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- W2002051346 abstract "The recovery of vanadium from heavy oil fly ash having a high carbon content was performed using a four-step process consisting of a preliminary burning in order to reduce the carbonaceous fraction, followed by an acid leaching and an oxidative precipitation of vanadium pentoxide. The preliminary burning was conducted in the temperature range 650 to 1150 °C, below the initial deformation temperature (IDT) of the fly ash. The temperature of the preliminary burning step was revealed to be a significant parameter. Above 950 °C various phenomena (fusion, volatilisation of V, formation of V–Ni refractory compounds) occurred that adversely affected the recovery of vanadium. The burning temperature of 850 °C was found to be the best as a result of the trade-off between the overall vanadium recovery yield (83%) and the V2O5 weight percentage in the precipitate (84.8%)." @default.
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- W2002051346 date "2001-12-01" @default.
- W2002051346 modified "2023-10-16" @default.
- W2002051346 title "Recovery of vanadium from a previously burned heavy oil fly ash" @default.
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- W2002051346 doi "https://doi.org/10.1016/s0304-386x(01)00193-1" @default.
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