Kinetic Analysis of Aluminum Extraction from Ethiopian Kaolinite Using Hydrochloric Acid

Table 4

The first-order reaction rate constant of surface chemical reaction at various reaction temperatures from 50 to 80°C.

Reaction temperature (°C)	50	60	70	80
First-order reaction rate constant (cm min^−1)	7.32 × 10^−5	1.04 × 10^−4	1.20 × 10^−4	1.70 × 10^−4