Kinetic Analysis of Aluminum Extraction from Ethiopian Kaolinite Using Hydrochloric Acid

Figure 6

FTIR curves of (a) kaolinite, (b) metakaolinite at 700°C for 180 min, and (c) residue after leaching at 0.10 g·mL⁻¹, 5 M, 80°C, and 180 min.