Dissolution kinetics of natural magnesite in lactic acid solutions

Bakan F., Lacin O., Bayrak B., Sarac H.

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, cilt.80, sa.1, ss.27-34, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 80 Sayı: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.minpro.2006.01.005
  • Dergi Adı: INTERNATIONAL JOURNAL OF MINERAL PROCESSING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.27-34
  • Anahtar Kelimeler: magnesite, lactic acid, chemical dissolution, kinetics
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this study, the dissolution of magnesite particles in aqueous lactic acid solutions was investigated in a batch reactor employing the parameters of stirring speed, particle size, temperature and acid concentration. The shrinking core model was evaluated to determine the effect of particle size, temperature and concentration. It was also found that the stirring speed did not change the dissolution. Consequently, it was determined that the dissolution rate is controlled by surface chemical reaction. The activation energy of the process was determined to be 50.3 U mol(-1). (c) 2006 Elsevier B.V. All rights reserved.