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Kinetic Study on Sulfuric Acid Dissolution of NaxH2-xTiO3 from Sodium Hydroxide Molten Method

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Abstract:

The dissolution kinetic of NaxH2-xTiO3 (resulting from high titanium slag treatment by NaOH) by diluted sulfuric acid (38~51 wt. %) was carried out in temperature range of 10 to 50°C with an initial acid/NaxH2-xTiO3 (wt.) ratio of 1:1. The effects of the sulfuric acid concentration and temperature on titanium dissolution percent were reported, and both of them significantly affected the dissolution rate. The experimental data indicate that the shrinking core model controlled by diffusion in product layer is most applicable for the titanium dissolution process, and the apparent activation energy has been estimated to be 28.69 kJ/mol.

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Periodical:

Advanced Materials Research (Volumes 881-883)

Pages:

1545-1548

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.881-883.1545

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Online since:

January 2014

Authors:

Wei Jing Wang, Tian Yan Xue, Dong Wang, Tao Qi*

Keywords:

Acid Dissolution, Kinetic, Sodium Hydroxide Molten Method, Titanyl Sulfate Solution

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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