Mathematical Models for an Energy Intensive Multistage Roasting Process of Pelletized Industrial Waste from Apatite-Nepheline Ores

Abstract:

In this article, we describe mathematical and computer models for the complex, energy-consuming, multistage, integrated chemical and power engineering processes of calcination and sintering of pelletized industrial waste from apatite-nepheline ores, accumulated in the dumps of mining and processing plants. The models take into account the negative effect of vitrification and the subsequent destruction of pellets in case the operating temperature condition in the high-temperature roasting zone of indurating conveyor furnaces is violated during the implementation of these thermally activated processes. Experimental and analytical methods have been developed for the analysis of integrated, thermally activated processes in a dense multilayer mass of pellets obtained from apatite-nepheline ores waste, taking place in indurating furnaces. The possibility of complex phenomena accounting for polymorphic transformations, chemical reactions in solid phases, reactions involving a liquid phase, as well as the formation of new phases and solid solutions as a result of reactions, must be considered when modeling these processes. This analysis makes it possible to increase the strength of pellets during sintering and the degree of calcination as a result of carbonates dissociation, as well as to detect and use the potential of increasing energy and resource efficiency in a complex, environmentally safe, chemical and power engineering system for the processing of industrial waste of apatite-nepheline ores from dumps of mining and industrial plants.

• Periodical: Materials Science Forum (Volume 1052)
• Pages: 473-481
• DOI: https://doi.org/10.4028/p-0i5ger
• Online since: February 2022
• Authors: Vladimir I. Bobkov, Margarita V. Chernovalova*, Andrey M. Sokolov
• Keywords: Carbonates Dissociation, Energy Efficiency Optimization, Roasting Process

References

[1] V.M Abzalov, V.V. Bragin, V.I. Klein, S.N. Evstyugin, A.A. Solodukhin, Thermal systems of conveyer roasting machines, Steel Trans. 40 (2010) 813-815.

DOI: 10.3103/s0967091210090081

[2] L. Aichmayer, J. Garrido, W. Wang, B. Laumert, Experimental evaluation of a novel solar receiver for a micro gas-turbine based solar dish system in the KTH high-flux solar simulator, Energy. 159 (2018) 184-195.

DOI: 10.1016/j.energy.2018.06.120

[3] C.E. Blank, R.W. Parks, N.W. Hinman, Chitin: a potential new alternative nitrogen source for the tertiary, algal-based treatment of pulp and paper mill wastewater, J. Appl. Phycol. 28 (2016) 2753-2766.

DOI: 10.1007/s10811-016-0808-5

[4] V.I. Bobkov, V.V. Borisov, M.I. Dli, V.P. Meshalkin, Multicriterial optimization of the energy efficiency of the thermal preparation of raw materials, Theor. Found. Chem. Eng. 49 (2015) 842-846.

DOI: 10.1134/s0040579515060020

[5] V.I. Bobkov, V.V. Borisov, M.I. Dli, V.P. Meshalkin, Modeling the calcination of phosphorite pellets in a dense bed, Theor. Found. Chem. Eng. 49 (2015) 176-182.

DOI: 10.1134/s0040579515020025

[6] V.I. Bobkov, V.V. Borisov, M.I. Dli, V.P. Meshalkin, Intensive Technologies for drying a lump material in a dense bed, Theor. Found. Chem. Eng. 51 (2017) 70-75.

DOI: 10.1134/s0040579517010031

[7] V.I. Bobkov, A.S. Fedulov, M.I. Dli, V.P. Meshalkin, E.V. Morgunova, Scientific basis of effective energy resource use and environmentally safe processing of phosphorus-containing manufacturing waste of ore-dressing barrows and processing enterprises, Clean Techn. Environ. Policy. 20 (2018) 2209-2221.

DOI: 10.1007/s10098-018-1633-0

[8] K.M. Brooke, L.A. Baker, T.H. Boyer, Total value of phosphorus recovery, Environ. Sci. Tech. 50 (2016) 6606-6620.

[9] D. Obychaiko, V. Shikhin, Development of an algorithm to maintain the performance of the cyberphysical system by introducing an updated indicator of operational reliability, Journal of Applied Informatics.13, 6 (78) (2018) 60-70.

[10] A. Madera, P. Kandalov Computer simulation of temperature fields in technical systems under interval stochastic uncertain parameters, Journal of Applied Informatics. 10, 1 (55) (2015) 106-113.

[11] A.A. Butkarev, A.P. Butkarev, P.A. Zhomiruk, V.V. Martynenko, N.V. Grinenko, Pellet heating on modernized OK-124 roasting machine, Steel Trans. 40 (2010) 239-242.

DOI: 10.3103/s0967091210030101

[12] R.M. Bustillo, Mineral Resources: From Exploration to Sustainability Assessment, Springer Nature, Cham, Switzerland, (2018).

[13] A.A. Butkarev, A.P. Butkarev, Reversible pellet-cooling system at roasting machines, Steel Trans. 35 (2005) 1-3.

[14] G.L. Chang, J.J. Pedro, H.G. Kim, Phosphorous recovery from sewage sludge using calcium silicate hydrates, Chemosphere.193 (2018) 1087-1093.

DOI: 10.1016/j.chemosphere.2017.11.129

[15] Y.P. Bykova, B.V. Ermolenko, Economic-mathematical models for designing a wastewater purification system for electroplating plants, Theor. Found. Chem. Eng. 45 (2011) 542-546.

DOI: 10.1134/s0040579510051069

[16] S.V. Panchenko, T.V. Shirokikh, Thermophysical processes in burden zone of submerged arc furnaces, Theor. Found. Chem. Eng. 48 (2014) 77-81.

DOI: 10.1134/s0040579514010096

[17] A.A. Palant, Pelletizing of sulfide molybdenite concentrates, Russian Metallurgy. 2 (2007) 109-111.

DOI: 10.1134/s0036029507020048

[18] A. Cernea, H. A. Frankowska, Connection Between the Maximum Principle and Dynamic Programming for Constrained Control Problems, SIAM J. Control Optim. 44(2) (2005) 673-703.

DOI: 10.1137/s0363012903430585

[19] S.P. Sethi, The Maximum Principle: Continuous Time. In: Optimal Control Theory. Springer, Cham, Switzerland, (2019).

[20] L.I. Leontyev, K.V. Grigorovich, M.V. Kostina, Fundamental research as a base of creating new materials and technologies in the fieild of metallurgy, Part 1, Institution News. Ferrous Metallurgy. 61(1) (2018) 11-22.

[21] V.P. Meshalkin, V.I. Bobkov, M.I. Dli, S.M. Khodchenko, Optimizing the energy efficiency of the chemical and energy engineering process of drying of a moving dense multilayer mass of phosphorite pellets, Doklady Chemistry. 477(2) (2017) 286-289.

DOI: 10.1134/s0012500817120059

[22] V.S. Shvydkii, Y.G. Yaroshenko, N.A. Spirin, V.V. Lavrov, Mathematical model of roasting process of ore and coal pellets in a indurating machine, Institution News. Ferrous Metallurgy. 60(4) (201) 329-335.

DOI: 10.17073/0368-0797-2017-4-329-335

[23] B.A. Bokovikov, V.V. Bragin, V.S. Shvydkii, Role of the thermal-inertia zone in conveyer roasting machines, Steel. 44(8) (2014) 595-601.

DOI: 10.3103/s096709121408004x