Bauxite is found worldwide in abundance. In the world, the eight major countries known for Bauxite production are Australia, China, Brazil, India, Guinea, Jamaica, Russia and Kazakhstan. In India, the major regions for Bauxite mining are the hilly and plateau regions of Odisha, Madhya Pradesh, Jharkhand, Chhattisgarh, Maharashtra, and Gujarat.
|1||Gibbsite||Al2O3.3H2O or Al (OH)3||It has weak hydroxide bondage, so water evaporates at lowest temperature level of around 143 to 150℃ obtaining alumina.|
|2||Boehmite||Al2O3.H2O||It has one water molecule attached to alumina with strong bond and so water evaporates at more than 240℃ compared to gibbsite.|
|3||Diaspore||α-AlO(OH)||It has more dense chemical structure and needs more than 260℃ to break the bond of water and Al2O3. Thus, gibbsite’s unique property places its demand compared to the other two bauxite ores.|