processing zinc ore - germanium - BINQ Mining. Apr 16, 2013· Germanium Facts – Periodic Table of the Elements. Germanium is a gray-white element with a metallic luster. … flue dusts of smelters processing zinc ...
Phytomining: Harvesting Germanium May Provide a New Source of this Metal By Chris Calam 06.28.2016 ... Most germanium is recovered as a byproduct of zinc ore (sphalerite) processing, and occasionally from silver, lead, and copper ores. ... and the Advancing Mining blog offers many posts on various applications for these technologies.
Apr 16, 2013· Germanium Facts – Periodic Table of the Elements. Germanium is a gray-white element with a metallic luster.… flue dusts of smelters processing zinc ores or from the by-products of the combustion of certain coals. »More detailed
as a byproduct of processing zinc ores from its Gordonsville Mine. Pasminco has announced the planned closing of the Gordonsville Mine for June 2003 (Pasminco Limited, 2002b§1). Consequently, the 300,000 metric tons (t) of germanium ore reserves at the mine will …
an electrothermic process. This annual production level approximately equals production capacity, despite a mined zinc ore recovery level of 520 megagrams (573 tons), a domestic zinc demand of 1190 megagrams (1311 tons), and a secondary smelting production level of only 110 megagrams (121 tons).
Some zinc-copper-lead ore bodies contain enough germanium to justify extraction from the final ore concentrate. An unusual natural enrichment process causes a high content of germanium in some coal seams, discovered by Victor Moritz Goldschmidt during a broad survey for germanium deposits.
The element is commercially obtained from the dusts of smelters processing zinc ores, as well as recovered from combustion by-products of certain coals. A large reserve of the elements for future uses in insured in coal sources. Germanium can be separated from other metals by fractional distillation of its volatile tetrachloride.
Nov 01, 1984· A method for determining ~0.2 μg g or more of germanium in ores, concentrates, zinc-processing products and related materials is described. The sample is decomposed by fusion with sodium peroxide and the cooled melt is dissolved in dilute sulphuric acid.
Germanium minerals are also present in zinc ores, and commercial production of germanium is carried out by processing zinc smelter flue dust. It can also be recovered from the by-products of combustion of certain coals.
Zinc smelting is the process of converting zinc concentrates (ores that contain zinc) into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron, because in contrast, zinc has a low boiling point .
The Auby smelter is a mid-scale electrolytic zinc smelter. It produces cathodes as finished products, rather than casting into ingots. Feedstock of both zinc concentrates and zinc secondaries is consumed at the plant using the RLE process to produce zinc cathode.
Germanium is found in argyrodite (a sulfide of germanium and silver), in germanite (composed of about 8% of the element), in coal, in zinc ores, and other minerals. The element may be commercially prepared from the flue dusts of smelters processing zinc ores …
Zinc Co. in Clarksville, Tennessee produces germanium-rich residues by processing zinc ores from the nearby Elmwood- Gordonville mines. Most of these germanium-rich residues are shipped to Belgium for recovery and refining (U.S. Bu- reau of Mines, 1995). Germanium metal is presently valued at $482/pound(U.S. Bureau of Mines, 1995).
ciations with Germanium are Arsenic, Gallium, Silicon, Tin, Zinc, and other e- el ments . The industrial production of Germanium nowadays comes from two main sources: zinc ores processing and coal fly-ashes. While most of Germanium produced is a by-product of zinc processing, some Germanium is extracted from
Zinc processing, the extraction of zinc from its ores and the preparation of zinc metal or chemical compounds for use in various products. Zinc (Zn) is a metallic element of hexagonal close-packed (hcp) crystal structure and a density of 7.13 grams per cubic centimetre.
Cessation of processing primary ores at the French zinc smelter will annually result in a recovery loss of 7 tonnes of germanium and 50 tonnes of indium (Germanium, 2002). New applications for germanium and its compounds are continually under development.
It is essentially a byproduct of zinc ore processing. The development of germanium transistor has opened the door to countless applications of solid-state electronics, which has provided potential growth opportunities to the germanium market.
ciations with Germanium are Arsenic, Gallium, Silicon, Tin, Zinc, and other e- el ments . The industrial production of Germanium nowadays comes from two main sources: zinc ores processing and coal fly-ashes. While most of Germanium produced is a by-product of zinc processing, some Germanium …
This same behavior was observed in the leaching of germanium from zinc processing residues (Harbuck, 1989). Pugh (1929), in studying the GeO2-H2SO4 system at 25°C, Figure 2, found that as the sulfuric acid concentration increased, germanium concentration in solution decreased.
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.Germanium is stable in air and water, and is unaffected by alkalis and acids, except nitric acid.Germanium is an important semiconductor, mainly used in transistors and integrated circuits.
Processing Zinc Ore Germanium. Germanium - Chemistry Department . Germanium. Atomic Number: 32 Germanium is a gray-white metalloid, and an ... Commercially, germanium is a result of smelters processing zinc ores, ...
Germanium is produced almost exclusively from waste residue of hydrometallurgical zinc processing operations (Llewellyn, 1989). Currently, high-grade domestic zinc residues containing enough germanium to supply the annual needs of the U.S. are processed in foreign countries by proprietary techniques to recover the germanium (Plunkert, 1985).
Germanium is most commonly produced from sphalerite zinc ores but is also known to be extracted from fly ash coal (produced from coal power plants) and some copper ores. Regardless of the source of material, all germanium concentrates are first purified using a chlorination and distillation process that produces germanium tetrachloride (GeCl4).
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.