Recovery of Titanium from Perovskite by Acid Sulfation

Details

• Personal Author:
  Martin DA ; Peterson AE ; Shirts, M. B.
• Description:
  The ca-containing ti ores of the perovskite type (with ca titanate) are mixed with excess h2so4 for leaching in a digester at 130-338 deg c. The sulfated residue is separated from excess h2so4 by filtration and leached with water at up to 150 deg c to obtain up to 200 g ti sulfate /l for separation from insoluble caso4. The purified ti sulfate in solution is processed by a hydrothermal precipitation to obtain tio2 suitable for pigment. Thus, perovskite ore concentrate (containing tio2 47, cao 26.2 and fe2o3 3.2%) 100 G was powdered to -100 mesh and treated with 96% h2so4 500 g in an autoclave at 300 deg c for 10 min. Sulfated residue 275 g was filtered from hot acid and leached with 500 ml of water to dissolve 92% of the ti for filtration separation from caso4. The resulting solution containing 56 g ti/l was processed by hydrothermal precipitation to obtain hydrous tio2. [Description provided by NIOSH]
• Subjects:
  Metals Mining Occupational Health Safety Titanium
• Keywords:
  Metallurgical Processes Metallurgy Mining Industry
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Other
• Place as Subject:
  OSHA Region 8 ; Utah
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  SLRC - Salt Lake City Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-6
• NIOSHTIC Number:
  nn:10005034
• Citation:
  US Pat 4,562,049 1985 Dec; :1-6
• CAS Registry Number:
  Titanium (CAS RN 7440-32-6)
• Federal Fiscal Year:
  1986
• Peer Reviewed:
  False
• Source Full Name:
  United States Patent 4,562,049
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5cb6e75785a4ab2bd92c63e941a7de38374ec28e4c6a59fd779183491f3a68159c365296ca00045f353f58e0434c0d89b2b3948881d1fd66bf04cdd66503603e
• Download URL:
  https://stacks.cdc.gov/view/cdc/219631/cdc_219631_DS1.pdf
• File Type:
  [PDF - 551.32 KB ]