Dissolution kinetics of magnesite mineral in water saturated by chlorine gas

In this study, the dissolution kinetics of magnesite mineral with Cl-2 gas in aqueous media were investigated. The effects of reaction temperature, pa rticle size, solid-to-liquid ratio, gas flow rate and stirring speed on the dissolution process were determined. It was observed that the dissolution of the magnesite mineral increased with increasing reaction temperature, ga s flow rate and stirring speed and with decreasing particle size and solid- to-liquid ratio. By analysis of the experimental data using heterogeneous k inetic models, it was determined that the dissolution process is controlled by resistance of the chemical surface reaction for range 12 degrees-40 deg rees C and film diffusion for range 40 degrees-70 degrees C. (C) 1999 Elsev ier Science B.V. All rights reserved.