Germanium - minerals.usgs.gov
A germanium refinery in Utica, NY, produced germanium tetrachloride for optical fiber production. Another refinery in Quapaw, OK, produced refined germanium compounds for the production of fiber optics, infrared devices, and substrates for electronic devices. The major end uses for germanium, worldwide, were estimated to be fiber-optic
Zone melting - Wikipedia
Its early use was on germanium for this purpose, but it can be extended to virtually any solute-solvent system having an appreciable concentration difference between solid and liquid phases at equilibrium. This process is also known as the float zone process, particularly in …
Germanium and Applications - Portfolio company - RUSNANO
Germanium and Applications is the only vertically integrated producer of germanium in Russia. When plant expansion is completed in 2013, the company will be set to pursue world-leading production of this strategic element.
The Chemistry of Germanium | ScienceDirect
The most important ore of lead is galena or lead glance PbS, which is widely distributed throughout the world. Other ore minerals of lead are anglesite, cerussite, pyromorphite, and mimetesite. Other lesser minerals are crocoite (or kallochrome, or red-lead ore), wulfenite (or molybdenum lead spar, or yellow lead ore) and stolzite.
tin ore and concentrate 40 up - Mineral Processing EPC
Dec 09, 2017· Holman Tin Ore Concentrating Wet Mineral Processing . Holman Tin Ore Concentrating Wet Mineral Processing Shaking Table . 20GP or 40GP,40HQ,FR container,In bulk,the spare parts in wooden case. . to Gan zhou airport, then we will send the car to pick up you from Ganzhou airport.
Enrichment of Zinc Concentration of Ishagu Lead-Zinc Ore ...
concentration techniques, however, may still be used for pre-concentrating before fine grinding and flotation [6, 7]. Flotation is a technique by which particles of one mineral or group of minerals are made to adhere preferentially to air bubbles in the presence of a chemical reagent . This is
Copper Smelting Flue Dust: A Potential Source Of Germanium
quantities of germanium, so nowadays zinc ore processing is the main germanium source. Previous studies (Font et al., 2005) revealed coal gasification fly ahs as an attractive source of Ge and other valuable elements (Ga, V, Ni). The occurrence of Ge as water soluble species (GeS2, GeS and hexagonal-GeO2) in the gasification
On the geological availability of germanium | SpringerLink
Abstract. Based on a detailed statistical analysis of chemical data published in the scientific literature, estimates were made of the minimum amounts of recoverable Ge contained within sulphidic zinc ores and coals, given current processing technologies.
mineral processing ore medicine cabinets manufacturers
Feb 21, 2016· Factory Directly Supply High Efficiency Smelting Plant Use Metal Powder Belt Sintering Machine .. 2016 new iron ore concentrate sintering machine. Gold Lab Equipment, Gold Lab Equipment Suppliers and . mineral processing ore medicine cabinets …
Is germanium a metal? - Quora
Germanium is a chemical element with symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Purified germanium is a semiconductor, with an appearance most similar to elemental silicon.
Germanium | Ge - PubChem
The accumulation of germanium by barley (Hordeum vulgare cv. Arlvat) grown at various germanium and pH levels was investigated because germanium is an industrially important metal and bioaccumulation of germanium is a potentially useful means of concentrating this trace metal.
How is pure germanium found? - Quora
FROM WIKIPEDIA: "Germanium's abundance in the Earth's crust is approximately 1.6 ppm. Only a few minerals like argyrodite, briartite, germanite, and renierite contain appreciable amounts of germanium, and none in mineable deposits. Some zinc-coppe...
Germanium | Article about germanium by The Free Dictionary
The chief ore of germanium is germanite, which contains copper, sulfur, about 7% germanium, and 20 other elements. Germanium is produced as a byproduct of the refining of other metals; there is considerable recovery from flue dusts and from ashes of certain coals with high germanium content.
