We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Experimental Investigation of TiO<sub>2</sub> Pigment Production by Electrodialysis Process from Ilmenite Concentrate.
- Authors
Meysami, Amirhossein; Golestani, Armin; Khangah, Abdol Hossein; Meysami, Mohammad; Dehghanpour, Hassan
- Abstract
A laboratory-scale setup has been developed for the electrodialysis (ED) of solutions containing titanium which were prepared from the leaching of ilmenite concentrate in concentrated sulfuric acid. The final product was high-purity TiO2 pigment. The operating parameters, including initial feed concentration (17–28 g/L−1 of titanium and 9–10.2 g/L−1 of iron), input voltage (30–60 V), and flow rate (70–220 mL/min−1) were evaluated during the ED process. Increasing the input voltage raised the recovery efficiency up to 91% with a feed concentration of 17 g/L−1 of titanium and a flow rate of 70 mL min−1. However, increasing the feed concentration enhanced the recovery efficiency up to 96%. The maximum current efficiency achieved was 20.37% at 60 Vs and feed concentrations of 17 g/L−1 of titanium and 9 g/L−1 of iron. The values of the cation transfer number for separating Fe2+ from solutions containing titanium are in the range of 0.72–0.81. The TiO2 pigment was produced by hydrolysis and calcination of the outlet solution. The produced pigments were analyzed by X-ray diffraction and field-emission scanning electron microscopy. The results showed that the produced TiO2 pigments are composed of the anatase phase as a major component with an average purity of 97%.
- Subjects
ILMENITE; MANUFACTURING processes; SCANNING electron microscopy; IRON
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2023, Vol 75, Issue 12, p5176
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-023-06185-8