Report of Investigations 8457: Pneumatic Concentration of Mica

Details

• Personal Author:
  Davis, Broderick E. ; Jordan, C. E. ; Sullivan, Gerald V.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  The Bureau of Mines is conducting research into the pneumatic recovery of coarse mica and has used this method to produce mica concentrates that contain more than 90 percent mica. This research is being carried out pursuant to the Bureau's objective to develop technology that will help maintain an adequate supply of minerals and metals to meet national economic and strategic needs. Researchers used a Bureau-designed system of crushers, screens, and zigzag air classifiers to concentrate coarse liberated mica particles from mica-bearing materials. This pneumatic system was used to concentrate four mica ores from Arizona, North Carolina, and South Dakota and three waste tailings from Alabama, Georgia, and South Dakota. Using these samples, it was demonstrated that plus 65- mesh size mica can be effectively recovered by the pneumatic method. Not only were the concentrates high in mica content; it was also demonstrated that this method can be used to recover up to 78 percent of the mica that was originally contained in the samples. Because it is a dry concentration method, the pneumatic beneficiation technique may be advantageous in areas where water resources are limited. [Description provided by NIOSH]
• Subjects:
  Metals Minerals Mining Occupational Health Safety
• Keywords:
  Metal-mining Mineral-processing Mining-industry
• 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:
  Alabama ; Arizona ; Georgia ; North Carolina ; OSHA Region 4 ; OSHA Region 8 ; OSHA Region 9 ; South Dakota
• Rights:
  Public Domain
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  TURC - Tuscaloosa Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  29 pdf pages
• NIOSHTIC Number:
  nn:10006897
• NTIS Accession Number:
  PB81-150005
• Citation:
  Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 8457, 1980 Jan; :1-24
• Federal Fiscal Year:
  1980
• Peer Reviewed:
  False
• Source Full Name:
  Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 8457
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:faf5d42e9b6d1c8d219627fd9e3da30aec3ec4e9e4f7c3065253c4735ea10196289846da793568cdea12de6804ea9fd0f3702987199cd5eea175c7fdfb570228
• Download URL:
  https://stacks.cdc.gov/view/cdc/201821/cdc_201821_DS1.pdf
• File Type:
  [PDF - 1.51 MB ]