Direct reduction of mechanically activated galena and sphalerite with hydrogen

Authors
Balaz, P Briancin, J
Citation
P. Balaz et J. Briancin, Direct reduction of mechanically activated galena and sphalerite with hydrogen, J THERM ANA, 65(3), 2001, pp. 769-776
Citations number
17
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
ISSN journal
13886150 → ACNP
Volume
65
Issue
3
Year of publication
2001
Pages
769 - 776
Database
ISI
SICI code
1388-6150(2001)65:3<769:DROMAG>2.0.ZU;2-E
Abstract
In this paper the reduction of lead and zinc sulphide by hydrogen is descri bed. It has been found that the rate of formation of elemental lead or zinc is favourably affected by mechanical activation of PbS and ZnS produced by intensive grinding. This effect was observed in the region 678-1048 K for galena and in the region 851-1023 K for sphalerite. It has appeared that di sordering in the structure of both minerals results in the decrease in expe rimental activation energy.