Heat effects in the reaction of sulfuric acid with ilmenites influenced by initial temperature and acid concentration-Reference-Cited by-同舟云学术

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

Published:2021-09-01 Issue:3 Volume:23 Page:37-42
ISSN:1899-4741
Container-title:Polish Journal of Chemical Technology
language:en
Short-container-title:

Author:

Jabłoński Maciej¹,Lubkowski Krzysztof¹,Tylutka Sandra¹,Ściążko Andrzej²

Affiliation:

1. 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

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

Abstract

Abstract 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.

Publisher

Walter de Gruyter GmbH

Subject

General Chemical Engineering,General Chemistry,Biotechnology

Link

https://www.sciendo.com/pdf/10.2478/pjct-2021-0028

Reference29 articles.

1. 1. Blakey, R.R. & Hall, J.E., Titanium Dioxide, in Pigment Handbook (P.A. Lewis, Ed.), Wiley, NY, 1987.

2. 2. Winkler, J. (2003). Titanium Dioxide, Vincentz Network, Hannover.

3. 3. Gázquez, M.J., Bolívar, J.P., García-Tenorio, R. & Vaca, F., (2009). Physicochemical characterization of raw materials and co-products from the titanium dioxide industry, J. Hazard. Mater., 166, 1429–1440. DOI: 10.1016/j.jhazmat.2008.12.067.

4. 4. Mantero, J., Gázquez, M.J., Bolívar, J.P., García-Tenorio, R. & Vaca, F. (2013). Radioactive characterization of the main materials involved in the titanium dioxide production process and their environmental radiological impact. J. Environ. Radio-act. 120, 26–32. DOI: 10.1016/j.jenvrad.2013.01.002.

5. 5. Han, G., Wen, S., Wang, H. & Feng, Q. (2020). Interaction mechanism of tannic acid with pyrite surfaces and its response to flotation separation of chalcopyrite from pyrite in a low-alkaline medium. J. Mater. Res. Technol., 9, 4421–4430. DOI: 10.1016/j.jmrt.2020.02.067.

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