AbstractAbout AuthorsReferences
The design and working process of a new electric drum furnace for heat treatment of vermiculite concentrates and conglomerates, as well as other bulk porous materials based on a silicate binder, are considered. The electric drum furnace is devoid of the disadvantages inherent in its predecessors – furnaces with a movable hearth platform: there are no oscillating elements, dynamic effects do not occur, and there is also no resonant mode of operation, since the working drums perform rotational motion with a constant angular velocity. Using the example of a six-drum furnace, the volumes of processed material located in the firing spaces are calculated, and the second and hourly productivity of the furnace (10 m3/h or 0.0029 m3/s) are determined. The temperature of the heating elements (1167 K) was calculated, the electric power of the furnace (95.2 kW) and the specific energy intensity of the firing process of vermiculite concentrate, with a dimension of 4 mm (0.004 m) from the raw materials of the Kovdorsky deposit – 44.2 MJ/m3, which makes the furnaces of the new design competitively capable, were determined.
A.I. NIZHEGORODOV, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
Irkutsk National Research Technical University (83, Lermontov Street, Irkutsk, 664074, Russian Federation)
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2. Nizhegorodov A.I. Some aspects of the technology for preparing and firing vermiculite concentrates in electric furnaces. Stroitel’nye Materialy: technology [Construction materials: technology]. 2007. No. 11, pp. 16–17. (In Russian).
3. Nizhegorodov A.I. Electrical roasting system with vibrational batch supply. Russian Engineering Research. 2017. Vol. 37. No. 3, pp. 180–184.
4. Nizhegorodov A.I., Bryanskikh T.B., Gavrilin A.N. and others. Testing a new alternative electric furnace for firing vermiculite concentrates. Izvestiya of Tomsk Polytechnic University. Georesources Engineering. 2018. Vol. 329. No. 4, pp. 142–150. (In Russian).
5. Nizhegorodov A.I., Gavrilin A.N., Moizes B.B. Development of bulk lightweight spherosilicate material technology based on sublimation of expanded polystyrene granules. Refractories and industrial ceramics. 2020. Vol. 60. No. 1, pp. 475–481.
6. Rybyev I.A. Stroitel’noye materialovedeniye: ucheb. posobiye dlya stroitel’nykh spetsial’nostey vuzov. [Construction materials science: textbook. Manual for construction specialties of universities]. Moscow Vysshaya shkola. 2003. 701 p.
7. Kremenetskaya I.P., Belyaevsky A.T., Vasilyeva T.N. Amorphization of serpentine minerals in the technology of producing magnesia-silicate reagent for the immobilization of heavy metals. Khimiya v interesakh ustoychivogo razvitiya. 2010. No. 18, pp. 41–49. (In Russian).
8. Patent No. RU 182943. IPC F27B9/06. Electric drum furnace / A.I. Nizhegorodov. Applicant and patent holder Federal State Budgetary Educational Institution of Higher Education “Irkutsk National Research Technical University” No. 2019130471. Application 09.27.2019. Published 01.16.2020. Bull. No. 2. (In Russian).
9. Nizhegorodov A.I. Experimental determination of friction coefficients of some potentially thermoactive minerals. Stroitel’nye Materialy [Construction Materials]. 2016. No. 11, pp. 63–67. (In Russian).
10. Bryanskikh T.B., Kokourov D.V. Energy efficiency of electric furnaces with a moving hearth when firing vermiculite concentrates of various size groups. Novye ogneupory. 2017. No. 8, pp. 16–21. (In Russian).
11. Nizhegorodov A.I., Zvezdin A.V. Energotekhnologicheskiye agregaty dlya pererabotki vermikulitovykh kontsentratov [Energy technology units for processing vermiculite concentrates]. Irkutsk: Publishing house IRNTU. 2015. 250 p.
12. Patent RU 192841 U1 Electric furnace for producing expanded vermiculite / Nizhegorodov A.I. Applicant and patent holder Federal State Budgetary Educational Institution of Higher Education “Irkutsk National Research Technical University”. No. 2019121160; Application 07.08.2019. Published 02.10.2019. Bull. No. 28.
13. Kutateladze S.S. Teploperedacha i gidrodinamicheskoye soprotivleniye: spravochnoye posobiye [Heat transfer and hydrodynamic resistance: a reference guide]. Moscow: Energoatomizdat. 1990. 367 p.
14. Nizhegorodov A.I., Bryanskikh T.B., Zvezdin A.V. Modeling the process of transferring radiant energy to a moving vermiculite mass in an electric furnace with a vibrating hearth. Novye ogneupory. 2019. No. 7, pp. 23–27. (In Russian).
