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Yunnan Chihong Zinc & Germanium Co Ltd
Get the latest Yunnan Chihong Zinc & Germanium Co Ltd (600497) real-time quote, historical performance, charts, and other financial information to help you make more informed trading and ...
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Analysis of Blood Concentrations of Zinc, Germanium, and Lead …
Trace elements, including zinc (Zn) and germanium (Ge), are essential for health; deficiency or excess levels of trace elements results is harmful. As a result of industrial and agricultural production, Pb widely exists in people's living environment. It is absorbed mainly through the respiratory and digestive tracts, producing systemic harm.
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Mineral Commodity Summaries 2022
Tennessee, and Washington. Based on an analysis of zinc concentrates, U.S. reserves of zinc may contain as much as 2,500 tons of germanium. Because zinc concentrates are shipped globally and blended at smelters, however, the recoverable germanium in zinc reserves cannot be determined. On a global scale, as little as 3% of the germanium
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Review on resources and recycling of germanium, with special …
Germanium is distributed dispersedly in the earth's crust, where only a few independent deposits of the element exist; the average abundance of germanium is 1.5 × 10 −4 % (Arroyo and Fernandez-Pereira, 2008).Natural germanium resources include germanium-bearing zinc ores, coal (e.g., lignite), and other germanium-containing …
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Germanium | Memorial Sloan Kettering Cancer Center
For Patients & Caregivers. Tell your healthcare providers about any dietary supplements you're taking, such as herbs, vitamins, minerals, and natural or home remedies. This will help them manage your care and keep you safe.
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Green and efficient recovery of valuable metals from by-products …
Search ScienceDirect. Journal of Cleaner Production. Volume 380, Part 1, 20 December 2022, 134993. ... results show that the ultrasonic-enhanced ammonium persulfate process has a significant effect on the recovery of zinc and germanium from germanium-containing dust. During the reaction, the soluble matter is almost completely …
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Germanium or ZnSe lens for DIY hobbiyist projects...
The lens will be made with Germanium elements (more expensive), Chalcogenide IR transmissible glass (less expensive but still not 'cheap') or a hybrid that also uses ZnSe in the lens design. Chalcogenide IR transmissible glass has revolutionised the production of lower cost lens blocks for thermal imaging systems.
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Review of germanium processing worldwide
A principal zinc ore is sphalerite and germanium occurs within the lattice of this zinc sulphide. China is the world's second-largest exporter of zinc after Canada on the basis of exports. Albeit that consumption of zinc within China increased at the rate of 11% during the period 1990–2001 its production output increased by 13%.
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Zinc and germanium in the sedimentary rocks of Gale …
Zinc and germanium enrichments have been discovered in sedimentary rocks in Gale Crater, Mars, by the Alpha Particle X-ray Spectrometer on the rover …
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Zinc germanium nitrides and oxide nitrides: the influence of …
Zinc germanium nitrides and oxide nitrides: the influence of oxygen on electronic and structural properties J. Breternitz and S. Schorr, Faraday Discuss., 2022, 239, 219 DOI: 10.1039/D2FD00041E This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without …
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Non-linear optical crystal
Zinc germanium phosphide Zinc Germanium Phosphide (ZnGeP 2) is the nonlinear optical crystal of choice in the 2–8 μm spectral range due to its high thermal conductivity. Material improvements were made possible by advances in processing at BAE Systems. These advances have greatly reduced the defect-related absorption losses near the bandedge.
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Analysis of Blood Concentrations of Zinc, Germanium, …
Trace elements, including zinc (Zn) and germanium (Ge), are essential for health; deficiency or excess levels of trace elements results is harmful. As a result of …
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Germanium | Properties, Uses, & Facts | Britannica
Germanium is widely distributed in nature but is too reactive to occur free. Primary minerals include argyrodite (from which it was first isolated), germanite, renierite, and canfieldite, all of them rare; only germanite and renierite have been used as commercial sources for the element. Trace quantities of germanium are found in certain zinc …
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Nyrstar plans expansion of Clarksville plant with $90 million germanium
It's estimated that the Nyrstar could produce an estimated 30 tons of germanium and 40 tons of gallium in Tennessee, and the new Clarksville facility could provide for 80 percent of the U.S.'s ...
