquid–liquid chromatographic processes, in particular, separation of rare-earth metals, were proposed to be performed in a cascade of centrifugal mixer–settler extractors. Various modes of extraction chromatographic processes of rare-earth metal separation were theoretically analyzed.

 — For efficient extraction of the rare earth elements (REEs) from the rare …

 — Phosphoric acid sludge contains acid (~54% P 2 O 5) and solid precipitates including rare earth elements (REEs) at concentrations of ~2200 ppm.Low-cost recovery of valuable P 2 O 5 and simultaneous solid separation could be an economically feasible approach to recovering REEs while increasing the production of phosphoric acid. The …

 — The rare-earth elements (REEs) are strategic metals which are indispensable to the development of modern defence systems, electronic applications, and green technologies. The growing economic and strategic importance of these sectors, coupled with uncertainty in the global supply, has led to the development of many new deposits …

 — Rare earth concentration of 0. concentration of rare earth in the stripped solution was usually concentrated from about 1 g/L to more than 100 g/L. 82, 83 Moreover, Huang et al. 87 proposed using ...

 — When stimulated, rare-earth metals radiate light. The trick is to tickle their f-electrons, says de Bettencourt-Dias. An energy source such as a laser beam can jolt one f-electron in a rare earth element. The energy boosts the electron into an excited state. Later, it will drop back to its starting — or ground — state.

Phosphoric acid sludge contains acid (∼54% P2O5) and solid precipitates including rare earth elements (REEs) at concentrations of ∼2200 ppm. Low-cost recovery of valuable P2O5 and simultaneous solid separation could be an economically feasible approach to recovering REEs while increasing the production of phosphoric acid. The sludge, …

 — The beneficiation of rare earth element (REE) minerals may include many different beneficiation unit operations, but the final process choice typically depends on the inherent mineral characteristics. ... (equivalent to a centrifugal acceleration of 40 times Earth's gravitational acceleration) ... At each field strength the material was ...

DOI: 10.1016/j.hydromet.2020.105318 Corpus ID: 216337589; Non-ammonia enrichment of rare earth elements from rare earth leaching liquor in a magnesium salt system I: Precipitation by calcium oxide

Centrifugal Concentration of Rare Earth ... dominant unit operation for beneficiation of rare earth element‐bearing minerals. The high specific gravity of these minerals ...

 — Note: While the N42 neodymium magnet is used more commonly, the strongest available magnet is of grade N52. Neodymium and samarium—two of the 17 rare earth elements—are ferromagnetic, meaning that they have inherent magnetic properties and can be magnetized.These metals are first mined, refined, and then combined with …

 — The application of P 507 extractant in centrifugal extraction has also been studied by Zhou et al. 86 and Chi et al. 82 In general, through short-process extraction and stripping operations on centrifugal extractors, the concentration of rare earth in the stripped solution was usually concentrated from about 1 g/L to more than 100 g/L. 82, 83 ...

 — Abramov, A.M., Sobol', Yu.B., Galieva, Zh.N., Gerya, V.O., and …

 — Benefiting from the development of materials science, the reliability and availability of centrifugal extractors have been greatly improved, and the wide application in rare earth extraction is ...

 — MP Materials photo. This is part 4 of a 5-part special report on the health of the defense industrial base. Click here to download the full Vital Signs 2023 report. MOUNTAIN PASS, California — From the smartphone in your pocket to magnets powering a growing number of electric vehicles on the road, rare earth elements are the …

 — Introduction. Rare earth (RE) element bearing minerals are composed of at least one of the fifteen lanthanide elements or yttrium. Rare earth elements are used in a diverse range of applications including high strength magnets, phosphors, alloying elements, catalysts and polishing compounds (Crow, 2011, Meyer and Bras, 2011, …