Extraction of Mercury from Mercury-Bearing Materials

Details

• Personal Author:
  Henrie, Thomas A. ; Lindstrom, Roald E. ; Scheiner, Bernard J.
• Description:
  A method is described for leaching hg from hg-bearing materials by electrolysis. e.g., 1,350 g of -35 mesh ore, containing 2.5 Lb hg/ton, was mixed with 300 g nacl and 2,500 ml h2o in a 4-l beaker. Graphite electrodes were immersed in the pulp, and electrolysis was initiated. In the preliminary test the following conditions were employed: a treatment rate of 5 a, a current density of 0.3 A/in2, a pulp density of 35 wt pct, a salt concentration of 10 wt pct, and a reaction temperature of 30 deg. C. A group of subsequent tests was conducted in each of which one variable was modified accordingly; in one group, the salt concentration varied from 5 to 20 pct; in a second group, the temperature varied from 25 deg. to 50 deg. C; in a third group, the c.D. Varied from 0.15 to 1.0 A/in2; in a fourth group, the current load varied from 2.5 to 10 a. Throughout all these tests 90-99 pct of the hg was extracted from the ore. [Description provided by NIOSH]
• Subjects:
  Mercury Occupational Health Safety
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Other
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  RERC - Reno Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  4 pdf pages
• NIOSHTIC Number:
  nn:10011866
• Citation:
  U S Pat 3 639 222 1972 Feb; :
• Federal Fiscal Year:
  1972
• Peer Reviewed:
  False
• Source Full Name:
  U.S. Pat. 3,639,222; Feb. 1, 1972; Chem. Abstr. 76:120,900J
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9cb50b8c70002f203026e5a072d50de88b1384fce2da57f5d1e7b177e48caa43de6733555cf754552a75134532274e095ce9ed17856f4b342f5238b4894b12bf
• Download URL:
  https://stacks.cdc.gov/view/cdc/236312/cdc_236312_DS1.pdf
• File Type:
  [PDF - 199.07 KB ]