Kinetics of the Leaching Process of an Australian Gibbsitic Bauxite by Hydrochloric Acid

Table 2

Effect of leaching time and leaching temperature on extraction of Al₂O₃ and Fe₂O₃.

Leaching temperature/°C	Leaching time/min	Fraction of Al2O3 extracted/%	Fraction of Fe2O3 extracted/%
80	30	34.55	78.87
80	60	43.88	79.92
80	90	47.34	90.34
80	120	54.43	93.93
90	30	49.73	75.43
90	90	52.79	94.42
90	120	75.26	92.23