Report of Investigations 8646: Separation of Copper-Nickel Mattes from Duluth Gabbro Concentrates by Flotation and Magnetic Methods

Details

• Personal Author:
  Schluter, Robert B.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  The Bureau of Mines investigated separating copper-nickel mattes to recover a copper-rich fraction suitable for processing by conventional copper metallurgical processes and a nickel-rich fraction suitable for processing in a hydrometallurgical nickel circuit. Distribution of cobalt and precious metals between the copper and nickel fractions was also determined. A matte containing 65 pct Cu, 9 pct Ni, 4 pct Fe, and 20 pct S was separated into a copper fraction that comprised 80 pct of the matte weight and contained 70 pct Cu and < 1.5 pct Ni, plus a nickel fraction that contained 40 pct Ni and 30 pct Cu. Recoveries of copper and nickel into their respective fractions were 90 pct and 87 pct. These results were obtained in a laboratory flotation cell at a matte grind of 90 pct minus 500 mesh and a ph of 12.4, Using 1.7 pounds DPG (diphenyl-guanidine) per ton of matte as collector and frother. Magnetic separation was used to remove metallic iron-nickel alloy from the copper fractions. Distribution of cobalt was about 70 pct to the nickel fraction and 30 pct to the copper fraction. Silver reported predominately to the copper fraction, while Au, Pt, and Pd were essentially entirely recovered in the nickel fraction. [Description provided by NIOSH]
• Subjects:
  Copper Nickel Occupational Health Safety
• Keywords:
  Cobalt Flotation Magnetic Separation Mattes Separation
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• ISSN:
  1066-5552 (print)
• Publisher:
  U.S. Department of the Interior, Bureau of Mines
• Document Type:
  Text
• Genre:
  Case Report
• Place as Subject:
  Minnesota ; OSHA Region 5
• Rights:
  Public Domain
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  TCRC - Twin Cities Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  17 pdf pages
• NIOSHTIC Number:
  nn:10006354
• NTIS Accession Number:
  PB82-220278
• Citation:
  Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 8646, 1982 Jan; :1-14
• Federal Fiscal Year:
  1982
• Peer Reviewed:
  False
• Source Full Name:
  Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 8646
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:19bba4dd29976979c190fc4f9366a1b27a5477bbad3c929da093a151d526f8b18a2c943ec76d8d992581cda1f8973bfcfcd70c5f19711fc12e1eb725d94fb0e2
• Download URL:
  https://stacks.cdc.gov/view/cdc/201644/cdc_201644_DS1.pdf
• File Type:
  [PDF - 818.46 KB ]