INFLUENCE OF THE QUANTITY OF THE ADDITIVE ON THE THERMAL CONDITION OF THE METAL BATH IN THE LADLE
DOI:
https://doi.org/10.34185/1991-7848.2025.01.12Keywords:
amount of additive material, thermal kondition of a liquid metal bathAbstract
The previous article presents the results of mathematical modeling and research using the developed models of the effect of the amount of lump additives introduced into a ladle bath (with a capacity of 250 t) during steel processing in a ladle furnace unit (LFU) on its hydrodynamic state. Using the example of using lump ferromanganese grade FMn78, taking into account different specific amounts of the additive (0,2; 1; 2; 3 kg/t), a significant effect of the studied factor on the hydrodynamics of the metal melt during the considered period (up to 4.5 s) of the ferroalloy additive being in the bath is shown. This work contains the results of a study of the effect of the additive amount on the thermal state of the metal melt under LFU processing conditions. The presented material is a logical continuation of previous studies, in which the initial conditions specified in the previous article are preserved. The work included two stages of research. At the first stage, the influence of the intensity of blowing of the metal bath in the ladle on its thermal state was estimated and experimentally assessed. An influence (from ≈0.08 ºС to ≈0.13 ºС depending on the intensity of blowing) on the thermal state of the bath in the considered period of time was determined. At the second stage, a mathematical model was developed and numerical studies were carried out on a computer program for its implementation, taking into account the above amounts of additives under conditions close to industrial ones. Based on the research results and the example of the cartogram given in the article, the zones of local changes in metal temperature at different points in time from the moment of introducing the additive into the melt are shown. The influence of the factor under consideration is confirmed on the given dependence of the change in melt temperature on the specific gravity of the introduced additive, taking into account the bath blowing modes. Taking into account the research results, a proportional decrease in the temperature of the metal melt in the contact zone of the additive inside the bath after its introduction is shown.
References
Piptyuk V.P., Samokhvalov S.E., Pavlyuchenkov I.A., et all. (2013) Experimental testing of the validity of mathematical models of hydrodynamics and transfer for the melt-processing conditions in ladle-furnace unit. Springer. Metallurgist. 57, 3–4, 7, 194–198 [in Englendian].
Piptyuk V.P., Polyakov V.F., Samokhvalov S.E. et al. (2009). Ispol'zovaniye chislennykh metodov v izuchenii svoystv i usloviy plavleniya materialov dobavok pri proizvodstve stali. – [Use of numerical methods in studying the properties and conditions of melting of additive materials in steel production.] Fundamentalnyye i prikladnyye problemy chernoy metallurgii - Fundamental and applied problems of ferrous metallurgy. 20, 134-147. [in Russian].
Piptyuk V.P., S.E. Samokhvalov, V.F. Polyakov et al. (2011). Modelirovaniye teplovogo sostoyaniya kovshevoy vanny ustanovki kovsh-pech' moshchnost'yu 35 MV•A - [Modeling the thermal state of the ladle bath of a ladle-furnace unit with a capacity of 35 MVA] Fundamentalnyye i prikladnyye problemy chernoy metallurgii - Fundamental and applied problems of ferrous metallurgy. 23, 137-141 [in Russian].
Piptyuk V.P., Samokhvalov S.E., Pavlyuchenkov I.A. et al. (2013). Issledovaniye teplo-, massoobmennykh protsessov v vanne ustanovki kovsh-pech'. Chast' 2. Rezul'taty modelirovaniya teplovogo sostoyaniya rasplava. – [Study of heat and mass transfer processes in the bath of a ladle furnace. Part 2. Results of modeling the thermal state of the melt]. Teoriya i praktika chernoy metallurgii. - Theory and Practice of Ferrous Metallurgy. 5-6, 49-52 [in Russian].
Piptyuk V.P., Pavlov S.N., Motsny V.V. et al. (2013). Otsenka dostovernosti rezultatov modelirovaniya teplovogo sostoyaniya kovshovoy vanny. – [Evaluation of the reliability of the results of modeling the thermal state of a ladle bath]. Metallurgicheskaya i gornorudnaya promyshlennost - Metallurgical and Mining Industry. 4, 14-16 [in Russian].
