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A process is being developed to recycle zinc-bearing metallurgical dust by reductive sintering. In the present work, the reaction behavior of zinc and iron oxides was studied in different conditions in CO–CO2 atmosphere, to understand the processes involved and determine the optimal conditions. The results showed that dezincification started to become significant when the coke addition was 9.0 wt...
Flue gas recirculation (FGR) has been implemented for exhaust gas emissions reduction in iron ore sintering. However, the mechanism of NOx reduction through FGR is still unclear. In this paper, the laboratory pot-grate sintering test showed a 30% reduction in gas flow and 15.51% reduction in NOx emissions achieved with a 30% FGR ratio, and the sinter indexes almost matched those of the conventional...
Both the consumption and production of crude stainless steel in China rank first in the world. In 2011, the nickel production in China amounted to 446 kilotons, with the proportion of electrolytic nickel and nickel pig iron (NPI) registering 41.5% and 56.5%, respectively. NPI is a low-cost feedstock for stainless steel production when used as a substitute for electrolytic nickel. The existing commercial...
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