gallium germanium recovering

The development and implementation of T industrial ...

recover gallium along with solvent extraction. Acid leaching The review of the literature identified two gallium recovery processes that had been developed based on Clarksville gallium/germanium residue1,2. The gallium recovery processes used the following methods: An acid leach circuit to dissolve the gallium and germanium

US4678647A - Process for the recovery of gallium and ...

A method is disclosed for recovering gallium and/or germanium from fly ash which comprises pelletizing the fly ash, treating the pellets in the presence of an oxidizing gas at a temperature of from about 900° C. to just below the fusion temperature of the pellets, treating the pellets in the presence of a reducing gas at the same temperature range, and recovering gallium and/or germanium ...

THE DEVELOPMENT AND IMPLEMENTATION OF INDUSTRIAL ...

The review of the literature identified two gallium recovery processes that had been developed based on Clarksville gallium/germanium residue(1,2). The gallium recovery processes used the following methods: • An acid leach circuit to dissolve the gallium and germanium, • Conversion the leached iron from ferric to ferrous,

Germanium and Gallium Extraction from Gasification Fly Ash ...

Germanium and gallium occur as water soluble Ge (hexagonal -GeO 2 and GeS 2) and Ga ... industrial recovery processes for these elements 9 -10. T he total Ge recovery from IGCC fly ... Germanium and Gallium Extraction from Gasification Fly Ash: Optimisation for the Up-Scaling of a Recovery …

Gallium and germanium recovery from domestic sources ...

Gallium and germanium recovery from domestic sources. [D D Harbuck] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for Contacts Search for a Library. Create lists, bibliographies and reviews: or Search WorldCat. Find items in libraries near you ...

Umicore - Germanium

Applications in the field of infrared optics account for another sizeable part of germanium consumption. Here it is used in lenses or windows, given its high transparency to infrared radiation. Because germanium and gallium arsenide have very similar lattice constants, germanium substrates can be used to make gallium arsenide solar cells.

Fast coadsorption and selective separation of gallium (III ...

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 b-FeOOH were also prepared for systematically clarifying the excellent adsorption ability of 3D-α-FeOOH. The adsorption experiments indicated that the 3D-α …

Gallium, Germanium, Indium, Vanadium, Or Molybdenum ...

Nov 30, 2016· Gallium, Germanium, Indium, Vanadium, Or Molybdenum Produced Patents (Class 205/564) ... Abstract: It is possible to recover gallium and indium efficiently and at a low cost from solutions containing traces of gallium and indium. In particular, jarosite is produced by performing a specific treatment on a solution obtained by a two-stage ...

Recovery of gallium from Bayer liquor: A review ...

Ion exchange has now been generally acknowledged as the best method for recovery of gallium from Bayer liquor because of its advantages such as the compact process, high recovery rate, easy operation, and non-effect on alumina process. It is employed by almost all the new gallium production lines for recovering gallium from Bayer liquor.

RECOVERY OF GALLIUM, GERMANIUM AND SILVER …

Feb 11, 2016· RECOVERY OF GALLIUM, GERMANIUM AND SILVER – KIHABE/NXUU ZINC, LEAD AND SILVER PROJECT, BOTSWANA Independent Laboratory Assaying for Gallium (Ga) and Germanium (Ge) A previously advised in its March 2011 Quarterly Report, released to the market on 28 April 2011, the Company submitted diamond drill core samples to be assayed for Ga

Strategic Metal Report: Germanium

The limited number of postings made on SM Report so far this year is fairly reflective of the lack of newsworthy events impacting the minor and electronic metal markets.. With readily available material and limited spot deals, gallium and germanium prices have effectively been pegged for months. Indium, meanwhile, which soared in 2013 on the back of the Fanya Metal Exchange's enormous purchase ...

RI 94·19 REPORT OF INVESTIGATIONS/1992 r-------- …

To recover gallium and germanium from the leach solutions, the solvent extractants octylphenyl acid phosphate (OPAP) (for gallium) and LIX 63-0PAP (for g~rmanium) were identified. These extractal1ts were tested in separate, continuous, solvent-extraction circuits yielding a gallium recovery of 94 pct and a

Gallium and germanium recovery from ... - worldcat.org

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Process for the recovery of gallium and germanium from ...

A method is disclosed for recovering gallium and/or germanium from fly ash which comprises pelletizing the fly ash, treating the pellets in the presence of an oxidizing gas at a temperature of from about 900.degree. C. to just below the fusion temperature of the pellets, treating the pellets in the presence of a reducing gas at the same temperature range, and recovering gallium and/or ...

(PDF) The Development and Implementation of Industrial ...

