Abstract
The chemical technology processes that are of practical importance in the chemical technology system for thermal treatment of raw materials such as drying, coke combustion, decarbonization of phosphorites, melting of batch particles, formation of agglomerated cake, and moisture vapor condensation in lower beds were studied. These processes are thermally activated and proceed during agglomeration in the phosphate raw material. The results of the experimental studies of the sintering kinetics of the phosphate raw materials were presented. A multifactor dependence was revealed in the agglomeration processes under study. Increased resistance to the movement of the heat carrier gas was observed in the melting and fit agglomerate zones, which led to a decrease in the rate of filtration of the heat carrier gas through the bed and worsened the conditions of the chemical technology processes.
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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. https://doi.org/10.1134/S0040579515020025
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. https://doi.org/10.1134/S0040579515060020
Skorokhod, V.V., Reologicheskie osnovy teorii spekaniya (Rheological Fundamentals of the Theory of Sintering), Kiev: Naukova Dumka, 1972.
Geguzin, Ya.E., Fizika spekaniya (Physics of Sintering), Moscow: Nauka, 1984.
Shumakov, N.S. and Kunaev, A.M., Aglomeratsiya fosforitov (Agglomeration of Phosphorites), Alma-Ata: Nauka, 1982.
Andrievskii, R.A., Poroshkovoe materialovedenie (Powdered Materials Science), Moscow: Metallurgiya, 1991.
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. https://doi.org/10.1002/jctb.4422
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. https://doi.org/10.1007/s10973-014-4132-5
Bobkov, V.I., Study of processes in conveyor-type calcining plants, Elektrometallurgiya, 2015, no. 12, p.2.
Panchenko, S.V., Automated analysis of the energy-saving potential in a thermal engineering system for phosphorus production, Theor. Found. Chem. Eng., 2004, vol. 38, no. 5, pp. 538–544. https://doi.org/10.1023/B:TFCE. 0000043807.10514.5a
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. https://doi.org/10.1134/ S0040579517010031
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. https://doi.org/10.1134/S0040579514010096
Malyshev, V.L., Models of mass transfer in capillaryporous solids with variable porosity during thermal treatment, Theor. Found. Chem. Eng., 2010, vol. 44, no. 2, pp. 169–171. https://doi.org/10.1134/S0040579510020077
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.
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. https://doi.org/10.1134/S0040579511040051
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. https://doi.org/10.1134/S0040579508060067
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Original Russian Text © V.I. Bobkov, V.V. Borisov, M.I. Dli, V.P. Meshalkin, 2018, published in Teoreticheskie Osnovy Khimicheskoi Tekhnologii, 2018, Vol. 52, No. 1, pp. 38–44.
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Bobkov, V.I., Borisov, V.V., Dli, M.I. et al. Thermally Activated Chemical Technology Processes of Agglomeration of Phosphorites. Theor Found Chem Eng 52, 35–41 (2018). https://doi.org/10.1134/S0040579518010025
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DOI: https://doi.org/10.1134/S0040579518010025