Preparation of Crystalline Hematite from Bauxite

Abstract:

A novel of hydrothermal stripping technique is developed to synthesize nano-particles of ferric oxide from iron-loaded organic phase by ammonia. The iron-loaded organic phase was prepared by extracting simulated bauxite hydrochloric acid leaching liquors with N235 and then the iron is stripped by heating the organic phase up to 180°C to precipitate as ferric oxide. XRD patterns exhibits that the ferric oxide is composed of α-Fe2O3 and TEM images reveals that the particles of crystalline hematite powders are homogenous with quasi-spherical fine crystallites and its primary particles are about 150 nm. This process is a proof of concept for the removal and precipitation of iron from bauxite hydrochloric acid leaching liquors.

• Periodical: Advanced Materials Research (Volume 936)
• Pages: 1153-1157
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.936.1153
• Online since: June 2014
• Authors: Juan Liu, Qian Qian Jiang, Jing Wang, Li Chen, Xing Yao Wang*
• Keywords: Bauxite, Ferric Oxide, Hydrothermal Stripping, Nanoparticle

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