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

PB81125320

Publication Date	1980
Personal Author	Hager, J. P.
Page Count	180
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 possibly due to PbOCl2(g). In the volatilization of antimony from oxide mixtures, the vapor species SbCO(+1) was observed; it was speculated that this may have come from Sb2O2CO3(g).
Keywords	Materials recovery Metaliferous minerals Complex compounds Vapor phases Transport properties Vaporization Laboratory equipment Extraction Mass spectrometers Gibbs free energy Design criteria Performance evaluation Thermodynamic properties Flow reactors
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries 99F - Physical & Theoretical Chemistry
Corporate Authors	Colorado School of Mines, Golden.; Bureau of Mines, Washington, DC.
Document Type	Technical Report
Title Note	Open file rept. (Final) 1 Aug 75-31 May 79.
NTIS Issue Number	198108

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

Development of New Chemistry for the Vapor Phase Extraction of Metals From Ores and Secondary Materials.
PB81125320

Publication Date	1980
Personal Author	Hager, J. P.
Page Count	180
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 possibly due to PbOCl2(g). In the volatilization of antimony from oxide mixtures, the vapor species SbCO(+1) was observed; it was speculated that this may have come from Sb2O2CO3(g).
Keywords	Materials recovery Metaliferous minerals Complex compounds Vapor phases Transport properties Vaporization Laboratory equipment Extraction Mass spectrometers Gibbs free energy Design criteria Performance evaluation Thermodynamic properties Flow reactors
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries 99F - Physical & Theoretical Chemistry
Corporate Authors	Colorado School of Mines, Golden.; Bureau of Mines, Washington, DC.
Document Type	Technical Report
Title Note	Open file rept. (Final) 1 Aug 75-31 May 79.
NTIS Issue Number	198108