0038-223X 0038-223X S0038-223X2012000600010 South Africa UK 00
06 2012 00 06 2012 112 6 461 465    Gas-phase extraction of lead
and iron from their oxides in a fluidized-bed reactor    L.D.
van DykI; E.M.R. MaribaI; Y. ChenI, II; A. JohnsonI; J.H.
PotgieterI, III  ISchool of Chemical and Metallurgical
Engineering, University of the Witwatersrand, South Africa
IIProcess and Environmental Research Division, Faculty of
Engineering, University of Nottingham, Nottingham, UK
IIIDivision of Chemistry & Environmental Science, School of
Science and the Environment, Manchester Metropolitan University,
Manchester, UK     The extraction of iron and lead from their
oxides with a volatile organic ligand such as acetylacetone in
the gas phase offers potential advantages of lower energy
consumption, recycling of the extractant, recovery of pure
metals, and a reduced environmental impact compared with
conventional extraction processes. The influence of reaction
temperature, ligand flow rate, and metal oxide levels on the
extr