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- W2996091608 abstract "Ilmenite is major source of titanium dioxide production and contains high concentration of iron. It is crucial to selectively remove iron impurities during the titanium production process. The present study investigated the acid and flux fusion digestion techniques for complete dissolution of ilmenite and subsequent separation of iron and titanium by precipitation process. Analytical results indicated that the Na2HPO4/NaH2PO4·H2O, Na2B4O7 and LiBO2 flux fusion procedures were the most effective for complete dissolution of ilmenite mineral. The separation of Fe(II) and Ti(IV) from the phosphate fused solution by selective precipitation was studied using phenanthroline (phen), sodium tetraphenylborate (NaTPB) and 2-mercaptopyridine N-oxide sodium salt (NaPT) as precipitants. The combination of phen and NaTPB showed poor selectivity for the precipitation of either Ti(IV) or Fe(II) and both metals collectively precipitated under the investigated experimental conditions. Negligible selectivity was observed when only sodium tetraphenylborate was used. The selective separation of Fe(II) and Ti(IV) from fused solution using NaPT as precipitant was extremely successful with 100(1)% Fe(II) recovered in the precipitate (no titanium observed in precipitate) while 99.6(1)% Ti(IV) remained in the filtrate (no iron observed in the filtrate)." @default.
- W2996091608 created "2019-12-26" @default.
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- W2996091608 date "2020-01-01" @default.
- W2996091608 modified "2023-10-11" @default.
- W2996091608 title "Selective precipitation study for the separation of iron and titanium from ilmenite" @default.
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- W2996091608 doi "https://doi.org/10.1016/j.hydromet.2019.105242" @default.
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