Recovery of Rare Earth and Critical Metals from ... - Springer
2022.2.15 Synopsis: This study explores the selective reduction of metal oxides in REE-Nb-Fe deposits using carbothermic and aluminothermic experiments, identifying favorable conditions for mineral processing, extraction and enrichment, as well as
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A green and efficient technology to recover rare earth ... - Nature
2022.10.31 20 Citations 71 Altmetric Metrics Abstract Heavy rare earth elements (HREEs) such as Gd–Lu, Sc and Y are irreplaceable metals for a number of critical
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Process development to recover rare earth metals from
2015.8.1 1. Introduction Rare earth metals (REMs) are group of 15 elements of the lanthanide series including Sc and Y, which are mainly classified into two groups based
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Emerging technologies for the recovery of rare earth
2020.7.2 This paper summarizes the recent progress for the recovery of REEs using various emerging technologies such as bioleaching, biosorption, cryo-milling,
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Recovery of rare-earth metals from aqueous solutions by
2020.4.1 The recovery of rare-earth metals (REMs) is of great economic and environmental interest, because of their high market prices and various industrial
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Recent process developments in beneficiation and metallurgy of
2023.3.29 Abstract Rare earth elements (REEs) are irreplaceable materials supporting low-carbon technology and equipment, and their commercial demand and
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Recovery potential of rare earth elements from mining
2021.2.1 Recovery of rare earths and base metals from spent nickel-metal hydride batteries by sequential sulphuric acid leaching and selective precipitations J. Power
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A facile method for the simultaneous recovery of rare-earth
The proposed procedure enables a selective REE recovery and a simultaneous Fe metal deposition in only two processing steps, with the total re-use of the electrolyte. The
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Eng Free Full-Text Recovery of Rare Earth Elements
Abstract. The rapid depletion of high-grade rare earth elements (REE) resources implies that future supplies may be augmented with low-grade ores, tailings, and other unconventional resources to meet cut-off
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Metals Free Full-Text Recovery of Rare Earth
2022.8.31 Recovery of Rare Earth Elements through Spent NdFeB Magnet Oxidation (First Part) by Srecko Stopic 1,*, Buse Polat 1, Hanwen Chung 1, Elif Emil-Kaya 1,2,3, Slavko Smiljanić 4, Sebahattin Gürmen 2
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2015.8.1 Bulk heavy mineral concentrate are also produced from fine grained beach sand deposits by flotation using fatty acid or phosphoric acid esters as collectors depending upon the ease of ... Processing of Korean monazite concentrate for the recovery of rare earth metals (REMs) Jr. Ind. Chem. Soc., 90 (2013), pp. 2105-2110. View in ...
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Recovery potential of rare earth elements from mining and industrial ...
2021.2.1 Recovery of rare earths and base metals from spent nickel-metal hydride batteries by sequential sulphuric acid leaching and selective precipitations J. Power Sources , 211 ( 2012 ) , pp. 184 - 191 , 10.1016/j.jpowsour.2012.03.064
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Recovery of rare-earth metals from aqueous solutions by
2020.4.1 Technologies for recovery of rare-earth metals. 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 ...
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History and Future of Rare Earth Elements
The rare earths are 17 metallic elements, located in the middle of the periodic table (atomic numbers 21, 39, and 57–71). These metals have unusual fluorescent, conductive, and magnetic properties—which make them very useful when alloyed, or mixed, in small quantities with more common metals such as iron. Geologically speaking, the rare ...
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Recovery of rare earth elements from the sulfothermophilic red
2014.10.7 The demand for rare earth elements has increased dramatically in recent years because of their numerous industrial applications, and considerable research efforts have consequently been directed toward recycling these materials. The accumulation of metals in microorganisms is a low-cost and environmentally friendly method for the
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Recovery of rare earths, lithium and fluorine from rare earth
2021.8.15 To solve the problem of rare earths (RE) lithium (Li) and fluorine (F) recovery in rare earth molten salt electrolysis slag, a recovery method was developed based on magnetic separation, sulfuric acid leaching, HF recycling, water leaching, fluorination precipitation. First, RE, Li and iron-containing phases in a slag sample were
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Journal of Rare Earths ScienceDirect by Elsevier
Chinese Society of Rare Earths. . It is a unique English-language learned journal that publishes works on various aspects of basic theory and applied science in the field of rare earths (RE). The journal accepts original high-quality original research papers . Browse open Calls for Papers.
