Kinetic study on the leaching of calcined magnesite in gluconic acid solutions

Bayrak B., Lacin O., Sarac H.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, vol.16, no.3, pp.479-484, 2010 (SCI-Expanded) identifier identifier


A kinetic study on the leaching of calcined magnesite in aqueous gluconic acid solutions was investigated in batch reactor employing the parameters of particle size, temperature, stirring speed, solid-liquid ratio and acid concentration. A mathematical model was evaluated for the rate increased with decreasing particle size and increasing temperature and initially, the leaching in terms of acid concentration and then fell with increasing concentration. It was found in the study that stirring speed was not effective on leaching rate. The leaching rate decreases as solid-liquid ratio increases. It was shown that the mathematical model for calcined magnesite particle was: