Merit, Suarl
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One of the interesting features of Guinea bauxite, particularly in Boke bauxite belt is fairly low silica content and this does not increase with lowering of alumina content. About 50% of total silica is in the form of reactive silica and about 1.2 to 1.8% reactive silica, in average, makes them ideal for processing in the low temperature alumina refinery. Alumina content varies from medium (40%) to as high as 52% in the lateritic bauxite deposits and in average 46% alumina (about 42% available alumina) can be exported from these deposits. Lateritic bauxite is mainly gibbsitic in nature with less than 2% boehmite, with concentration mostly at the upper level of laterite profile. Bauxite deposits, occurring near the coastal belt of Guinea sometimes have relicts Andalusite and Pyrophyllite minerals, which reduces the available alumina content in the ore.Bauxite is characterized by fairly low silica content (about 2.5% SiO2- only half is reactive) and medium to high alumina (46-48%).Boke Bauxite is primarily gibbisitc in nature with less than 3% boehmite and there are low level of impurities including organic content.Bauxite are easy to mine in Guinea and does not require any dry or wet beneficiation process thanks to natural low silica content in the ore.moisture to 6.7% for shipping.Sent from my iPad
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