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dc.contributor.authorLin, H.K.
dc.contributor.authorRao, P.D.
dc.date.accessioned2012-11-26T19:02:46Z
dc.date.available2012-11-26T19:02:46Z
dc.date.issued1988
dc.identifier.citationLin, H.K. and Rao, P.D., 1988, Ferric chloride leaching of the Delta sulfide ores and gold extraction from the leaching residue: University of Alaska Mineral Industry Research Laboratory Report No. 84, 18 p.en_US
dc.identifier.urihttp://hdl.handle.net/11122/1141
dc.description.abstractConventional differential and bulk flotation processes have difficulties in achieving high recoveries with acceptable grades far zinc, lead and copper from the complex sulfide ores found at Tok, Alaska. Furthermore, gold and silver, which account for a significant fraction of total value of the ores, are distributed evenly in the flotation tailings and concentrate. Therefore, processing both flotation tailings and concentrate would be necessary to obtain high recoveries of gold and silver. A mineralogical study revealed that the economic sulfide minerals are interstitially associated with a large preponderance of pyrite. The economic sulfide minerals are 10 to 40 microns in size. These mineralogical facts explain the difficulties encountered in the flotation process. A hydrometallurgical method involving ferric chloride leaching and subsequent steps to recover lead, zinc, silver and copper from the leach liquor has been studied at the Mineral Industry Research Laboratory, University of Alaska Fairbanks for the treatment of Delta ores. This alternative is attractive for processing complex sulfide ores which conventional flotation and smelting cannot handle. In addition, the liberation of sulfur in the environmentally acceptable elemental form, rather than as sulfur dioxide, may prove a major advantage of this hydrometallurgical method because of stringent environmental regulations.en_US
dc.publisherUniversity of Alaska Mineral Industry Research Laboratoryen_US
dc.relation.ispartofseriesMIRL Report;no.84
dc.subjectleachingen_US
dc.subjectTok, Alaskaen_US
dc.subjectsulfide mineralsen_US
dc.titleFerric chloride leaching of the Delta sulfide ores and gold extraction from the leaching residueen_US
dc.typeTechnical Reporten_US
refterms.dateFOA2020-01-24T14:59:51Z


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