Report of Investigations 7459: Chemical Reactions in the Roasting of Copper Sulfides

Details

• Personal Author:
  Khalafalla, Sanaa E. ; Shah, Ishwarlal D.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  The Bureau of Mines investigated the sequence of principal chemical reactions taking place during the roasting of covellite (cus). Practically all covellite is converted to digenite (cu1.8S) before oxidation to cu2o begins. Part of the cu2o is then converted to cuo, which in turn forms cuso4 through cuo.Cuso4 as an intermediary. Cuso4 and cuo.Cuso4 decompose at 600 deg. to 700 deg. C to yield cuo and so3 (g) as final products. An overall mechanism is proposed for chemical reactions occurring at different interfaces of partially oxidized cus pellets. [Description provided by NIOSH]
• Subjects:
  Chemistry Copper Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• ISSN:
  1066-5552 (print)
• Publisher:
  United States. 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:
  26 pdf pages
• NIOSHTIC Number:
  nn:10009208
• NTIS Accession Number:
  PB-196613
• Citation:
  Washington, DC: U.S. Department of the Interior, Bureau of Mines, RI 7459, 1970 Jan; :1-21
• Federal Fiscal Year:
  1970
• Peer Reviewed:
  False
• Source Full Name:
  Washington, DC: U.S. Department of the Interior, Bureau of Mines, RI 7459
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:72b752b75070a2fe64893eddb9e07c9dc153eaf5359e3c6ee4763b2b27c5dfde86c5f573dbd26eef0d3e0bb44d6794ed363971a8d3d51b92cb32f2d026a0698c
• Download URL:
  https://stacks.cdc.gov/view/cdc/201666/cdc_201666_DS1.pdf
• File Type:
  [PDF - 800.36 KB ]