Calculation of the solubility of TiO sub(2) and titanates in sulfuric acid solutions

Calculation of the solubility of TiO sub(2) and titanates in sulfuric acid solutions

The Gibbs energies of formation of Ti(IV) hydrolysis forms have been obtained, and they can be used to calculate the TiO sub(2) solubility as a function of the hydrogen ion concentration (pH). The dependence of the change of the Gibbs energy during dissolution of various ilmenites on mole fraction o...

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Veröffentlicht in:Russian metallurgy Metally 2014-09, Vol.2014 (9), p.704-707
Hauptverfasser: Kramer, S M, Gorichev, I G, Lainer, YuA, Artamonova, I V, Terekhova, M V
Format: Artikel
Sprache:eng
Schlagworte:
Conversion
Dissolution
Free energy
Heat of formation
Mathematical analysis
Solubility
Titanates
Titanium dioxide
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Zusammenfassung:The Gibbs energies of formation of Ti(IV) hydrolysis forms have been obtained, and they can be used to calculate the TiO sub(2) solubility as a function of the hydrogen ion concentration (pH). The dependence of the change of the Gibbs energy during dissolution of various ilmenites on mole fraction of TiO sub(2) in compounds is established. A method to increase the rate of dissolution of low soluble titanates by their conversion into compounds with a higher solubility is proposed.
ISSN:0036-0295
1555-6255
DOI:10.1134/S0036029514090109