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germanium extraction increasing

How to Increase Germanium Extraction from Zinc ...

To increase germanium extraction, additional research identifying the mineralization of this “insoluble” germanium has been conducted. Previous data (Harbuck, 198889) indicated that the “insoluble” germanium was present in solid solution with silica. It was theorized that this solid solution formed in the roasting stage of zinc processing.

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Liquidliquid extraction of germanium by LIX 63 [PDF ...

with increase of the acidity of the raffinate during extraction. However, during the extraction of germanium from the acidic solutions no increase of the acidity of the raffinate was observed and extraction performance was better at higher acidities. This means that the mechanism indicated by equa tion (A) is not applicable.

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A ChlorineFree Protocol for Processing Silicon, Germanium ...

Germanium and tin are classified as “critical” elements based on growing demand for these elements in technological applications, lack of suitable substitutes, and, for germanium, high dispersion in the environment making extraction of the element processintensive.

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Extraction Processes for Gallium and Germanium

Extraction Processes for Gallium and Germanium ARPAD E. TORMA* and HEll JIANG New Mexico Institute ofMining and Technology, Socorro, NM 87801 ... increasing demand for gallium and germanium prompted a search for new sources and extraction processes for these metals. For example, gallium consumption in ...

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Germanium (Ge) Chemical properties, Health and ...

Germanium. Pure germanium is a hard, lustrous, graywhite, brittle metalloid. It has a diamondlike crystalline structure and it is similar in chemical and physical properties to is stable in air and water, and is unaffected by alkalis and acids, except nitric acid.

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copper extraction increased

How to Increase Germanium Extraction from Zinc ... Table 4 shows that as the amount of added Zn2SiO4 increased, the amount of soluble germanium in the “weak acid” leach residue decreased. When enough Zn2SiO4 was added to correspond to 10 wt % SiO2 in the calcine, germanium extraction from the “weak acid” leach solids decreased to below 38%.

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THE LIQUIDLIQUID EXTRACTION OF GERMANIUM WITH …

extraction period and occurs until the extraction of germanium attains the equilibrium value. In this work an extraction mechanism involving interfacial reaction of germanium and extractant is proposed to explain this kinetic behaviour. An increase in ionic strength is shown to reduce the rate of germanium extraction in the GeKELEX 100

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Germanium Gallium Ore Leaching with Sulfuric Acid

Increasing Germanium Extraction. The highest germanium extraction attained, even under optimum twostage leaching conditions, was 87% (see Table 2). A key to increasing germanium extraction is understanding the mineralogy of the ore. In this study, microprobe studies were performed on the ore before and after leaching.

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SUMMARY ••••• Acid Leaching Extraction of Ga and Ge

RESEARCH SUMMARY •••••_ Acid Leaching Extraction of Ga and Ge Megan P. Wardell and Charles F. Davidson INTRODUCTION ... there was a large increase in gallium extraction. There was, however, ... germanium extraction increased from to %. Zinc and cadmium extrac­

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Extraction of germanium(IV) from acid leaching solution ...

Extraction of germanium(IV) from acid leaching solution with mixtures of P204 and TBP MA Xihong(), QIN Wenqing(), WU Xuelan( ) ... Since the use of this metal is likely to increase in the near future and also the recovery technology of germanium

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Minerals 2015 OPEN ACCESS minerals MDPI

elements (such as Zn and its minerals) and as germanium oxide. By far, the most important application ... a small increase of germanium extraction was observed with increasing L/S ratio. But taking into account other aspects such as the fluency of the fly ashwater mixture, worse for L/S = 3, or the quantity of liquid residues, higher in the ...

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Method of extracting germanium from germanium deposit ...

Increase of the germanium volatilization rate means increase of the grade of germanium in the collected smog. This reduces industrial production inputs for germanium extraction using a hydrometallurgical process afterwards, reduces the dosage of hydrochloric acid and other auxiliary materials, reduces treatment to waste water and waste slag.

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US20170121790A1 Method of extracting germanium from ...

Increase of the germanium volatilization rate means increase of the grade of germanium in the collected smog. This reduces industrial production inputs for germanium extraction using a hydrometallurgical process afterwards, reduces the dosage of hydrochloric acid and other auxiliary materials, reduces treatment to waste water and waste slag.

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Germanium Wikipedia

Germanium cluster anions (Zintl ions) such as Ge 4 2−, Ge 9 4−, Ge 9 2−, [(Ge 9) 2] 6− have been prepared by the extraction from alloys containing alkali metals and germanium in liquid ammonia in the presence of ethylenediamine or a cryptand.

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processing zinc ore germanium

the extraction of gallium and germanium from zinc oxide. When zinc ores containing germanium and gallium in minute amounts are smelted The above mentioned elements were extracted in the following manner : One kg. of The foregoing processes were repeated until about 100 pounds of the. ... How to Increase Germanium Extraction from Zinc ...

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rod mills germanium

Jun 18, 2018· Germanium nanocrystals (Ge NCs) have attracted increasing attention as a nanoZnO products were determined as sheet, block, sieve, column, and rod, a highenergy ball mill for 30 h under three different atmospheres of air, argon, .

