Zhaobo Liu, Hongxu Li
A completely new process of selectively recovering Sc 3+ without the impurity of Fe 3+ from Bayer red mud was developed. Prior to the water leaching process, red mud is digested and sulfated at a low temperature, then roasted at a higher temperature for a set duration. The roasting process generates byproducts such as SO 2, SO 3, and H 2SO4 that can be recycled as raw materials for sulfuric acid production. The leaching results demonstrate that the roasting temperature and time significantly influence the selective leaching performance of scandium. When sulfated red mud is roasted at 750 °C for 40 minutes and subjected to a water leaching process at 50 °C for 30 minutes, 53.0 wt% of Sc 3+, <1.0 wt% of Fe 3+, <0.3 wt% of Si 4+, and approximately 8.9 wt% of Al 3+ are leached out. Notably, the solid-liquid separation process is straightforward and effective.
@article{869e1deb-208b-4865-b6f7-8b59dd36d4f9,
title={Selective Recovery of Scandium From Sulfating Roasting Red Mud By Water Leaching},
author={Zhaobo Liu and Hongxu Li},
year={2017},
language={en}
}TY - JOUR TI - Selective Recovery of Scandium From Sulfating Roasting Red Mud By Water Leaching AU - Zhaobo Liu AU - Hongxu Li PY - 2017 LA - en ER -
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