USGS Minerals Information: Germanium
Germanium is mainly a byproduct of zinc ore processing. It is a hard, grayish-white element; it has a metallic luster and the same crystal structure as diamond; and it is brittle, like glass. In addition, it is important to note that germanium is a semiconductor, with electrical properties between those of a metal and an insulator. ...
zinc extraction from ore - perkinspreschool.com
Sep 16, 2018· the extraction of gallium and germanium from zinc oxide. ... ore concentrate containing lead, zinc, or both is fed, in some cases after for most extraction methods they have to be separated. Contact Us. Extraction Of Zinc - Process Of Concentration, Roasting, And Smelting.
High Purity Germanium, a Review on Principle Theories and ...
production steps of Germanium from mineral concentrate to crystal growth has been shown. Germanium end concentrate, obtained from either zinc ore or coal fly-ashes and consisting between 0.5% 6% Ge - , can follow either a hydro- or a pyro- metallurgical route. The hydrometallurgical route includes leaching using sulfuric Figure 4.
NIOSHTIC-2 Publications Search - 10011084 - Sulfuric acid ...
While previous researchers concluded that a reducing agent, such as so2, is needed to extract germanium and gallium from such ore, this research showed that high extractions (87 pct ge, 97 pct ga) were possible using sulfuric acid alone, if the acid concentration were properly controlled.
Germanium ore concentrating - primaryteachers.in
smart-elements® - Buy Germanium online. Germanium is a silvery white brittle metalloid ... Impurities are more soluble in the molten metal than in the solid and thus concentrate in the liquid zone as it ...
Germanium - Wikipedia
Germanium is a chemical element with symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon.Pure germanium is a semiconductor with an appearance similar to elemental silicon. Like silicon, germanium naturally reacts and forms complexes with oxygen in nature.
Germanium geochemistry and mineralogy - USGS
Germanium bonds to lignin-derivative organic compounds that are found in peat and lignite, accounting for its common concentration in coals and related organic material. Germanium is precipitated from water together with iron hydroxide, accounting for its concentration in some sedimentary and supergene iron oxide deposits.
Germanium Uses - 911metallurgist.com
Germanium in Fiber Optics: The benefits of fiber optical communication systems are many and as the costs have been sharply reduced, there has been a stampede by the world's communication industry to take advantage of this new technology. The main advantage offered is extremely high density signal capacity. Light signals can be pulsed extremely fast, on- and of hundreds of million times per ...
smart-elements® - Buy Germanium online
Germanium is stable in air and water and is unaffected by alkalis and acids, with the exception of nitric acid. It is a poor conductor of electricity but has exceptional properties as a semiconductor material and it is in this area where germanium is primarily used.
Germanium (Ge) - Chemical properties, Health and ...
Germanium. Pure germanium is a hard, lustrous, gray-white, brittle metalloid. It has a diamondlike crystalline structure and it is similar in chemical and physical properties to silicon.Germanium is stable in air and water, and is unaffected by alkalis and acids, except nitric acid.
Palladium Concentrate & Ore - Metal World
Palladium Concentrate & Ore Palladium Ore & Concentrates includes all ores or concentrates with Palladium content. When listing Palladium Ore & Concentrates please state clearly the percentage of Palladium content, other details as to the quality of the Ore or Concentrates.
What does germanium mean? - Definitions.net
Germanium. Germanium is a chemical element with symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Purified germanium is a semiconductor, with an …
Mineralogical Distribution of Germanium, Gallium and ...
Abstract: Germanium, gallium and indium are in high demand due to their growing usage in high-tech and green-tech applications. However, the mineralogy and the mechanisms of concentration of these critical elements in different types of hydrothermal ore deposits remain poorly constrained.
ANALYST, AUGUST 1985, Determination of Germanium in ...
with the germanium. l4 The concentration of hydrochloric acid has a marked effect on the transfer of germanium to the organic phase and the re-extraction of germanium to the aqueous phase.15 ...
Germanium - Element information, properties and uses ...
As a semiconductor, germanium allowed the production of a solid state equivalent to the diode. Like most semiconductors, germanium can have impurities added to make it an electron donor - a so-called n-type material - or an electron acceptor, called p-type. By marrying p and n type strips of germanium, the element provided the same diode effect.
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