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New Horizons For Processing And Utilizing Red Mud, M. Archambo
New Horizons For Processing And Utilizing Red Mud, M. Archambo
Dissertations, Master's Theses and Master's Reports
Red mud is an industrial slurry waste that is produced as a byproduct of the Bayer process for alumina. The waste is generated in large quantities, up to a ratio of 2:1 against the valued product alumina. Red mud exhibits many chemical and physical properties that categorize it as a hazardous material. Due to the addition of sodium hydroxide in processing, the pH is typically at values close to 13. Small particle size discourages separation from water for disposal, so drying red mud happens over many years.
The pH of red mud can be reduced with inexpensive reagents. Carbon dioxide …