Symposium on Light Metals / TMS 140th Annual Meeting and Exhibition, California, United States Of America, 27 February - 03 March 2011, pp.215-217
bauxite with caustic liquor and the subsequent precipitation of hydrated alumina . Most bauxite contains organic compounds in various amounts. Depending upon the digestion conditions, 5-10% of the organic carbon is converted to sodiumoxalate . When sodiumoxalate, if not controlled in Bayer process, builds up to a certain level of supersaturation, it precipitates out in the hydrate precipitator tank. This co-precipitation affects the quality of alumina .