Studying the Chemical and Energy Engineering Process of the Strengthening Calcination of Phosphorite Pellets Containing Free Carbon

  • V. I. BobkovEmail author
  • A. S. Fedulov
  • M. I. Dli
  • V. P. Meshalkin


The chemical and energy engineering processes of sintering and calcination, which are of practical importance in the chemical and energy engineering system of the thermal treatment of phosphorite pellets containing free carbon, have been studied. They are thermally activated processes that occur in phosphate raw materials during heating. Some results of thermogravimetric, thermomechanical, structural, and microray analyses have been presented. The multifactor dependence of the sintering and calcination of coke-containing phosphorite pellets has been revealed. The dependence of the strength of phosphorite pellets and the degree of coke burnup on the temperature and the coke content in different heating regimes and the change in the weight and relative expansion of the material of pellets in oxidative and neutral media depending on the coke content and the heating rate have been established.


chemical engineering combustion sintering kinetics temperature phosphorite pellet dissociation of carbonates coke 


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  1. 1.
    Leont’ev, L.I., Physicochemical characteristics of the integrated processing of iron-bearing ores and technogenic wastes, XX Mendeleevskii s"ezd po obshchei i prikladnoi khimii. Tezisy dokladov v 5 tomakh (XX Mendeleev Congress on General and Applied Chemistry: Abstracts of Papers, 5 vols.), Yekaterinburg: Ural. Otd., Ross. Akad. Nauk, 2016, p. 92.Google Scholar
  2. 2.
    Rudobashta, S.P., Calculation of the kinetics of drying disperse materials on the basis of analytical methods, J. Eng. Phys. Thermophys., 2010, vol. 83, no. 4, pp. 753–763. Scholar
  3. 3.
    Meshalkin, V.P., Bobkov, V.I., Dli, M.I., and Khodchenko, S.M., Computer-aided modeling of the chemical process of drying of a moving dense multilayer mass of phosphorite pellets, Dokl. Chem., 2017, vol. 475, no. 2, pp. 188–191. Scholar
  4. 4.
    Bobkov, V.I., Borisov, V.V., Dli, M.I., and Meshalkin, V.P., Modeling the calcination of phosphorite pellets in a dense bed, Theor. Found. Chem. Eng., 2015, vol. 49, no. 2, pp. 176–182. Scholar
  5. 5.
    Bobkov, V.I., Borisov, V.V., Dli, M.I., and Meshalkin, V.P., Multicriterial optimization of the energy efficiency of the thermal preparation of raw materials, Theor. Found. Chem. Eng., 2015, vol. 49, no. 6, pp. 842–846. Scholar
  6. 6.
    Geguzin, Ya.E., Fizika spekaniya (Physics of Sintering), Moscow: Nauka, 1984.Google Scholar
  7. 7.
    Shumakov, N.S. and Kunaev, A.M., Aglomeratsiya fosforitov (Agglomeration of Phosphorites), Alma-Ata: Nauka, 1982.Google Scholar
  8. 8.
    Bogatyrev, A.F. and Panchenko, S.V., Matematicheskie modeli v teplotekhnologii fosfora (Mathematical Models in the Heat Technology of Phosphorus), Moscow: Mosk. Energ. Inst., 1996.Google Scholar
  9. 9.
    Andrievskii, R.A., Poroshkovoe materialovedenie (Powdered Materials Science), Moscow: Metallurgiya, 1991.Google Scholar
  10. 10.
    Luis, P. and Van der Bruggen, B., Exergy analysis of energy-intensive production processes: Advancing towards a sustainable chemical industry, J. Chem. Technol. Biotechnol., 2014, vol. 89, no. 9, pp. 1288–1303. Scholar
  11. 11.
    Elgharbi, S., Horchani-Naifer, K., and Férid, M., Investigation of the structural and mineralogical changes of Tunisian phosphorite during calcinations, J. Therm. Anal. Calorim., 2015, vol. 119, no. 1, pp. 265–271. Scholar
  12. 12.
    Bobkov, V.I., Modeling of thermally activated chemical processes of the calcination of phosphorite pellets in the dense bed of a conveyor-type calcining plant, Khim. Prom-st. Segodnya, 2017, no. 2, pp. 50–56.Google Scholar
  13. 13.
    Panchenko, S.V., Automated analysis of the energysaving potential in a thermal engineering system for phosphorus production, Theor. Found. Chem. Eng., 2004, vol. 38, no. 5, pp. 538–544. Scholar
  14. 14.
    Bobkov, V.I., Borisov, V.V., Dli, M.I., and Meshalkin, V.P., Intensive technologies for drying a lump material in a dense bed, Theor. Found. Chem. Eng., 2017, vol. 51, no. 1, pp. 70–75. Scholar
  15. 15.
    Panchenko, S.V. and Shirokikh, T.V., Thermophysical processes in the burden zone of submerged arc furnaces, Theor. Found. Chem. Eng., 2014, vol. 48, no. 1, pp. 77–81. Scholar
  16. 16.
    Malyshev, V.L., Models of mass transfer in capillary-porous solids with variable porosity during thermal treatment, Theor. Found. Chem. Eng., 2010, vol. 44, no. 2, pp. 169–171. Scholar
  17. 17.
    Talkhaev, M.P., Borisova, L.I., Sukharnikov, Yu.I., and Gal’perina, S.Ya., Proizvodstvo fosforitovykh okatyshei (Production of Phosphorite Pellets), Alma-Ata: Nauka, 1989.Google Scholar
  18. 18.
    Kelbaliyev, G.I., Samedli, V.M., and Samedov, M.M., Modeling the granulation of powdered materials by rolling, Theor. Found. Chem. Eng., 2011, vol. 45, no. 5, p. 660. Scholar
  19. 19.
    Sazhin, B.S., Sazhin, V.B., Otrubjannikov, E.V., and Kochetov, L.M., Drying in active hydrodynamic regimes, Theor. Found. Chem. Eng., 2008, vol. 42, no. 6, pp. 837–851. Scholar

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© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • V. I. Bobkov
    • 1
    Email author
  • A. S. Fedulov
    • 1
  • M. I. Dli
    • 1
  • V. P. Meshalkin
    • 2
  1. 1.Moscow Power Engineering Institute (Technical University), Smolensk BranchSmolenskRussia
  2. 2.Mendeleev University of Chemical Technology of RussiaMoscowRussia

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