An environmentally friendly method for removing sodium in red mud

László Kótai, István E. Sajó, István Gács, Katalin Papp, András Bartha, György Bánvölgyi

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Abstract

Iron(III) sulfate or its mixture with aluminium sulfate can be used as a solid phase sulfatizing agent to destroy sodium aluminium silicates in red mud within 2 h at 200-500°C. These solid phase sulfatizing agents transform sodium aluminium silicates and basic sodium-compounds into water-soluble sodium sulfate without SO2 or SO3 evolution. By means of an aqueous leaching of the sulfatized red mud a raw material with high iron and low sodium content is obtained for blast furnace technologies.

Original languageEnglish
Pages (from-to)1278-1279
Number of pages2
JournalChemistry Letters
Volume35
Issue number11
DOIs
Publication statusPublished - Nov 5 2006

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ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Kótai, L., Sajó, I. E., Gács, I., Papp, K., Bartha, A., & Bánvölgyi, G. (2006). An environmentally friendly method for removing sodium in red mud. Chemistry Letters, 35(11), 1278-1279. https://doi.org/10.1246/cl.2006.1278