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germanium magnetic separation

Extraction Behavior and Purification of Germanium

2022.4.6  The recovery of germanium from low-grade ores and secondary resources requires the development of new separation and purification techniques. In this work, the solvent extraction (SX) behavior

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Germanium extraction from lignite using gravity separation

Germanium Gravity separation Low-temperature sintering Enrichment Chlorinated distillation 1. Introduction Germanium (Ge), a rare metal, has excellent optoelectronic features and is commonly regarded as a crucial metal. It is widely used in solar cells, semiconductor materials, and advanced electronic and optical devices [1], [2], [3], [4].

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Review on resources and recycling of germanium, with

2021.4.20  Therefore, researchers have made efforts to exploit new methods for germanium separation, among which solvent extraction is appearing to be a promising choice. It is well known that solvent extraction has advantages in terms of high efficiency, high selectivity, broad spectrum adaptability, large throughput, among others.

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A novel solvent extraction system to recover germanium

2023.1.10  Herein, a novel solvent extraction system for germanium recovery was proposed in this study. The optimum operating conditions for germanium separation and extraction behavior of germanium, arsenic, iron, cadmium, zinc were explored firstly. Then the germanium extraction capacity and phase disengagement performance of the new

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Highly selective separation of germanium from sulfuric

Germanium (Ge) is a greyish-white brittle semi-metal. The common oxidation states of germanium are Ge(II) and Ge(IV), where Ge(IV) represents the stable redox state. Notable germanium compounds include GeO 2 and GeS 2. Germanium can substitute silicon in silicate minerals due to the similar ionic radii (Ge(IV) 0.5 Å and Si(IV) 0.4 Å) and ...

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Separation of germanium and magnesium isotopes in a

2017.8.29  SEPARATION OF GERMANIUM AND MAGNESIUM ISOTOPES IN A SMALL ELECTROMAGNETIC SEPARATOR V. M. Gusev. D. V. Chkuaseli and M. I. Guseva A me~od is described for the electromagnetic separation of germanium and magnedum isotoFcs in a small electromagne- tic separator with a focusing angle of 180:

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Gallium and germanium extraction and potential recovery

2022.12.15  During SMR, the limonite transformed into magnetite with strong magnetism, and structures of iron ore became loose and porous. These changes enhanced the effect of magnetic separation and separation of apatite from magnetite. In general, this work provides a fresh approach to the efficient utilization of high-phosphorus waste limonite.

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Separation of gold and other rare materials from

2019.3.8  In a recent study, a mixture of particles composed of various weak magnetic materials was magnetically separated into groups of different materials with no magnetic attachments on the particles...

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The germanium quantum information route Nature

2020.12.21  Nature Reviews Materials - Germanium is a promising material to build quantum components for scalable quantum information processing. This Review examines progress in materials science and devices...

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A novel solvent extraction system to recover germanium

2023.1.10  The optimum operating conditions for germanium separation and extraction behavior of germanium, arsenic, iron, cadmium, zinc were explored firstly. ... the extraction mechanism of germanium and germanium extraction complexes with N1923-HCA were studied via nuclear magnetic resonance (NMR), Fourier transform infrared

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A Review on Germanium Resources and its Extraction by ...

2020.5.5  Various beneficiation techniques such as flotation [128], calcination [101], bioleaching [129], conversion to nanoparticles [130], electrostatic and selective magnetic separation [131,132 ...

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Magnetic Separation SpringerLink

Abstract. Magnetic separation utilizes the force of a magnetic field to produce differential movement of mineral particles through a magnetic field; this and the fundamental differences in the magnetic susceptibility of minerals constitutes the basis of separation to effectively obtain purification or concentration of mineral products.

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(PDF) Electrostatic and magnetic separations for the

2019.11.19  The type of phases in the four magnetic separation products was determined by X-ray diffraction (XRD). Three grain classes were tested: 2.00 - 0.56, 0.56 - 0.32 and 0.32 - 0.10 mm. Based on the ...

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Magnetic particles for the separation and purification of

2006.10.25  Magnetic separation of nucleic acids has several advantages compared to other techniques used for the same purpose. Nucleic acids can be isolated directly from crude sample materials such as blood, tissue homogenates, cultivation media, water, etc. ... (DE 100 13 955 A1 and EP 1 274 745 A1) or a germanium-containing compound (DE

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Preconcentration–separation of germanium at ultra trace

2015.4.25  A separation–preconcentration procedure for germanium has been presented. The optimum conditions including pH, sample volume, sample-eluent flow rates, sample and matrix effects for adsorption of germanium(IV) on polysulfone membrane filter were investigated prior to spectrophotometric determination of germanium as Ge(IV)-9

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Germanium: A review of its US demand, uses, resources

2021.11.15  The primary sources of worldwide germanium production are Zn-refinery residue and coal fly ash, with recycling of industrial scraps being the secondary source [12].Globally, the main producer of germanium is China, accounting for 80% of world production during 2012–2016 [7].Other producers are Russia, Finland, US, Japan, and

