Kinetics of Thermal Decomposition of Copper (II) Sulfate and Copper (II) Oxysulfate

Details

• Personal Author:
  Khalafalla, S. E. ; Shah, Ishwarlal D.
• Description:
  Thermal decomposition of copper (II) sulfate (cuso4) and copper (II) oxysulfate (cuo.Cuso4) are important steps in the overall oxidative roasting of covellite (cus) and chalcocite (cu2s). Nonisothermal thermogravimetric techniques were used to investigate the decomposition reactions in flowing n2 and air. Thermal decomposition of cuso4 and cuo.Cuso4 followed "linear" kinetics with an apparent activation energy of 55+/-2 and 66+/-3 kcal per mole decomposed, respectively. These apparent activation energies comply with those previously reported when isothermal kinetic techniques were used. The addition of oxygen decreased the rate of decomposition, while small amounts of iron which were admixed with cuo.Cuso4 did not have a significant effect. Neither oxygen nor iron had any appreciable effect on the apparent activation energy of the decomposition reaction. [Description provided by NIOSH]
• 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:
  TCRC - Twin Cities Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-21
• NIOSHTIC Number:
  nn:10008879
• NTIS Accession Number:
  PB-210170
• Citation:
  NTIS: PB 210 170 :21 pages
• Federal Fiscal Year:
  1972
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 210 170
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c267d0af319ad2100c6742a8aadbc9a40ef15ec85c8daddec5442ae3dd72157e257b27f7cb369d533686d85cc400e9f1b5614fd9469a6240d661bf21f0bf921a
• Download URL:
  https://stacks.cdc.gov/view/cdc/237848/cdc_237848_DS1.pdf
• File Type:
  [PDF - 6.15 MB ]