Heat effects in the reaction of sulfuric acid with ilmenites influenced by initial temperature and acid concentration

• Autorzy: Jabłoński Maciej , Lubkowski Krzysztof , Tylutka Sandra , Ściążko Andrzej

Identyfikatory

DOI

10.2478/pjct-2021-0028

• Języki publikacji: EN

Abstrakty

EN

The influence of temperature and sulfuric acid concentration on the enthalpy and the rate of heat release during the reaction of Norwegian and Australian ilmenites with sulfuric acid was determined. The experimental results obtained from calorimetric measurements were compared with theoretical calculations based on the oxide composition and the phase composition of the raw material. Experimentally determined heat of reaction for Norwegian ilmenite (900–940 kJ/kg) and Australian ilmenite (800–840 kJ/kg) showed good agreement with theoretical calculations based on the phase composition of the raw material. It was found that the enthalpy of ilmenites decomposition reaction does not depend on the concentration of sulfuric acid in the concentration range from 83% to 93%. It was also demonstrated that the temperature and concentration of sulfuric acid have a significant impact on the thermokinetics of the decomposition process, increasing the value of the average rate of temperature change.

Słowa kluczowe

EN

ilmenites digestion; sulfuric acid; enthalpy of reaction

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2021
• Tom: Vol. 23, nr 3
• Strony: 37--42
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Jabłoński Maciej

• West Pomeranian University of Technology Szczecin, Faculty of Chemical Technology and Engineering, Department of Organic and Physical Chemistry, Al. Piastów 42, 71-065 Szczecin, Poland

autor

Lubkowski Krzysztof

• West Pomeranian University of Technology Szczecin, Faculty of Chemical Technology and Engineering, Department of Organic and Physical Chemistry, Al. Piastów 42, 71-065 Szczecin, Poland

autor

Tylutka Sandra

• West Pomeranian University of Technology Szczecin, Faculty of Chemical Technology and Engineering, Department of Organic and Physical Chemistry, Al. Piastów 42, 71-065 Szczecin, Poland

autor

Ściążko Andrzej

• Grupa Azoty Zakłady Chemiczne “Police” S.A., Kuźnicka 1, 72-010 Police

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).