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Catalysis and synergism in the reduction smelting of lead sulfide with carbon and lime

✍ Scribed by Y. K. Rao; S. K. El-Rahaiby

Publisher: American Institute of Chemical Engineers
Year: 1985
Tongue: English
Weight: 795 KB
Volume: 31
Category: Article
ISSN: 0001-1541
DOI: 10.1002/aic.690310607

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✦ Synopsis

The catalyzed direct reduction of lead sulfide with carbon and lime was investigated at several temperatures and under two different inert gas atmospheres. The catalyzed reduction kinetics were determined both with a nitrogen atmosphere and a helium-rich helium-nitrogen atmosphere. The reduction kinetics under the latter were decidedly superior to those under the former. The differences were interpreted in terms of faster diffusion rates in a helium medium and synergistic effects. The catalyst used was a ternay eutectic mixture (K, Li, NahC03, which amounted to 2.5 wt. '70 of the PbS:4CaO:4C reaction mixture.

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