Report of Investigations 8744: Leaching Rates for the HCl Extraction of Aluminum from Calcined Kaolinitic Clay

Details

• Personal Author:
  Bullard, Sophie J. ; Gruzensky, W. G. ; Henry, Jack L. ; Mrazek, Robert V. ; Olsen, Richard S.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  The Bureau of Mines is engaged in research to recover aluminum from kaolinitic clay and other nonbauxitic domestic resources. As part of this work, calcined Georgia kaolin was prepared by a process that prevents slime formation and makes the leached residues fast settling and easy to filter. The leching reaction for calcined kaolinitic clay in a 5 pct stoichiometric excess of boiling 23- to 26-pct HCl was found to be zero order. Rate constants based on the weight-fraction of aluminum in the clay were found to be between 0.095 and 0.15 min-1 depending on feed preparation and leaching parameters. The mathematical relationships between aluminum extraction and time for both batch and continuous, stirred-tank operations were derived and verified experimentally. [Description provided by NIOSH]
• Subjects:
  Aluminum Compounds Aluminum Oxide Hydrochloric Acid Mining Occupational Health Safety
• Keywords:
  Aluminum Aluminum Oxide Extractive Metallurgy Hydrochloric Acid Hydrometallurgy Kaolinite Leaching
• 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:
  Georgia ; Oregon ; OSHA Region 10 ; OSHA Region 4
• Rights:
  Public Domain
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALRC - Albany Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  14 pdf pages
• NIOSHTIC Number:
  nn:10002706
• NTIS Accession Number:
  PB83-187575
• Citation:
  Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 8744, 1983 Feb; :1-11
• Federal Fiscal Year:
  1983
• Peer Reviewed:
  False
• Source Full Name:
  Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 8744
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ac7cb595f8d3c5d9210e6a0387eeaaa8a28d8d7f958905d1e271dbc32982301b28a2f41094bc18bb7a09e8e2899bd572eaf85654b82479b24390454aa7c1080d
• Download URL:
  https://stacks.cdc.gov/view/cdc/201757/cdc_201757_DS1.pdf
• File Type:
  [PDF - 658.59 KB ]