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- W4320486898 abstract "In order to reduce CO2 emission during utilization of solid vanadium slag, a novel and cleaner method for selective oxidation of vanadium by oxidant CO2 was proposed. The extraction ratio of V increased from 83.1 % to 93.2 % with increasing temperature from 800 °C to 1000 °C. The conversion ratio of CO2 to CO in the CaCO3-vanadium slag was 23.3 % at 800 °C. The roasting of CaCO3-Cr2O3, CaCO3-V2O3 and CaCO3-vanadium slag were investigated and the gases produced in the roasting were analyzed by gas chromatography. Thermodynamic calculations showed that V2O3 and VO2 in the presence of CaCO3 at 800 °C, 900 °C, and 1100 °C could be oxidized to Ca3V2O8. Due to lack of CaV2O4 data in the thermodynamic database, the reaction of CaV2O4 and CO2 was firstly simulated by Ab initio molecular dynamics. The results indicated that CaV2O4 could be oxidized by CO2 and CO gas was produced. This novel roasting process can further achieve effective and green utilization of vanadium slag." @default.
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- W4320486898 date "2023-05-01" @default.
- W4320486898 modified "2023-10-18" @default.
- W4320486898 title "Selective oxidation of vanadium from vanadium slag by CO2 during CaCO3 roasting treatment" @default.
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- W4320486898 doi "https://doi.org/10.1016/j.seppur.2023.123407" @default.
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