Determination of the optimum conditions for dissolution of magnesite with H2SO4 solutions

ABALI Y., Çopur M., Yavuz M.

Indian Journal of Chemical Technology, vol.13, no.4, pp.391-397, 2006 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 4
  • Publication Date: 2006
  • Journal Name: Indian Journal of Chemical Technology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.391-397
  • Keywords: Magnesite, Optimisation, Sulphuric acid, Taguchi method
  • Manisa Celal Bayar University Affiliated: Yes

Abstract

Basic data on leaching of magnesite (MgCO3) with sulphuric acid are of interest from the point of view of the industrial process for obtaining pure MgSO4. The Taguchi method was used to determine the optimum conditions for the dissolution of magnesite in H2SO4 solutions. The experiments were performed within the ranges mentioned herein i.e. 20-65°C for reaction temperature, 0.5/100-10/100 g/mL for solid-to-liquid ratio, 0.2-5 M for acid concentration, 5-60 min for reaction time and 150-750 rpm for stirring speed. The optimum conditions for these factors were found to be 65°C, 5/100 g/mL, 2 M, 60 min and 300 rpm, respectively. Under these conditions, the dissolution mass fraction of MgCO 3 in H2SO4 solutions were w = 96.32%.