Evaporative Crystallization of Aluminum Chloride Hexahydrate

Details

• Personal Author:
  Nehl FH ; Nicks, Larry J.
• Description:
  As part of a U.S. Bureau of Mines research program to study processes for extraction of alumina from domestic resources, a bench- scale evaporate crystallizer was operated with solutions of impure aluminum chloride hexahydrate (ach). The purpose of the research was to determine the distribution of impurities in the bleedstream section of a proposed clay-hcl process. Impurities including mg, p, na, k, cr, and s were determined in ach crystals produced from feed solutions with a threefold range of impurities and at varied crystallizer slurry percent solids. Phosphorus was the limiting contaminant; 0.83 pct of the process alumina would have to be discarded for control. Crystallizer slurry in the range of 10 to 25 pct solids had little effect on crystal purity. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Open File Report
• Document Type:
  Text
• Genre:
  Conference Publications
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  RERC - Reno Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-11
• NIOSHTIC Number:
  nn:10011649
• NTIS Accession Number:
  PB92-209261
• Citation:
  NTIS: PB 92-209261 Available for Reference At Bureau Libraries :11 pages
• Federal Fiscal Year:
  1992
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 92-209261; Available for Reference At Bureau Libraries
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:34855e7b310d72587581e2de63e836ad4b2d53ff2690764d513ca903893e1c4537f76bfd67434067aa3072b11f0e071edf66ccbcfb44f125504c9f7fbdea80d6
• Download URL:
  https://stacks.cdc.gov/view/cdc/207065/cdc_207065_DS1.pdf
• File Type:
  [PDF - 514.75 KB ]