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Optimization of Zinc and Germanium Recovery Process from Zinc …
Based on the problems existing in the existing process, the ultrasonic field enhanced potassium dichromate atmospheric leaching of zinc and germanium in zinc oxide dust was studied, and three main factors (liquid-solid ratio, leaching temperature and potassium dichromate concentration) were optimized by the Box-Behnken design (BBD) …
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Recent advances in the recovery of germanium during the zinc …
This review provides a detailed discussion of recent advances in the comprehensive recovery of germanium in zinc refining processes. In zinc refining processes, many phases (e.g., GeS x, and germanium-containing silicates) are not dissolved in the leaching system, which is the main reason for the low leaching rate of …
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Recent advances in the recovery of germanium during …
Under the background of the increasing demand for germanium in high-tech, this paper finds out the mechanism of silicon germanium polymerization precipitation by …
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Extraction behavior of germanium from synthetic leaching solution …
Such obtained secondary zinc oxide usually contains germanium at 500–1000 g/t, and is the main resource for germanium production in China (Zhang et al., 2019). After removing most of the fluoride and chloride from it through a roasting or caustic soda washing process, the secondary zinc oxide is leached in a two-stage …
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Recovery of a critical metal from electronic wastes: …
Germanium is recognized as a critical and rare element, since it lacks primary resources and is extracted as by-product of zinc and copper refining. This …
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Numerical simulation for growing Large-scale and High-quality Zinc
1. Introduction. Zinc-germanium diphosphide crystal (ZnGeP 2) is a semiconductor with tetragonal structure (chalcopyrite). [1], [2] ZnGeP 2 shows high second-order dielectric susceptibility (d 36 = 75 pm V −1), wide transparency range (0.65–13 μm), high specific thermal conductivity and sufficient phase-matching birefringence. [3], [4] …
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Roadmap for recycling of germanium from various resources
Germanium as a strategic metalloid is widely used in high-tech devices. The most crucial germanium resources are rare and limited to zinc minerals, i.e., especially zinc sulfides and coal-related products. Other than coals and zinc minerals, materials such as WEEEs (wastes from electrical and electronic equipment) and catalysts are …
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A new single step process for synthesis and growth of ZnGeP2
Introduction. Zinc–germanium–phosphide, ZnGeP 2 (ZGP), is a semiconducting material of II–IV–V 2 group with band gap of about 2.1 eV. It has a cubic zinc blende type structure with slightly shifted atomic positions with respect to those of the zinc blende structure of space group F 4 ¯ 3 m, leading to a tetragonal structure of space …
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Mechanism and kinetics study on ultrasonic combined
The content of zinc and germanium in the CL residue dropped to 10.47% and 278.2 g/t, while the content of zinc and germanium in the UOL residue dropped to 4.63% and 123.19 g/t, respectively. Combined with the leaching experiments, it was proved that the UOL can effectively leach zinc and germanium from GCSD.
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Recent advances in the recovery of germanium during …
The extraction efficiency of germanium from zinc concentrate treated by hydrometallurgy is about 68%. There is therefore a large amount of potentially …
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600497.CN | Yunnan Chihong Zinc & Germanium Co. Ltd. A …
Yunnan Chihong Zinc & Germanium Co. Ltd. A balance sheet, income statement, cash flow, earnings & estimates, ratio and margins. View 600497.CN financial statements in full. ... search. View All ...
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Germanium: A review of its US demand, uses, resources
The main sources of germanium are zinc refinery residues and fly ash, and thus its production increase depends on the motivation of zinc refineries and coal power plants to engage in the germanium market [8]. As such, worldwide, only 3–5% of germanium from these sources is recovered [9]. Thus, the criticality of the germanium …
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Germanium
sulfide ores. Substantial U.S. reserves of recoverable germanium are contained in zinc deposits in Alaska, Tennessee, and Washington. Based on an analysis of zinc …
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What are Gallium and Germanium and which countries are …
Germanium ores are rare and most germanium is a by-product of zinc production and from coal fly ash. China produces around 60% of the world's germanium, according to European industry association ...
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Refractive Index Measurements and New Sellmeir Coefficients of Zinc
Erroneous predictions in phase matching angles based on older refractive index data have resulted in compromised device performance. We have conducted a complete study of the refractive indices of zinc germanium phosphide from 2 to 9 microns and calculated new Sellmeir coefficients.
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Nonlinear crystal technologies | BAE Systems
Zinc Germanium Phosphide (ZGP, ZnGeP 2) The nonlinear optical crystal of choice for high-energy and high-power laser frequency conversion in the 2- to 8-μm spectral range. This is the most mature crystal technology in production at BAE Systems (>25 years). Our proprietary processing offers the lowest losses, largest bulk sizes, and highest ...
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