Piptyuk V.P., Samokhvalov S.E., Motsny V.V. et al. (2013). Teplovoye sostoyaniye rasplava v raznykh usloviyakh peremeshivaniya kovshovoy vanny – [Thermal state of the melt under different conditions of mixing of the ladle bath]. Protsessy litya - Casting processes 3 (99), 37-41 [in Russian].
Piptyuk V.P., Polyakov V.F., Samokhvalov S.E. (2011). Study of the thermal state of the bath of a ladle-furnace unit. Scopus Feedback: Metallurgist. 55 (7-8), 483 [in Englendian].
Piptyuk V.P., Polyakov V.F., Samokhvalov S.E. et al. (2008). Issledovaniye teplo- i massoobmena v vannakh ustanovok kovsh-pech s tselyu povysheniya effektivnosti ikh ispolzovaniya.- [Study of heat and mass transfer in baths of ladle-furnace units in order to increase the efficiency of their use]. Elektrometallurgiya – Electrometallurgiya,10, 10-17 [in Russian].
Piptyuk V.P., Samokhvalov S.E., I.N.Logozinskii, et all. (2013). Effect of reinforcing the lining in the impact zone of a steel-pouring ladle on the melt-stirring parameters Scopus Feedback: Metallurgist. 57 (7-8), 586 [in Englendian].
Piptyuk V.P., Krikent I.V., Samokhvalov S.E. et al (2014). Vliyaniye elektromagnitnykh sil na peremeshivaniye vanny ustanovki kovsh-pech peremennogo toka. [The influence of electromagnetic forces on the mixing of the bath of the AC ladle-furnace unit]. Metall i li'yo Ukrainy - Metal and casting of Ukraine, 8, 3-6 [in Russian]
Piptyuk V.P., Samokhvalov S.E., Pavlyuchenkov I.A. (2007). Mass and heat transfer in 140-t AC ladle-furnace unit. Scopus Feedback: Steel in Translation, 37 (11), 943 [in Englendian].
Piptyuk V. P., Samokhvalov S. E., Motsny V. V., et al. (2013). Тeplovoye sostoyaniye rasplava v raznykh usloviyakh peremeshivaniya kovshovoy vanny - [Thermal state of the melt under different conditions of mixing of the ladle bath]. Protsessy litya - Casting Processes, 3 (99), 37-41 [in Russian].
Samokhvalov S.E. (1994). Teplofizychni protsesy v bahatofaznykh seredovyshchakh: teoretychni osnovy kompyuternoho modelyuvannya - [Thermophysical processes in multiphase media: theoretical foundations of computer modeling]. – Dniprodzerzhynsk: DDTU - Dniprodzerzhinsk: DDTU [in Ukrainian].
Samokhvalov S.E. (1998). Metod rasshcheplenyya po fyzycheskym faktoram dlya nesolenoydalʹnoho dvyzhenyya hazozhydkostnykh sred – [The splitting method by physical factors for the non-solenoid motion of gas-liquid media]. Inzhenerno-fizicheskiy zhurnal - Engineering and Physics Journal, 71, 3, 454-459 [in Ukrainian].
Ogurtsov A.P., Samokhvalov S.E. (2001). Matematychne modelyuvannya teplofizychnykh protsesiv u bahatofaznykh seredovyshchakh – [Mathematical modeling of thermophysical processes in multiphase environments]. - Kyiv: Naukova dumka - Kyiv: Scientific opinion. [in Ukrainian].
Samokhvalov S.E., Piptiuk V.P., Grekov S.V. (2023). Vplyv kilkosti dobavky na hidrodynamiku metalevoyi vanny u kivshi – [The influence of the amount of additive on the hydrodynamics of a metal bath in a ladle]. Fundamentalnyye i prikladnyye problemy chernoy metallurgii - Fundamental and applied problems of ferrous metallurgy, 37, 231-245 [in Ukrainian].
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