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FILTRATION MAP OF BAUXITE RESIDUES – FILTERABILITY OF RED MUD FROM SEVERAL BAUXITES AND POSSIBLE USE OF CONTINUOUS PRESSURE FILTRATION LIKE HI-BAR FILTRATION

Reinhard Bott, Thomas Langeloh, Jurgen Hahn

Bauxite residue production in Al-refi neries ranges to 100 million t/a world-wide and will further increase in future due to decreasing bauxite quality and increasing number of production facilities. Numerous attempts have been undertaken by producers to improve the effi ciency and safety of red mud disposal or to make it available for industrial re-usage.