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Leaching coarse native copper ore with dilute ammonium carbonate solution.

Public Domain


Details

  • Personal Author:
  • Description:
    Experiments on ammonium carbonate leachng of native copper ores crushed to 1-inch size showed that in 30 days 55 percent of the copper was extracted from 0.7 percent copper conglomerate-type ore, and 85 percent was extracted from 2.1 percent copper amygdaloid-type ore. Cupric ions were not necessary to initiate leaching, and dilute solution containing only 2.2 Grams per liter nh3 and 1.9 Grams co3--was a suitable solvent. Copper was recovered from the leach liquor by solvent extraction and electrolysis of the strip solution. Cyclic testing of the leach-solvent extraction- electrolytic procedure is in progress on a 6-ton charge of minus 12- inch conglomerate-type ore assaying 2.2 percent copper. Oxygen is metered to the closed leach vessel as required by the leaching reaction. Initial copper dissolution was much slower than from minus 1-inch ore, but the leaching rate then markedly improved. [Description provided by NIOSH]
  • Subjects:
  • Series:
    Mining Publications
  • Document Type:
    Text
  • Genre:
    Journal Article
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    1-9
  • NIOSHTIC Number:
    nn:10010780
  • Citation:
    Solution Min Symp 103D AIME Ann Mtg 2/74 Am Inst Min Metal & Petrol Eng Pp381-89 :9 pages
  • Federal Fiscal Year:
    1974
  • Peer Reviewed:
    False
  • Source Full Name:
    Solution Min. Symp., 103D AIME Ann. Mtg., 2/74, Am. Inst. Min., Metal. & Petrol. Eng., Pp381-89
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
  • Download URL:
  • File Type:
    Filetype[PDF - 168.02 KB ]
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