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- W2044880560 abstract "Natural Australian beach sand ilmenites and their preoxidised derivatives were reduced to metallic iron and titanium oxides by carbon monoxide at temperatures in the range 800–1200 °C. Particular care was taken to maintain a constant driving force for reduction using small samples and high gas flow rates. Over the entire temperature range studied, the natural minerals were found to reduce more rapidly than the corresponding preoxidised materials, although preoxidation was found to improve the extent of metallisation of the product. Heating the natural minerals in an inert atmosphere prior to reduction decreased their reactivities by approximately 70%. It is suggested that at temperatures below about 900 °C the reduction is controlled by the chemical reaction rate, but that a transport-controlled mechanism gradually takes over as the temperature is increased. At 1000 °C the reduction is apparently controlled by diffusion of carbon monoxide through the external gas film. With increasing temperature above about 1050 °C, when the reaction mass begins to sinter, the reduction rate decreases." @default.
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- W2044880560 date "2007-04-25" @default.
- W2044880560 modified "2023-10-09" @default.
- W2044880560 title "Kinetics of gaseous reduction of ilmenite" @default.
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- W2044880560 doi "https://doi.org/10.1002/jctb.5020250802" @default.
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