Effects of Temperature on Simulated In Situ Leaching of a Chalcopyrite Ore

Details

• Personal Author:
  Carnahan, Thomas G.
• Description:
  The Bureau of Mines conducted research to simulate in situ leaching of a chalcopyrite ore. The purpose was to obtain a direct comparison between moderate-temperature and elevated-temperature in situ leaching of copper from minus 10-inch ore and to analyze the sulfuric acid and oxygen requirements of the leaching system. Experiments employing oxygen were conducted at 35 deg and 90 deg c on 362- and 367-lb ore charges, respectively, under flooded conditions and at 400 psig. At 90 deg c, 47 pct of the copper was extracted in 913 days of leaching; at 35 deg c, 27 pct of the copper was extracted in 915 days. Diffusion into and out of the ore fragments controlled the rate of leaching. Oxygen consumption was 1.46 Lb/lb of copper extracted at 35 deg c and 3.15 Lb/lb of copper extracted at 90 deg c. Sulfuric acid requirements of the ore were 5.49 and 7.48 Lb/lb of copper extracted at 35 deg and 90 deg c, respectively. [Description provided by NIOSH]
• Content Notes:
  in NTRL, no pdf
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Conference Publications ; Case Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  RERC - Reno Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-16
• NIOSHTIC Number:
  nn:10006352
• Federal Fiscal Year:
  1982
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/236677/cdc_236677_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]