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丁古巧-中国科学院大学-UCAS - SEP 教育业务接入平台

（2） Graphene quantum dots-based magnetic relaxation switch involving magnetic separation for enhanced performances of endoglin detection using ultra-low-field nuclear magnetic resonance relaxometry, SENSORS AND ACTUATORS: B. CHEMICAL, 2023

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SEPARATION AND CONCENTRATION OF ZINC, GALLIUM, GERMANIUM

Authors: Novikov, A I; Shchekoturova, E K Publication Date: Sat Jan 01 00:00:00 EST 1972 Research Org.: Originating Research Org. not identified OSTI Identifier: 4657879

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Hydrogeochemical and biomedical insights into germanium

2018.1.3  Germanium and human health. Germanium is naturally present in water and food, as it exists in soil, rocks, animals, and plants in organic and inorganic forms (Kang et al. 2001).Moreover, it is used in industry as a semiconductor and in the manufacture of phase-change optical magnetic discs, such as DVD-RAM and DVD-RW (Lin et al.

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Shaping the role of germanium vacancies in germanium

2020.10.2  Germanium telluride (GeTe), a semiconductor with a rhombohedral-to-cubic structural phase transition and a high concentration of intrinsic vacancies on the Ge sublattice, has recently attracted ...

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Gallium and germanium extraction and potential recovery

2022.12.15  Extraction experiments conducted in 0.5 M H2 SO 4, 1 M HNO 3, and 1 M HCl were used to simulate the hydrometallurgical recovery in view of the potential recovery of Ga and Ge. The leaching of Ga and Ge (and other valuable metals: Zn, Pb) was investigated as a function of time (2–12 h), temperature (25 and 70 °C), and particle size

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Analytical product study of germanium-containing

2004.9.14  Beta-carboxyethylgermanium sesquioxide forms monovalent anions in basic aqueous solution [11].For the separation by anion exchange a retention time of around 175 s was observed.Although Ge(IV) was the stable oxidation state for inorganic germanium, the forms existing in aqueous solution are more complicated and GeO 3 2−

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Selective extraction of zinc, gallium, and germanium from

2019.1.1  The leaching experiments were conducted in 300 mL round-bottom flasks by magnetic stirring at 400 rpm. The temperature was set and controlled at 80 °C by a water bath. ... Recovery and separation of gallium(III) and germanium(IV) from zinc refinery residues: part I: Leaching and iron(III) removal. Hydrometallurgy, 169 (2017), pp. 564-570.

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Application of vacuum reduction and chlorinated distillation to

2017.1.5  Separation and recovery of arsenic, germanium and tungsten from toxic coal ash from lignite by sequential vacuum distillation with disulphide. 2024, Environmental Pollution ... (FTIR) and solid state nuclear magnetic resonance (SSNMR) were performed to characterize the grafting way of Chinese gallotannin on the chitosan matrix. It was clearly ...

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The germanium quantum information route Nature

2020.12.21  Germanium is a promising material to build quantum components for scalable quantum information processing. ... Many applications of Ge-based devices require the presence of a magnetic field ...

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Fast Coadsorption and Selective Separation of Gallium(III)

2019.8.30  In order to selectively separate and fast recover gallium(III) and germanium(IV), 3D hierarchical porous hoya-like α-FeOOH (3D-α-FeOOH) was obtained via a facile one-step synthesis process. Meanwhile, rod-shaped α-FeOOH and β-FeOOH were also prepared for systematically clarifying the excellent adsorption ability of 3D-α

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江西理工大学材料冶金化学学部导师教师师资介绍简介-刘付朋 ...

2014.9.15  Recovery and separation of gallium(III) and germanium(IV) from zinc refinery residues. PartⅡ: Solvent extraction. Hydrometallurgy, 0304-386X, 2017.05, 171:149-156. 9，Liu Fupeng，Liu Zhihong, Li Yuhu,Liu Zhiyong; Li Qihou; Zeng Li. Extraction of gallium and

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Extraction of gallium and germanium from zinc refinery residues

2016.9.1  The EPMA results of the residue are shown in Fig. 2, Fig. 3 and Table 4.It can be inferred from Fig. 2 and Table 4 that the main phase in spot 1 is zinc sulfate, which contains small amounts of gallium and germanium; spots 6, 11 and 13, which have slightly higher gallium and germanium contents than the zinc sulfate, are primarily zinc ferrite;

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Germanium: Current and Novel Recovery Processes

2018.10.3  Germanium (Ge) is considered a critical element due to its many industrial applications; Ge is a metalloid used in solar cells, fiber optics, metallurgy, chemotherapy, and polymerization catalysis. The main sources of Ge are sulfides ores of Zn, Pb, and Cu, coal deposits, as well as by-products and residues from the processing of these ores and

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