The Development and Implementation of Industrial Hydrometallurgical Gallium and Germanium Recovery Article (PDF Available) in Journal of the Southern African …

2018 CHINESE MINOR METALS FORUM: Chinese indium, bismuth ...

The domestic markets for indium, bismuth and germanium in China have been staging a recovery this year, delegates to this week's 2018 Chinese Minor Metals Forum in Kunming were told.

Extraction Processes for Gallium and Germanium: Mineral ...

Feb 15, 2007· Gallium is conventionally obtained as a byproduct of aluminum, and germanium as byproduct of zinc processing. An exception to this rule is the Apex Mine ore which has served as the only primary source in the world for direct production of gallium and germanium.

CADMIUM, GALLIUM, GERMANIUM RESOURCES IA

note that some of the germanium is associated with quartz and is difficult to recover. In 1986, St. George Mining Corp. estimated the proven reserves to be 180,000 tons of ore con- taining 0.042 percent gallium and 0.115 percent germanium. During 1986, 1650 pounds of gallium and 5621 pounds of

Recovery and separation of gallium(III) and germanium(IV ...

In this research, gallium and germanium were separated and recovered from zinc refinery residues by a two-stage leaching. In the first leaching stage with sulfuric acid media, 92% of zinc and 94% of copper were leached resulting in significant gallium and germanium enrichment up to ca. 300%.

Processing to obtain high-purity gallium | SpringerLink

Abstract. Gallium has become increasingly popular as a substrate material for electronic devices. Aside from ore, gallium can be obtained from such industrial sources as the Bayer process caustic liquor that is a byproduct of bauxite processing, flue dust removed from the fume-collection system in plants that produce aluminum by the electrolytic process, zinc refinery residues, gallium scrap ...

Germanium Gallium Ore Leaching with Sulfuric Acid

Table of ContentsMaterial and EquipmentGermanium ExtractionAvoiding Germanium PrecipitationTwo-Stage Counter-Current LeachingIncreasing Germanium Extraction A sulfuric acid leach technique for extracting gallium and germanium from Apex ore without the use of a reducing agent, such as SO2, was investigated. Leaching studies showed that with increasing sulfuric acid concentrations, gallium ...

THE extraction and refining of germanium and gallium

Sources of germanium and gallium are discussed and descriptions are given of processes for the recovery of these elements from flue dusts and from germanite.

CN103695657A - Method for enriching and recovering gallium ...

The invention discloses a method for enriching and recovering gallium and germanium from zinc hydrometallurgy waste residues, and relates to a method for extracting metals-gallium and germanium from the zinc hydrometallurgy waste residues by adopting a wet process. The method is characterized by adopting the following steps: the sulfuric acid leaching is adopted in the extraction …

THE DEVELOPMENT AND IMPLEMENTATION OF INDUSTRIAL ...

The goals of the gallium recovery project were to: Review the feasibility of gallium removal from the refinery residue prior to sale of the residue for the germanium values, Identify and lab test a commercial process for the recovery of gallium, Pilot test the commercial process, and

Germanium dioxide compounds for optical lens manufacture ...

Pure germanium is used for lenses and windows in IR systems that operate at even higher wavelengths (from 2 to 12 microns). Gallium and gallium oxide can be used to increase the refractive index of glass and are used in the manufacture of lenses and optical mirrors.

Gallium: The Slippery Metal | Seeking Alpha

Feb 02, 2009· Nestled, as it is, in between zinc on its left, germanium on its right and below aluminum, it took the French chemist Paul Emile Lecoq de Boisbaudran until 1875 (some six or so years after the ...

Recovering In, Ge and Ga from zinc residues (Journal ...

A novel solvent extraction process has been developed to selectively recover indium, germanium and gallium from the cement residue sulfuric acid leach solutions in a hydrometallurgical zinc plant. The key work was to determine a special organic molecule for gallium and germanium extraction ...

Recovering in, Ge and Ga from zinc residues | SpringerLink

A novel solvent extraction process has been developed to selectively recover indium, germanium and gallium from the cement residue sulfuric acid leach solutions in a hydrometallurgical zinc plant. The key work was to determine a special organic molecule for gallium and germanium extraction.

Recovery and separation of gallium(III) and germanium(IV ...

Gallium and germanium are critical metals that do not occur as separate ores in the nature. Currently, the most significant sources of gallium and germanium are the refining by-products of zinc, copper and aluminum (Harbuck, 1992, Lee et al., 1994, Kul and Topkaya, 2008).

Gallium Solvent Extraction - 911metallurgist.com

Recently, details of a study optimizing gallium and germanium extraction from zinc residues using H2SO4 leaches was published. In the process, filtrates containing gallium and germanium along with other impurities such as iron, copper, zinc, and cadmium are produced. The focus of this paper is the recovery of gallium from these solutions. It has been reported that in an H2SO4 system, di(2 ...

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