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CADMIUM, GALLIUM, GERMANIUM RESOURCES IA

CADMIUM, GALLIUM, AND GERMANIUM RESOURCES IN IA Palmer C. Sweet and William F. Giannini INTRODUCTION Cadmium, gallium, and germanium are metallic elements ... increase with the use of electric vehicles. ... extraction of gallium increased to over 95 percent while ger

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Germanium and Gallium Extraction from Gasification Fly Ash ...

Gasification Fly Ash: Optimisation for Up scaling a Recovery Process Fátima Arroyo 2; ... but increasing differences up to 94 and 72 mg/kg for Ge and Ga, respectively, are observed in the case of longer sampling periods (2 3 months) (FA18). ... Germanium and gallium extraction tests To achieve a high and regular Ge and/or Ga extractable ...

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Extracting and Refining Germanium Home Springer

Extracting and Refining Germanium ... manium extraction and refining tech­ ... Germanium tetrachloride vapor condensing from the last purification stage does so in an atmosphere of chlorine gas and is substantially saturated with it. Germanium tetrachloride, when saturated with chlorine, is a …

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Extraction of Germanium by the AOT Microemulsion with N235 ...

Extraction of Germanium by the AOT Microemulsion with N235 System Article in Industrial Engineering Chemistry Research 49(20) · September 2010 with 14 Reads DOI: /ie100963t

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(PDF) Study on Extracting of Germanium with Trioctylamine

Study on Extracting of Germanium with Trioctylamine * Jie Liang 1, Lijun Fan 2, Kai Xu 2 and Yan Huang 2. 1 Chemistry Department, Bijie University, ... To increase germanium extraction, the USBM ...

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Recovery Methods of Germanium

Abstract: There is an introduction of the synthesis principles and extraction performance of several kinds of germanium extraction agents including Lix63, Kelex100, and 7815. In addition, the general procedures and technical advantages of the extraction agents for germanium …

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Study on Extracting of Germanium with Trioctylamine

Fig 1 relationship of germanium extraction rate It can be seen from that a single extractive rate of germanium reached % under pH= the acidity was increasing,the extraction of germanium was reducing main reason was

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Recovery of germanium from aqueous solutions by solvent ...

Recovery of germanium from aqueous solutions by solvent extraction US4915919 An improved method for selectively rcovering Ge from acidic solution containing Ge and typically Zn, As, Cd, Sb, In, Cu and Fe (II) by multistage, countercurrent liquidliquid extraction is described.

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PhytoGerm: Extraction of germanium from biomass An ...

Germanium extraction process developed by PhytoGerm Within the PhytoGerm project, a germanium extraction process based on the combination of leaching and distilling germanium with hydrochloric acid was developed. ... the accumulation rates of germanium within the ribbon grass need to be intensified by methods increasing the germanium ...

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Extraction of germanium(IV) from acid leaching solution ...

Abstract. Solvent extraction experiments were conducted from acidic solutions containing germanium(IV) and other metal ions, such as Ga 3+, Fe 3+, Zn 2+ and Fe 2+ in hydrometallurgical process of zinc. The purpose of this work was to enhance the efficiency of the extraction and stripping processes and the selectivity of germanium and other metals, while making the method as simple as …

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Selective extraction of zinc, gallium, and germanium from ...

Selective extraction of zinc, gallium, and germanium from zinc refinery residue using two stage acid and alkaline leaching. ... The leaching efficiencies of Zn and Fe increase …

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Hydrometallurgical recovery of germanium from coal ...

In this article, a hydrometallurgical method for the selective recovery of germanium from fly ash (FA) has been tested at pilot plant scale. The pilot plant flowsheet comprised a first stage of water leaching of FA, and a subsequent selective recovery of the germanium from the leachate by solvent extraction method.

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US4915919A Recovery of germanium from aqueous solutions ...

When LIX 63 alone is used for germanium extraction, a significant amount of acid is coextracted along with the germanium, and the acid coextraction increases with increasing acid concentration in the aqueous feed solution.

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New Germanium Extraction Method Could be a Boon for …

China isn’t the only place with germanium though, and with a new extraction process, it might be possible to increase germanium yields across the world, with some other added benefits.

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Spectrophotometric quantification of germanium (IV) in ...

Germanium is present in nature dispersed in ore deposits, ... extraction [11–15], coprecipitation [16,17], and cloud point ... of the procedure was increased by increasing the ATAP concentration up to × 10−4 M and remained constant at higher concentrations.

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Global Substance Flow Analysis of Gallium, Germanium, and ...

* Address correspondence to: Gara Villalba, Universitat Autònoma de Barcelona, Department of Chemical Engineering, Building Q, 08193 Bellaterra, Barcelona, Spain. Email: This study provides a global substance flow analysis for gallium (Ga), germanium (Ge), and indium (In) for ...

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RI 94·19 REPORT OF INVESTIGATIONS/1992 r …

vent extraction, (5) germanium solvent extraction, and (6) germanium and gallium coextraction. IDENTIFYING DOMESTIC SOURCES To decrease the dependence on foreign sources, more than 50 potential gallium and germanium ores and . several residue byproducts were …

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