The nature and source of copper smelter particulate emissions |
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| Authors: | John R Whyte Gordon H Geiger Krishna Seshan |
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| Affiliation: | (1) Freeport Minerals Corporation, R & D Center, P. O. Box 26, 70037 Belle Chasse, LA;(2) North Star Steel, 2901 Metro Drive, 55420 Bloomington, MN;(3) IBM, E. Fishkill, Route 52, 12533 Hopewell Junction, NY |
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| Abstract: | Particles from the inlet, outlet, and bin of electrostatic precipitators (ESPs) operating on copper reverberatory furnace
and converter off-gas streams were characterized by their chemical, mineral-ogical, morphological, and electrical properties.
Reverberatory furnace particles, nominally less than 10 microns in size, are believed to be formed by condensation of PbSO4 and ZnSO4 onto oxide particles (Fe3O4, Cu2O, SiO2) originating in the slag or concentrate. The very fine particles from the dual-nature converter dust were similar in characteristics
and probably in origin to the reverberatory furnace particles. The coarse (up to 500 microns) slag (Fe3O4, SiO2) and matte (Cu2S, Cu) particles in the converter samples probably arose from entrainment by flowing or bubbling gases. The properties of
all three sample portions varied depending on the source of the sample and the effectiveness of electrostatic precipitation.
University of Arizona |
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