Leaching Behavior of Lithium-Bearing Bauxite with High-Temperature Bayer Digestion Process in K2O-Al2O3-H2O System

Lithium is one of the secondary mineral elements occurring in bauxite. The behavior lithium-bearing bauxite digestion process was investigated, and effect conditions on extraction rates lithium studied. results demonstrate that mass ratio added CaO to bauxite, KOH concentration, temperature had a significant efficiency. An L9(34) orthogonal experiment demonstrated order each factor for from primary lime dosage, caustic reaction temperature. Under optimal (t = 60 min, T 260 °C, ρ(K2O) 280 g/L, 16% dosage), leaching efficiencies alumina are 85.6% 80.09%, respectively, with about 15% entering into red mud. findings this study maybe useful controlling content products recovery Bayer process.