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2017年 第11卷 第3期

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《化学科学与工程前沿（英文）》 >> 2017年 第11卷 第3期 doi: 10.1007/s11705-017-1653-z

Materials sustainability for environment: Red-mud treatment

. Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, MA 01609-2280, USA.. Department of Material Science and Engineering, Worcester Polytechnic Institute, Worcester, MA 01609-2280, USA

录用日期： 2017-06-27 发布日期： 2017-08-23
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Bayer’s process revolutionized the extraction of aluminum from the bauxite ores. However, the hydrothermal extraction of alumina is associated with the generation of a byproduct, red-mud consisting of undissolved solids composed of iron oxides, sodium alumino silicates, titania, silica and rare earth elements. The accumulation of red-mud (or bauxite residue) in the world is 30 billion metric tons produced at a rate of 125 million tons per annum (2013). Utilization of red-mud for constructional purposes, wastewater treatment, metallurgical products, and pigments are listed. Metallurgical processing efforts of red-mud to generate various value added products such as pig iron, direct reduced iron slag wool, magnetite, titania, iron carbides are presented in the article.

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