Report of Investigations 9369: Solubility of Lead and Distribution of Minor Elements Between Bullion and Calcium Ferrite Slag at 1,250 C

Details

• Journal Article:
  Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 9369
• Personal Author:
  Bennington, K. O. ; Fisher, George T. II
• Description:
  The U.S. Bureau of Mines conducted research on calcium ferrite slags to determine the distribution of Pb and monor elements (Ag, Cd, Zn, and Co) between Pb bullion and slag. The fundamental data are required to evaluate nonferrous smelting with calcium ferrite slags as a substitute for conventional iron silicate slags. Determinations were made in 25-cu cm capacity MgO crucibles at 1,250 C for 2 h in a CO-CO2 atmosphere with an O2 potential that would retard the formation of magnetite. Calcium ferrite slag composition variables studied were from 16 to 32 wt pct CaO in 2-pct increments and SiO2 ranging from 1 to 5 wt pct in 1-pct increments with equal additions of MgO. For all compositions studied, the retention of Pb in the calcium ferrite slag was less than 1 wt pct, which compares favorably to about 6 wt pct Pb in conventional iron silicate slags used in smelting of Pb concentrates. Minor element distribution was insensitive to changes in slag composition in the range studies. However, slag composition had significant impact on the melting and fluidity of the slag. [Description provided by NIOSH]
• Subjects:
  Calcium Chemistry Lead Metals Metal Workers Occupational Health Safety
• Keywords:
  Chemical-composition; Retention; Silver; Cadmium; Oxygen; Absorption-spectra; Thermodynamics; Metal-industry; Cobalt; Zinc; Experimental-design; Chemical-analysis; Lead-Metal; Solubility; Smelting; Slags; Extractive-metallurgy
• Source:
  Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 9369, 1991 Jan; :1-9
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  Oregon ; OSHA Region 10
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALRC - Albany Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  15 pdf pages
• NIOSHTIC Number:
  nn:10009162
• NTIS Accession Number:
  PB91-231670
• Federal Fiscal Year:
  1991
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c30cab26230306dbe18728cc21e0fee8b8d9bab710d27e8e568eb827cbf0f20eac0f91ab79dfa49a5cf663881c9e704756c6dcdd6586935c773b08cfbe00bcef
• Download URL:
  https://stacks.cdc.gov/view/cdc/10243/cdc_10243_DS1.pdf
• File Type:
  [PDF - 554.75 KB ]