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- W2036910847 abstract "A novel process was proposed for the activation pretreatment of Cr-containing limonitic laterite ores by NaOH roasting. The dechromization kinetics of the laterite ores and the effect of particle size, NaOH-ore ratio, and roasting temperature on Cr extraction were studied in detail. Experimental results indicate that decreasing the particle size and increasing the NaOH-ore ratio and roasting temperature increase the Cr extraction rate. Approximately 96% Cr in the laterite ores could be extracted under the optimal alkali-roasting conditions. The results also indicate that the Avrami model is suitable for the dechromization process and that the apparent activation energy is calculated 11.12 kJ·mol -1 . The 99.5% Cr 2 O 3 was obtained from Na 2 CrO 4 leached in the alkali solution by liquid-phase reduction and then calcining at high temperature." @default.
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- W2036910847 date "2011-05-01" @default.
- W2036910847 modified "2023-10-16" @default.
- W2036910847 title "Dechromization Kinetics of Limonitic Laterite Ores by Alkali-Roasting Method Using Sodium Hydroxide" @default.
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- W2036910847 doi "https://doi.org/10.4028/www.scientific.net/amr.233-235.798" @default.
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