Then, 2 g samples of powder after different sample soaking times and depths were mixed with 50 mL of distilled water, placed in a constant temperature vibrator for 5 min, and then allowed to stand for 48 h to ensure that free ions were fully dissolved into the water. The dissolved ...
suitable for use as feed in the production of synthetic rutile. The leaching kinetics of Fe dissolution was found to conform to the shrinking core model, where diffusion through the product layer is rate controlling. The calculated activation energy according to the Arrhenius equation was 19.13 kJ...