In the present work, results are given for a study of the reaction of petroleum coke and phosphogypsum (CaSO4) along with a description of the methods used. Stoichiometric mixtures of petroleum coke and phosphogypsum were prepared. The petroleum coke sample was first ground and then screened to give a fraction with particle diameter 0.25-0.315 mm followed by drying at 110°C. The phosphogypsum sample was also ground and screened to give an analogous fraction, which was then subjected to heat treatment at from 100 to 200°C until constant mass was obtained. Weighed mixtures were subjected to heat treatment at temperatures from 900 to 1000°C characteristic for carrying out one of the stages of the reaction of phosphogypsum with cokes, specifically, its decomposition to give calcium sulfide and carbon dioxide. Curves for the dependence of the rate and conversion of the starting materials on elapsed time were obtained at different reaction temperatures. The reaction rate constants were determined using these curves and the activation energy was calculated.
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 3, pp. 32–35, May–June, 2021.
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Suslikov, A.V., Zhirnov, B.S. & Murtazin, F.R. A Study of the Kinetics of the Reaction of Petroleum Coke with Phosphogypsum to Give Calcium Sulfide. Chem Technol Fuels Oils 57, 461–466 (2021). https://doi.org/10.1007/s10553-021-01266-3
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DOI: https://doi.org/10.1007/s10553-021-01266-3