High Temperature Hydrolysis of Aluminum Sulfate Solutions

Details

• Personal Author:
  Shanks DE
• Description:
  Alohso4 is precipitated from al2(so4)3 solutions, such as obtained by leaching aluminous ores, e.g., clays, by hydrolysis at >300 deg c at appropriate pressures in an autoclave. The alohso4 is easily rinsed to remove impurities and is readily converted to metallurgical-grade al2o3 by calcination. Thus, solutions containing al2(so4)3 were hydrolyzed at 170 deg-320 deg c. The product obtained at <300 deg c had a composition and x-ray diffraction pattern corresponding to those of (h3o)2al6(so4)4(oh)12 and the yield was lower than at >300 deg c. At >300 deg c, alohso4 was the product. [Description provided by NIOSH]
• Subjects:
  Aluminum Compounds Metals Occupational Health Safety
• Keywords:
  Aluminum Hydrolysis Metal Compounds Metallurgical Processes
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Other
• Place as Subject:
  Nevada ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  RERC - Reno Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-4
• NIOSHTIC Number:
  nn:10003482
• Citation:
  US Pat 4,394,368 1983 Jul; :1-4
• Federal Fiscal Year:
  1983
• Peer Reviewed:
  False
• Source Full Name:
  United States Patent 4,394,368
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:658994c3a5a198686d223565dbc3da5ae2d08beb48d120d47dbf1b24e3114bd3e4882537657b322c611d11ca99b62c8b48b27be612d9261a8fe2837c3eb5812e
• Download URL:
  https://stacks.cdc.gov/view/cdc/219485/cdc_219485_DS1.pdf
• File Type:
  [PDF - 259.36 KB ]