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Recovery of rare earths and base metals from spent nickel-metal
2012.8.1 In addition to ecological risks, no entry of spent batteries in the recycling process involves a loss of metals such as nickel, manganese, zinc but more important are rare earths. Nowadays China provides 97% of world demand for RE and the authorities decided to reduce exports from 50,000 tons to 30,000 tons and in July 2010 these have
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Recovery of Rare Earths, Precious Metals and Bioreduction of
2020.3.5 For many decades, toxicity of metals has been recognised due to documented evidence in plants, animals, water and/or humans. Unlike toxic heavy metals which are relatively abundant, some metals are scarce and unevenly distributed in the earth crust. Rare earth...
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Recovery of Rare Earths and Other Valuable Metals From
2016.8.11 The long-term storage of bauxite residue (red mud) is harmful to the environment and the tailing ponds also cover large areas. At the moment there is no large-scale utilization of bauxite residue. However, some bauxite residues contain considerable concentrations of rare-earth elements (REEs) and the recovery of these REEs together
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Biohydrometallurgy for Rare Earth Elements Recovery from
2021.10.14 Biohydrometallurgy recovers metals through microbially mediated processes and has been traditionally applied for the extraction of base metals from low-grade sulfidic ores. New investigations explore its potential for other types of critical resources, such as rare earth elements. In recent times, the interest in rare earth
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Recovery of rare and precious metals from urban mines A review
Pd, Os, Ir, and Pt. Rare metals (RMs) are divided into rare light metals, rare refractory metals, rare scattered metals, rare earth metals and rare radiation metals. The reserves of the precious metals Au and Ag are abundant in China, ranking eighth and sixth in the world, respectively [1,2]. The major application areas for PMs are listed in ...
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Hydrometallurgical Recovery of Rare Earth Elements from Mine
2018.5.21 The present study proposes three distinct processes to recycle rare earth elements (REE) from two low-grade secondary resources: REE-containing mine tailings and ferrous scrap from shredded waste of electrical and electronic equipment (WEEE). The first developed process extracts both REE and phosphorus from the apatite mineral
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An Environmentally Friendly Way To Extract Rare Earth Elements
2021.10.11 A new method improves the extraction and separation of rare earth elements—a group of 17 elements critical for technologies such as smart phones and electric car batteries—from unconventional sources. New research led by scientists at Penn State and the Lawrence Livermore National Laboratory (LLNL) demonstrates how a
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Rare earths Institute for Rare Earths and Metals
Magnetic properties. The magnetic properties of rare earth metals, alloys and compounds are highly dependent on the number of unpaired 4f electrons. The metals without unpaired electrons (scandium, yttrium, lanthanum, lutetium, and bivalent ytterbium) are weakly magnetic, as are many of the other non-earth metals.
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Recovery of critical materials from mine tailings: A comparative
2019.5.1 Our society heavily depends on the availability of raw materials. Technology metals such as rare earth elements (REEs) are vital in many applications. Because their virgin mining and production is constrained by a multitude of factors, future exploitation of secondary sources is strongly considered.
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A Review of Rare-Earth Elements Extraction with Emphasis on
2020.9.23 Primary economical deposits of rare-earth elements (REEs) are exhausting all over the world, and it has become necessary to find new sources and methods for their extraction. In addition, increasing the application of REEs in modern technological society has increased its demand globally. One of the important
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New, environmentally friendly method to extract and separate rare earth
2021.10.8 A new method improves the extraction and separation of rare earth elements—a group of 17 elements critical for technologies such as smart phones and electric car batteries—from unconventional ...
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微生物技术在稀土资源利用中的研究进展 - USTB
2019.9.12 Overview of microbial technology in the utilization of rare earth resources. 摘要: 主要介绍了稀土资源的重要作用及利用现状，对我国的稀土矿分布及特征进行概述，并提出稀土开采存在的问题及微生物采矿的优势。. 回顾利用微生物进行稀土矿开采的发展进程，总结其研究进展 ...
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Metals Free Full-Text Recovery of Rare Earth Elements from
2022.9.27 This paper proposes a pyrometallurgical recycling method for end-of-life NdFeB magnets by oxidizing them in air and subsequently smelting them. The smelting process enabled the recovery of rare earth elements (REEs), producing a new reach concentrate separating the iron as a metallic phase. From the products of smelting, the
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