Lee, MS Lee, KJ Oh, YJ 2024-01-21T07:09:04Z 2024-01-21T07:09:04Z 2021-09-02 2004-05 1345-9678 https://pubs.kist.re.kr/handle/201004/137647 In order to simulate the leaching of zinc calcine by sulfuric acid solutions, we prepared synthetic solutions with the composition ZnSO4-Fe-2(SO4)(3)-NaZSO(4)-H2SO4-NaOH-H2O and measured the solution pH at various temperatures. The effect of temperature on the ionic equilibria of these solutions was analyzed by considering chemical equilibria, mass balance and charge balance equations. The activity coefficients of solutes and the activity of water were calculated by using the Pitzer equation. The mole fractions of iron species were greatly affected by the solution temperature and the concentration of Fe-2(SO4)(3). In the experimental ranges of ionic strength of solution up to 9 m, the pH values calculated in this study agreed well with those measured. English JAPAN INST METALS AQUEOUS-SOLUTIONS ELECTROLYTES SYSTEMS Effect of temperature on equilibria in synthetic sulfuric acid leaching solution of zinc calcine Article 10.2320/matertrans.45.1748 1 MATERIALS TRANSACTIONS, v.45, no.5, pp.1748 - 1753 MATERIALS TRANSACTIONS 45 5 1748 1753 scie scopus 000221863900061 2-s2.0-3342975470 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article; Proceedings Paper AQUEOUS-SOLUTIONS ELECTROLYTES SYSTEMS zinc calcine leaching sulfuric acid ionic equilibria Pitzer temperature