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- Gold_extraction abstract "Gold extraction or recovery from its ores may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore.Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of small gold nuggets and flakes. Placer mining techniques since the mid to late 20th century have generally only been the practice of artisan miners. Hydraulic mining was used widely in the Californian gold rush, and involved breaking down alluvial deposits with high-pressure jets of water. Hard rock ores have formed the basis of the majority of commercial gold recovery operations since the middle of the 20th century where open pit and or sub-surface mining techniques are used.Once the ore is mined it can be treated as a whole ore using a dump leaching or heap leaching processes. This is typical of low-grade, oxide deposits. Normally, the ore is crushed and agglomerated prior to heap leaching. High grade ores and ores resistant to cyanide leaching at coarse particle sizes, require further processing in order to recover the gold values. The processing techniques can include grinding, concentration, roasting, and pressure oxidation prior to cyanidation.".
- Gold_extraction thumbnail X-60072.jpg?width=300.
- Gold_extraction wikiPageID "1686492".
- Gold_extraction wikiPageRevisionID "605468566".
- Gold_extraction hasPhotoCollection Gold_extraction.
- Gold_extraction subject Category:Gold.
- Gold_extraction subject Category:Metallurgical_processes.
- Gold_extraction type Abstraction100002137.
- Gold_extraction type Act100030358.
- Gold_extraction type Activity100407535.
- Gold_extraction type Event100029378.
- Gold_extraction type MetallurgicalProcesses.
- Gold_extraction type Procedure101023820.
- Gold_extraction type PsychologicalFeature100023100.
- Gold_extraction type YagoPermanentlyLocatedEntity.
- Gold_extraction comment "Gold extraction or recovery from its ores may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore.Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of small gold nuggets and flakes. Placer mining techniques since the mid to late 20th century have generally only been the practice of artisan miners.".
- Gold_extraction label "Gold extraction".
- Gold_extraction label "Аффинаж золота".
- Gold_extraction sameAs m.05ncj5.
- Gold_extraction sameAs Q1976854.
- Gold_extraction sameAs Q1976854.
- Gold_extraction sameAs Gold_extraction.
- Gold_extraction wasDerivedFrom Gold_extraction?oldid=605468566.
- Gold_extraction depiction X-60072.jpg.
- Gold_extraction isPrimaryTopicOf Gold_extraction.
