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Development of New Chemistry for the Vapor Phase Extraction of Metals from Ores and Secondary Materials.

Authors
Hager-JP; Schiller-B; James-SE; Et Al
Source
NTIS: PB/81-125320 :175 pages
Link
NIOSHTIC No.
10007148
Abstract
To add to the basic information bank on voltalization methods for recovering metals from ores, a study was made of vapor complexes such as cu2nacl3, aucu2cl3, agcu2cl3, agfecl4, pbfe2cl8, znfecl5, and cdfe2cl8. A special inlet system was devised that allowed equilibrated high-temperature vapors from an atmospheric-pressure flow reactor to be leaked into the ion source of a time-of-flight mass spectrometer without compositional changes. A modified transpiration system allowed the carrier gas to be equilibrated with two different condensed samples. Vapor pressures were measured for some species, and enthalpies and Gibbs energy changes were measured for some vapor reactions. Discrepancies in janaf tables data for cu3cl3 and pbcl4 were discovered. The major loss of lead chloride from a fused-salt bath containing pbcl2 was shown to be possible due to pbocl2(g). In the volatilization of antimony from oxide mixtures, the vapor species sbco+ was observed; it was speculated that this may have come from sb2o2co3(g).
Publication Date
19800101
Document Type
CP; Final Contract Report;
Fiscal Year
1980
NTIS Accession No.
PB81-125320
NTIS Price
A09
Identifying No.
OFR 119-80
NIOSH Division
RERC;
Source Name
NTIS: PB/81-125320
State
CO;
Performing Organization
Colorado School of Mines
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