15. Zedgenizov V.G., Nizhegorodov A.I. Efficiency of using multi-module modifications of electric furnaces for firing vermiculite. Stroitel’nye Materialy [Construction Materials]. 2009. No. 12, pp. 51–53. (In Russian).
16. Yavorsky B.M., Detlaf A.A. [Handbook of physics for engineers and university students]. Moscow: Nauka. 1968. 940 p.
2. Nizhegorodov A.I. Some aspects of the technology for preparing and firing vermiculite concentrates in electric furnaces. Stroitel’nye Materialy: technology [Construction materials: technology]. 2007. No. 11, pp. 16–17. (In Russian).
3. Nizhegorodov A.I. Electrical roasting system with vibrational batch supply. Russian Engineering Research. 2017. Vol. 37. No. 3, pp. 180–184.
4. Nizhegorodov A.I., Bryanskikh T.B., Gavrilin A.N. and others. Testing a new alternative electric furnace for firing vermiculite concentrates. Izvestiya of Tomsk Polytechnic University. Georesources Engineering. 2018. Vol. 329. No. 4, pp. 142–150. (In Russian).
5. Nizhegorodov A.I., Gavrilin A.N., Moizes B.B. Development of bulk lightweight spherosilicate material technology based on sublimation of expanded polystyrene granules. Refractories and industrial ceramics. 2020. Vol. 60. No. 1, pp. 475–481.
6. Rybyev I.A. Stroitel’noye materialovedeniye: ucheb. posobiye dlya stroitel’nykh spetsial’nostey vuzov. [Construction materials science: textbook. Manual for construction specialties of universities]. Moscow Vysshaya shkola. 2003. 701 p.
7. Kremenetskaya I.P., Belyaevsky A.T., Vasilyeva T.N. Amorphization of serpentine minerals in the technology of producing magnesia-silicate reagent for the immobilization of heavy metals. Khimiya v interesakh ustoychivogo razvitiya. 2010. No. 18, pp. 41–49. (In Russian).
8. Patent No. RU 182943. IPC F27B9/06. Electric drum furnace / A.I. Nizhegorodov. Applicant and patent holder Federal State Budgetary Educational Institution of Higher Education “Irkutsk National Research Technical University” No. 2019130471. Application 09.27.2019. Published 01.16.2020. Bull. No. 2. (In Russian).
9. Nizhegorodov A.I. Experimental determination of friction coefficients of some potentially thermoactive minerals. Stroitel’nye Materialy [Construction Materials]. 2016. No. 11, pp. 63–67. (In Russian).
10. Bryanskikh T.B., Kokourov D.V. Energy efficiency of electric furnaces with a moving hearth when firing vermiculite concentrates of various size groups. Novye ogneupory. 2017. No. 8, pp. 16–21. (In Russian).
11. Nizhegorodov A.I., Zvezdin A.V. Energotekhnologicheskiye agregaty dlya pererabotki vermikulitovykh kontsentratov [Energy technology units for processing vermiculite concentrates]. Irkutsk: Publishing house IRNTU. 2015. 250 p.
12. Patent RU 192841 U1 Electric furnace for producing expanded vermiculite / Nizhegorodov A.I. Applicant and patent holder Federal State Budgetary Educational Institution of Higher Education “Irkutsk National Research Technical University”. No. 2019121160; Application 07.08.2019. Published 02.10.2019. Bull. No. 28.
13. Kutateladze S.S. Teploperedacha i gidrodinamicheskoye soprotivleniye: spravochnoye posobiye [Heat transfer and hydrodynamic resistance: a reference guide]. Moscow: Energoatomizdat. 1990. 367 p.
14. Nizhegorodov A.I., Bryanskikh T.B., Zvezdin A.V. Modeling the process of transferring radiant energy to a moving vermiculite mass in an electric furnace with a vibrating hearth. Novye ogneupory. 2019. No. 7, pp. 23–27. (In Russian).
15. Zedgenizov V.G., Nizhegorodov A.I. Efficiency of using multi-module modifications of electric furnaces for firing vermiculite. Stroitel’nye Materialy [Construction Materials]. 2009. No. 12, pp. 51–53. (In Russian).
16. Yavorsky B.M., Detlaf A.A. [Handbook of physics for engineers and university students]. Moscow: Nauka. 1968. 940 p.
For citation: Nizhegorodov A.I. Energy-technology indicators of a multi-drum electric furnace for firing vermiculite concentrates. Stroitel'nye Materialy [Construction Materials]. 2024. No. 3, pp. 56–63. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2024-822-3-56-63