Report of Investigations 8759: Alumina Miniplant Operations - Overall Mass Balance for Clay-HCl Acid Leaching

Details

• Personal Author:
  Hunter, Don B. ; Sawyer, Dwight L. Jr. ; Turner, Theodore L.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  To provide technology that can help decrease the dependence of the U.S. aluminum industry on imported bauxite, the main ore of aluminum, the Bureau of Mines is investigating the extraction of aluminum from abundant domestic reserves of kaolinitic clay. Miniplant studies of the continuous leaching of calcined kaolin with boiling 25-pct hcl acid resulted in a 93- to 99-pct extraction of the acid-soluble alumina in the calcined kaolin feed. Data are presented for an acid leaching study carried out in three or four continuously stirred tank reactors (cstr) in series, feed rates of 100 to 250 lb/hr of calcined kaolin, and total nominal residence times of 0.7 to 2.3 Hr. A material balance for a 176-lb/hr calcined kaolin feed rate in a circuit consisting of three reactors, four classifiers, and five thickeners is given. Data provide detailed compositional and physical information for calcined kaolin, process liquors, and acid-leached residue solids. [Description provided by NIOSH]
• Subjects:
  Aluminum Compounds Hydrochloric Acid Mining Occupational Health Safety
• Keywords:
  Acid Treatment Aluminum Clay Minerals Hydrochloric Acid Kaolinite Leaching Materials Recovery Roasting
• 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:
  Nevada ; OSHA Region 9
• Rights:
  Public Domain
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  BCEL - Boulder City Engineering Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  38 pdf pages
• NIOSHTIC Number:
  nn:10002801
• NTIS Accession Number:
  PB83-214346
• Citation:
  Boulder City, NV: U.S. Department of the Interior, Bureau of Mines, RI 8759, 1983 Apr; :1-29
• Federal Fiscal Year:
  1983
• Peer Reviewed:
  False
• Source Full Name:
  Boulder City, NV: U.S. Department of the Interior, Bureau of Mines, RI 8759
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8828d850412ab2fc5c5ac64fed798768774b600369b0d7bbaa3950258ca50d1ec0b9bc52b84e25484b5620b3fed18780814f018fa539bef18e14f35e1d737f48
• Download URL:
  https://stacks.cdc.gov/view/cdc/201758/cdc_201758_DS1.pdf
• File Type:
  [PDF - 1.94 MB ]