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Rotary Kiln Calcined Bauxite Application

Refractory applications remain the premiere non-metal market for calcined Bauxite which is mixed with binders and pressed, extruded, cast and shaped into a variety of forms that are then dried and transfered to kilns for firing. The calcined refractory grade bauxite is also used in unfired monolithic refractories.It should be noted that another source of materials suitable for refractory use is the calcined bauxite used to produce brown fused alumina, which has higher mechanical and chemical corrosion resistance than other high alumina refractory raw materials.

Item RKCB 80 RKCB 85 RKCB 86 RKCB 87 RKCB 89 RKCB 90
Al2O3(%) 80.0min 85.0min 86.0min 87.0min 89.0min 90.0min
SiO2(%) 14.0max 9.0max 8.0max 7.0max 5.0max 4.0max
Fe2O3(%) 2.0max 2.0max 2.0max 1.8max 1.8max 1.5max
TiO2(%) 4.0max 4.0max 4.0max 3.5max 3.5max 3.0max
CaO+MgO 0.60max 0.40max 0.40max 0.40max 0.40max 0.40max
K2O+Na2O 0.35max 0.35max 0.35max 0.35max 0.35max 0.35max
B.D(gm/cc) 3.00min 3.10min 3.20min 3.25min 3.25min 3.40max