DOI: 10.52150/2522-9117-2024-38-186-198

Kysliakov Volodymyr Hennadiiovych, Ph. D. (Tech.), Senior Researcher, Head of Department, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0002-1775-5050. E-mail: ovoch-isi@outlook.com

Manachyn Ivan Oleksandrovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-9795-6751. E-mail: ovoch-isi@outlook.com

Yelisieiev Volodymyr Ivanovych, Ph. D. (Pys.-Math.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0003-4999-8142. E-mail: ovoch-isi@outlook.com

Rudenko Oleksandr Leonidovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, 49107, Ukraine. ORCID: 0000-0001-6068-9901. E-mail: ovoch-isi@outlook.com

STUDY OF GAS-POWDER JETS INJECTION BY COLD MODELING METHODS

Abstract. The aim of the work is to study the processes of injecting gas-powder jets into a liquid bath on cold models and determine the processing parameters. To implement the cold modeling, an installation was mounted at the laboratory base of the Institute of Ferrous Metallurgy, which provides a controlled reagent injection. The reagents used were soda, lime, and iron (II) oxide. The simulation was carried out with the reagent being dispensed into a dry container and into a container with water, which was an imitation of a ladle. Before pouring the reagent into the dosing device, sieving was performed, the mesh diameter of the smallest sieve was 1 mm. A surfactant was also added to the reagent to improve the movement of the reagent. During the operation of the installation, the readings of the manometers installed on the gas carrier outlet route and on the dosing device were recorded. The dosing device was calibrated. Also, during injection into a bucket of water, the behavior of the jet without reagent during immersion was video recorded, as well as the beginning of the reagent supply and the surface of the “melt”. A number of treatments were carried out at different gas flow rates and at different intensities of reagent supply. A summary table of the results of the treatments was obtained, which became the basis for further processing of the results of the cold modeling studies. The system of equations for a one-dimensional two-phase steady-state flow is shown. This system includes the equation of state of the gas, the equation for determining the heat transfer between the gas and the pipe wall, the equations for the interfacial force, the attached mass, and the interfacial heat flux. Boundary conditions are formulated based on natural considerations. Using the developed methodology, we calculated the pressure drop, velocities of the gas and solid phases for CaO particles with a diameter of 60 and 100 μm; FeO – 70 and 450 μm; Na₂CO₃ – 100 μm).

Keywords: reagent mixture, cold model, injection, complex treatment, hydrodynamics.

DOI: https://doi.org/10.52150/2522-9117-2024-38-186-198

For citation: Kysliakov, V. H., Manachyn, I. O., Yelisieiev, V. I., & Rudenko, O. L. (2024). Study of gas-powder jets injection by cold modeling methods. Fundamental and applied problems of ferrous metallurgy, 38, 186-198. https://doi.org/10.52150/2522-9117-2024-38-186-198

References

1. Ueda, M., Shirota, Y., & Yamamota, T. (1986). Development of continuous impurity removal process on blast furnace chute Scaninject IV. 4th International Conference on Injection Metallurgy, Lulea, Sweden, June 11-13, 1986, Proceedings

2. Eawasaki, Sh., Aoki, M., Kashimori, A., Takagi, H., & Kshiwaku, Onishi T. (1986). Dephosphorization and desulfurization in the pretreatment of pig iron. 4th International Conference on Injection Metallurgy, Lulea, Sweden, June 11-13, 1986, Proceedings

3. Yoshimura, M., & Yoshikawa, S. (1980). Production of ultrapure steels and their fatigue properties. Scaninject II. 2nd International Conference on Injection Metallurgy, Luleå, Sweden, June 12-13, 1980, Proceedings

4. Smirnov, N. A. (2015). Rafinirovanie stali vduvaniem poroshkoobraznyh materialov Vestnik YuUrGU. Seriya “Metallurgiya”, 15(3), 33–42

5. Soo, S. L. (1967). Fluid dynamics of multi-phase systems. Blaisdell

6. Nigmatulin, R. I. (1987). Dinamika mnogofaznyh sred. Part 1. Nauka

7. Nakorchevskij, A. I., & Basok, B. I. (2001). Gidrodinamika i teplomassoperenos v geterogennyh sistemah i pulsiruyushih potokah. Naukova dumka

8. Kondratev, A. S., Na, T. L., & Shvydko, P. P. (2018). Inzhenernye metody rascheta gidrotransportirovaniya tverdyh chastic v gorizontalnyh i vertikalnyh trubah. Inzhenernyj zhurnal: nauka i innovacii, (3), 1–19. https://doi.org/10.18698/2308-6033-2018-3-1740

9. Kril, S. I., & Chalcev, M. N. (2010). K voprosu o metodikah rascheta osnovnyh parametrov pnevmotransporta sypuchih materialov po gorizontalnym trubam. Prikladna gidromehanika, 12(4), 36 – 44

10. Tarasov, V. P., & Muhopad, K. A. (2019). Razvitie teorii raboty odnotrubnoj pnevmotransportnoj ustanovki. Teor. Osnovy him. tehnologii, 53(3), 349–360

11. Timoshenko, V. I., & Knyshenko, Yu. V. (2013). Pnevmotransport sypuchih materialov s povyshennym davleniem nesushego gaza. Nauka ta innovaciyi, 9(1), 5–17

12. Yeliseyev, V. I., Tolstopyat, A. P., Fleyer, L. A., Sovit, Yu. P., Shevchenko, A. F., & Shevchenko, S. A. (2019). Dvizhenie dvuhfaznogo potoka v furme. Visnik Dnipropetrovskogo universitetu. Seriya Mehanika, 27(5), 21–34

13. Lojcyanskij, L. G. (2003). Mehanika zhidkosti i gaza. Drofa

14. Timoshenko, V. I. (2003). Gazovaya dinamika vysokotemperaturnyh tehnologicheskih processov. Institut tehnicheskoj mehaniki NANU i NKAU

15. Voloshin, A. I., & Ponomarev, B. V. (2001). Mehanika pnevmotransportirovaniya sypuchih materialov. Naukova dumka

16. Shrajber, A. A., Milyutin, V. N., & Yacenko, V. P. (1980). Gidromehanika dvuhkomponentnyh potokov s tverdym polidispersnym veshestvom. Naukova dumka

17. Varaksin, A. Yu., Protasov, M. V., & Yacenko, V. P. (2013). Analiz mehanizmov osazhdeniya tverdyh chastic na stenki kanalov. Teplofizika vysokih temperatur, 51(5), 738 -746