Al2O3 75-88% Calcined Bauxite for Refractory Industry¹

Product Description Calcined bauxite is one of the principal ore of aluminum. Rotary kiln calcined bauxite is obtained by calcining superior grade bauxite at high temperature (from 850oC to 1600oC) in the rotary kiln. This removes moisture thereby increasing the alumina content. Compared to an alumina content of about 57% to 58% in raw bauxite, calcined bauxite has an alumina content of 84% to 88%.Besides, through calcination, the density and refractory resistance will also be improved to varying degrees. The grade of bauxite can be increased greatly.The calcined bauxite can be processed into bauxite sand and bauxite powder of different particle sizes, both of which can be directly used as refractory sand. It has a very high status in the field of refractory materials.Features and advantages of our Refractory grade calcined bauxite :1)low iron (Fe2O3) content ,less than 2.0%,2)2)big bulk density3) other impurity is very low,as we select raw material for one time and second time after discharge from furnace 4)efficient supplying capability5) competitive price and strict quality management Application of our refractory calcined bauxite:high alumina refractory bricks,corundum bricks, refractory castableSpecification of our hot seller Refractory grade CALCINED BAUXITE:  ItemAL2O3(%)FE2O3(%)TIO2(%)K2O+Na2O(%)CaO+MgO(%)Bulk density (g/cm3)YRD-80≥80≤2.5≤4.0≤0.6≤0.6≥2.8YRD-85≥85≤2≤4.0≤0.6≤0.6≥3.0YRD-86≥86≤2≤4.0≤0.6≤0.6≥3.1YRD-87≥87≤2≤4.0≤0.6≤0.6≥3.2YRD-88≥88≤1.8≤4.0≤0.6≤0.6≥3.25Packing of our refractory grade calcined bauxite:new and strong woven bags 50kg,1000kg,1250kg,1300kg,2000kg ,or upon customers' request Normal aggregate size of 0-1mm,1-3mm,3-5mm,5-8mm,0-10mm,5-10mm,0 -30mm, 5-30mm,powder bauxite material with 80mesh,100mesh,150mesh,200mesh,325mesh. Taking strict quality management ,our CALCINED BAUXITE pass inspection by SGS,BV ,AHK etc international inspection companies.

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