Development and utilisation of Bayer process by-products
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The Bayer Process is the hydrometallurgical treatment of bauxite ore for the extraction of alumina. This thesis reports on the development and utilisation of key by-products including:• Carbonated Red Mud and Alkaloam® - produced from the fine bauxite residue commonly termed red mud• Red Sand™ - manufactured from coarse bauxite residue• Red Lime™ - a by-product of liquor causticisation• Bayer-derived geopolymers - a cement replacement made from processed Bayer liquor.
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Jamieson, Evan; Penna, B.; Van Riessen, Arie; Nikraz, Hamid (2015)© 2016 Elsevier B.V. The Bayer process is the hydrometallurgical production of alumina, subsequently used within the chemicals industry and for smelting to aluminium. Bauxite deposits have with time become more problematic ...
Jamieson, E.; McLellan, B.; Van Riessen, Arie; Nikraz, H. (2015)It has been shown that silicate-derived geopolymers can be manufactured with lower greenhouse gas emissions than can Ordinary Portland Cement (OPC). This is assuming that transport methods and distances are equal. In this ...
Sipos, Gabriella (2001)Sodium oxalate is one of the many organics present in Bayer liquor. Due to its limited solubility, sodium oxalate can co-precipitate with alumina trihydrate during precipitation. This can have detrimental effects on the ...