Synonymes & Informations sur | Mot Anglaise GANGUE

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Exemples d’utilisation de GANGUE dans une phrase

• Tailings dams can be toxic due to the presence of unextracted sulfide minerals, some forms of toxic minerals in the gangue, and often cyanide which is used to treat gold ore via the cyanide leach process.
• In mining, tailings or tails are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore.
• The geological processes that resulted in the deposition of the cassiterite in the stream beds often resulted in very pure tin gravel which was mixed with gravels of other, unwanted, minerals such as quartz, mica and feldspar, collectively known as gangue.
• Froth flotation is a process for separating minerals from gangue by exploiting differences in their hydrophobicity.
• Constituents' occupations include to a significant degree agriculture and the service sector, however the area was formerly heavily economically supported by the mining of coal, iron ore and businesses in the county still extract gangue minerals in present mining, such as fluorspar for the smelting of aluminium, to the south in the county is Darlington, which has particular strengths in international transport construction, including bridges.
• Magnetometric surveys can be useful in defining magnetic anomalies which represent ore (direct detection), or in some cases gangue minerals associated with ore deposits (indirect or inferential detection).
• Unlike blast furnace pig iron, which is almost pure metal, DRI contains some siliceous gangue (if made from scrap, not from new iron from direct reduced iron with natural gas), which needs to be removed in the steel-making process.
• Gangue, typically quartz, magnetite, garnet, chromite and kyanite, which usually account for the remaining bulk of the THM content.
• "In many places ore occurs in phonolite dikes, nearly always as calaverite in very narrow fissures associated with fluorite and quartz as gangue".
• Because metallic minerals have higher specific gravities than most gangue (waste) minerals, concentrating the milling ore was done in various gravity classifiers.
• Associated minerals include the lead minerals anglesite and galena, the zinc minerals sphalerite, hemimorphite, and smithsonite, and gangue minerals quartz, calcite, goethite, and dolomite.
• There is sometimes an association with quartz veining and colloform silica, however silicate gangue minerals are often rare.
• Gangue minerals in unoxidized deposits are pyrite, marcasite, and calcite; in oxidized deposits calcite and iron oxide.
• Early production was of the oxidized zone, where the galena was altered to cerussite and anglesite in a gangue of limonite, goethite, and calcite.
• Primary uranium minerals are uraninite and umohoite, with associated gangue minerals pyrite, fluorite, quartz, and adularia.
• In Europe in former times, before he could become a hewer, the miner had to learn to be a "sorter boy" (Scheidejunge), identifying ores and separating the ore from the gangue.
• In iron, manganese, and base metal treatment flowsheets, the jigs are operated to produce marketable grades of concentrate, or, as pre-concentration devices, to reject barren gangue prior to the ore entering the fine grinding section of the mill flowsheet.
• Many processes were available (magnetic separation, froth flotation, vanning, jigging), most using water and agitation after pulverizing, to separate the metal sulphide from the lighter weight gangue, but none gave perfect separation, and each had to be optimized for the particular ore body.
• Callahan, from 1896 to 1899, devoting much of his attention to the problem of "slimes", clayey ores that resisted the usual processes of jigging (agitation with water), vanning and froth flotation that concentrated the ore by removing much of the gangue, and resisting the percolation through the mixture of cyanide, as used to remove the gold content.

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