LEACHING OF MERSIN/AYDINCIK DOLOMITE ORE IN HYDROCHLORIC ACID. DISSOLUTION RATES

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ALTINER M., YILDIRIM M., YILMAZ T.

PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING, vol.52, no.2, pp.536-550, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 2
  • Publication Date: 2016
  • Doi Number: 10.5277/ppmp160202
  • Journal Name: PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.536-550
  • Keywords: dolomite leaching, CO2 storage, fractional life method, PARTIAL DECOMPOSITION, KINETICS, ATMOSPHERE, ARAGONITE, PRODUCTS, CO2
  • Çukurova University Affiliated: Yes

Abstract

In this paper dissolution of dolomite ore, collected from Mersin/Aydincik in Turkey, was investigated at various experimental conditions in the presence of HCl acid. Particle size, acid/dolomite ratio, solid/liquid ratio, stirring speed, reaction time and temperature were also conducted to the determin the optimum experimental conditions. During the experiment, CO2 amount released from the dolomite was measured through the experimental apparatus so as to the determination of reaction orders and rate constants of the sample at the different temperatures by using the fractional life approach method. It was found that, reaction orders and rate constants, based on temperatures, changed from 1.505 to 1.339 and between 3.17 and 10.49 10(-2) mol dm(-3) sec(-1) respectively. In addition, differences in reaction rate constants were examined with Arrhenius equation and the activation energy of the dissolution process was calculated as 16.69 kJ mol(-1), which was consistent with the activation energies determined in literature.