Partial Metallization of Coal-Added Pellets for Smelting Reduction
2000-11-14
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Partial Metallization of Coal-Added Pellets for Smelting Reduction
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2000-11-14
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University of Minnesota Duluth
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Technical Report
Abstract
In NKK's Duplex-DIOS process, maximum annual productivity is
obtained when a DIOS reactor is operated with 30% metallized feed . Laboratory tests
were performed to ascertain if 30% metallization could be achieved consistently and
with sufficient strength by adding coal less than the stoichiometric requirements.
Partially metallized pellets were prepared using an LTV Steel Mining filter cake sample
by adding coal in the amount of 35% of the stoichiometric requirements to both unfluxed
and fluxed pellets. The optimum temperature of induration was in the range of 1200° to
1300°C. The product analyzed 25 to 30% metallization with compression strengths of
150 to over 300 lb, and apparent densities of 3.4 to 3.5.
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Project #5699133
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University of Minnesota Duluth, Natural Resources Research Institute, 5013 Miller Trunk Highway, Duluth, MN 55811-1442; Coleraine Minerals Research Laboratory, One Gayley Avenue, Box 188, Coleraine, MN 55722
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Iwasaki, Iwao. (2000). Partial Metallization of Coal-Added Pellets for Smelting Reduction. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/188409.
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