GBT Bauxite is unique and different from usual Guinea bauxite as these are embedded in the silica rich fines at the periphery of hillocks. It is well established that bauxite can be beneficiated by simple crushing and screening method. The XRF, quantitative mineralogy and bomb digestion tests showed that this is one of the best quality metallurgical grade bauxite for low temperature alumina refinery. Beneficiated lumpy bauxite has fairly high available alumina (44-66% in average) and low reactive silica 1.2 to 1.4 with less than 1% boehmite.
A Typical Chemical and Mineralogical Analysis of GBT Dry Beneficiated Bauxite