Extraction of rare earths by undiluted [P666,14][NO3] and DEHEHP, and the recovery of rare earths from lamp phosphors
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Material Cycles and Waste Management"
DOI: 10.1007/s10163-019-00907-4
Abstract: Ionic liquids (ILs) have been extensively used for separation. However, most of the current reported undiluted IL-based extraction systems still suffer some issues, such as, the heavy loss and a slower extraction kinetic. In this… read more here.
Keywords: p666; lamp phosphors; rare earths; p666 no3 ... See more keywords
Assessing the bioavailability of dissolved rare earths and other trace elements: digestion experiments with aquatic plant species Lemna minor (“duckweed” reference standard BCR-670)
Sign Up to like & getrecommendations! Published in 2021 at "Applied Geochemistry"
DOI: 10.1016/j.apgeochem.2021.105025
Abstract: Abstract Reference material BCR-670 (Lemna minor, “duckweed”) is one of the very few plant reference materials for which certified data for all rare earths and yttrium (REY) are available. However, biological samples like plants or… read more here.
Keywords: trace elements; rare earths; bcr 670; reference ... See more keywords
Synergetic effect of rare-earths doping on the microstructural and electrical properties of Sr and Ca co-doped BaTiO3 nanoparticles
Sign Up to like & getrecommendations! Published in 2020 at "Ceramics International"
DOI: 10.1016/j.ceramint.2020.01.020
Abstract: Abstract Single-phase BST-BCT ceramic doped with different rare-earth materials (La, Gd, Dy, and Yb) have been prepared using a modified mechano-chemical activation technique. The modified BaTiO3 doped with different rare-earths elements have manifested improved characteristics… read more here.
Keywords: rare earths; change; doped batio3; effect ... See more keywords
Preparations and tailoring of structural, magnetic properties of rare earths (REs) doped nanoferrites for microwave high frequency applications
Sign Up to like & getrecommendations! Published in 2020 at "Ceramics International"
DOI: 10.1016/j.ceramint.2020.07.118
Abstract: Abstract Rare earths (Res) doped Mn spinel nanoferrites with nominal composition MnR0.2Fe1·8O4 (REs = Tb, Pr, Ce, Y and Gd) were synthesized using sol gel method. FTIR, XRD and FESEM were employed to evaluate the structure, phase,… read more here.
Keywords: high frequency; rare earths; earths res; res doped ... See more keywords
Grey monazite (rare earths) mining in centre of Spain: Characterization and pre-operational radiological evaluation.
Sign Up to like & getrecommendations! Published in 2018 at "Chemosphere"
DOI: 10.1016/j.chemosphere.2018.06.032
Abstract: A radiological evaluation associated to the future mining of grey monazite nodules enriched in light rare-earths, from a modest superficial deposit located in the centre of Spain, has been performed at pre-operational level, and the… read more here.
Keywords: grey monazite; rare earths; radiological evaluation; centre spain ... See more keywords
Reduction leaching of rare earth from ion-adsorption type rare earths ore: II. Compound leaching
Sign Up to like & getrecommendations! Published in 2017 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2017.07.006
Abstract: Abstract The colloidal sediment phase rare earth was little leached even if the pH of leaching agent reached 1.00, but part of it could be reduction leaching by the ferrous ion. To solve the problems… read more here.
Keywords: rare earths; rare earth; ascorbic acid; compound leaching ... See more keywords
Rare earths recovery by fractional precipitation from a sulfuric leach liquor obtained after phosphogypsum processing
Sign Up to like & getrecommendations! Published in 2020 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2020.105253
Abstract: Abstract The present work describes a process to recover rare earth elements (REEs) by selective precipitation with ammonia from phosphogypsum (PG) waste, a by-product of the phosphate industry. A pretreatment step was carried out with… read more here.
Keywords: recovery; sulfuric leach; liquor; rare earths ... See more keywords
The extraction of Ta, Nb and rare earths from fergusonite by using KOH sub-molten salt leaching
Sign Up to like & getrecommendations! Published in 2020 at "Hydrometallurgy"
DOI: 10.1016/j.hydromet.2020.105358
Abstract: Abstract It is very important to efficiently extract Ta, Nb and rare earths from polymetallic ore such as fergusonite. A new method combining an alkaline leaching of sub-molten salt (SMS) and an acid leaching is… read more here.
Keywords: earths fergusonite; rare earths; sub molten; molten salt ... See more keywords
Effects of Ce–Dy rare earths co-doping on various features of Ni–Co spinel ferrite microspheres prepared via hydrothermal approach
Sign Up to like & getrecommendations! Published in 2021 at "Journal of materials research and technology"
DOI: 10.1016/j.jmrt.2021.07.142
Abstract: Abstract The effects of Ce–Dy co-doping on the crystal structure, optical, dielectric, magnetic properties, and hyperfine interactions of Ni–Co spinel ferrite microspheres synthesized hydrothermally have been studied. A series of ferrites with the general formula… read more here.
Keywords: rare earths; effects rare; nico ferrite; spinel ferrite ... See more keywords
Synergistic extraction of heavy rare earths by mixture of α-aminophosphonic acid HEHAMP and HEHEHP
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Rare Earths"
DOI: 10.1016/j.jre.2018.07.013
Abstract: Abstract Synergistic extraction of heavy rare earths (REs) were investigated in chloride media by the mixture of (2-ethylhexylamino)methyl phosphonic acid mono-2-ethylhexyl ester (HEHAMP) and 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (HEHEHP). The maximum synergistic enhancement coefficients… read more here.
Keywords: heavy rare; hehehp; rare earths; extraction heavy ... See more keywords
Separation and recovery of associated rare earths from the Zhijin phosphorite using hydrochloric acid
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Rare Earths"
DOI: 10.1016/j.jre.2018.08.006
Abstract: Abstract The separation and extraction of associated rare earths from the Zhijin phosphorite mine is of great interest. Based on previous studies, the hydrolysis of phosphate ore using hydrochloric acid was systematically studied through extensive… read more here.
Keywords: earths zhijin; rare earths; using hydrochloric; hydrochloric acid ... See more keywords