Regularities of hydrogen removing on the ladle degassing plant
Abstract
In this paper have been identified the main parameters of steel degassing. They determine hydrogen removal efficiency by ladle degassing plant, operating in EAF JSC "Ural Steel": vacuum level, vacuum period, argon consumption, ladle temperature, the thickness of slag layer and freeboard.
The quantitative effect of the vacuum parameters was determined. The regression equation that allows to predict the results of the removal of hydrogen was obtained. This equation can choice value of vacuum parameters in order to achieve a specified of hydrogen content in the steel.
The rational vacuum parameters have been defined which provide of hydrogen content of 2.1 ppm in the steel: a metal superheat temperature 100-110 °C, vacuum period to 20 minutes under pressure in the vacuum vessel at most 1.5 mbar, argon consumption - 0.05 m3/t.
The minimum residual content of hydrogen in steel, which is 1,6 ppm, is ensured at carrying out of steel degassing with superheat temperature of 120-125 °C for 40 minutes at a pressure in the vacuum vessel at most 1 mbar and the argon consumption to 0.072 m3/t.About the Authors
Vlasta Dilyaurovna TutarovaRussian Federation
candidate of technical sciences, assistant professor of the Chair of metallurgical technologies and equipment
Alexey Nikolaevich Shapovalov
Russian Federation
candidate of technical sciences, assistant professor of the Chair of metallurgical technologies and equipment
Aleksandr Nikolaevich Kalitaev
Russian Federation
candidate of technical sciences, assistant professor of the Chair of Computer Engineering and Programming
References
1. Kudrin V.A. Teorija i tehnologija proizvodstva stali [The theory and steel production technology]. Moskow: Mir, OOO «Izdatel'stvo ACT», 2003. 528 p. (In Russ.)
2. Povolockij D.Ja., Kudrin V.A., Vishkarev A.F. Vnepechnaja obrabotka stali [Secondary Metallurgy]. Moskow: MISiS, 1995. 256 p. (In Russ.)
3. Morozov A.N., Strekalovskij M.M., Chernov G.I., Kacnel'son Ja.E. Vnepechnoe vakuumirovanie stali [tapped-metal degassing]. Moskow: Metallurgija, 1975. 288 p. (In Russ.)
4. Knjuppel' G. Raskislenie i vakuumnaja obrabotka stali. Chast' 1. Termodinamicheskie i kineticheskie zakonomernosti [Deoxidation and steel degassing. Part 1: Thermodynamic and kinetic regularities]. Moskow: Metallurgija, 1973. 312 p. (In Russ.)
5. Shapovalov A.N., Tutarova V.D., Kalitaev A.N. Sovershenstvovanie tehnologii vakuumirovanija osevyh marok stalej v uslovijah JeSPC OAO «Ural'skaja Stal'» [Improving the technology of vacuum degassing axial steels under EAF JSC "Ural Steel"]. Litejnye processy, 2003. No.12. pp. 93-103. (In Russ.)
6. Kalitaev A.N., Tutarova V.D., Shapovalov A.N., Bazhukov D.O. Problemy formirovanija kachestvennoj nepreryvnolitoj krugloj zagotovki na MNLZ [Continuous quality problems of formation round billets at CCM №1 JSC "Ural Steel"]. Izvestiya vysshikh uchebnykh zavedenii. Chernaya metallurgiya, 2013. No.5. pp. 27-32. (In Russ.)
7. Shevchenko E.V., Shapovalov A.N. Problemy poluchenija kachestvennoj sljabovoj zagotovki na MNLZ №2 OAO «Ural'skaja Stal'» [Problems for good slab ingot in CCM №2 JSC «Ural Steel»]. Vestnik JuUrGU. Serija «Metallurgija», 2013. Vol. 13. No.1. pp. 68-73. (In Russ.)
8. Tekhnologicheskaya instruktsiya TI 13657842-СТ. ЭС-03-2014. Obrabotka stali na ustanovke vakuumirovanija [Technological instruction TI 13657842-СТ. ЭС-03-2014. Steel degassing], Novotroitsk, JSC "Ural Steel", 2014. 18 p. (In Russ.)
9. Burgman V., Davene Zh. Struktura zatrat na vakuumirovanie stali s uchetom obrabotki v agregate kovsh-pech' [The structure of the vacuum steel in the cost with processing in the ladle furnace]. Chernye metally, 2012. No.11. pp. 41-49. (In Russ.)
10. Zinchenko S.D., Filatov M.V., Efimov S.V., Dub A.V., Goshkadera S.V. Tehnologicheskie aspekty udalenija vodoroda s ispol'zovaniem ustanovki kovshevogo vakuumirovanija stali [Technological aspects of the removal of hydrogen using a ladle degassing plant]. Metallurg, 2004. No.11. pp. 41-42. (In Russ.)
11. Smirnov A.N., Safonov V.M. Vakuumirovanie stali: tehnologija, oborudovanie [Steel degassing: technology, equipment]. Jelektrometallurgija, 2008. No.11. pp. 8-14. (In Russ.)
12. Nikolaev A.O., Bigeev V.A., Nikolaev O.A., Chigasov D.K. Osobennosti vakuumirovanija trubnyh marok stali v uslovijah KKC OAO «MMK» [Features of vacuum tube steel grades in a CCC OJSC "MMK"]. Jelektrometallurgija, 2013. No.4. pp. 19-24. (In Russ.)
13. Zhitluhin E.G., Meling V.V., Dresvjankina L.E., Gudov A.G., Stepanov I.A. Osvoenie i povyshenie jeffektivnosti tehnologii vakuumirovanija stali [The development and improvement of the efficiency of steel degassing]. Stal', 2014. No.6. pp. 12-14. (In Russ.)
14. Protasov A.V., Sivak B.A., Luk'janov A.V., Nikitenko A.S., Shhjogolev N.A. Sostojanie i perspektivy razvitija kovshovogo vakuumirovanija zhidkoj stali [Condition and Prospects of vacuum ladle of molten steel]. Chernaja metallurgija, 2010. No.11(1331). pp. 38-44. (In Russ.)
15. Nebosov Ju.I., Suharev S.V., Kazakov S.V. Raschet kinetiki udalenija vodoroda v gazovuju fazu pri kovshevom vakuumirovanii [Calculation of kinetic remove hydrogen in the gas phase during ladle vacuum treatment]. Izvestija vysshih uchebnyh zavedenij. Chernaja metallurgija, 2007. No.7. pp. 16-18. (In Russ.)
16. Morozov A.N. Vodorod i azot v stali [Hydrogen and nitrogen in steel]. Moskow: Metallurgija, 1968. 283 p. (In Russ.)
17. Karpenko G.V., Kripjatkevich R.I. Vlijanie vodoroda na svojstva stali [The effect of hydrogen on the properties of steel]. Moskow: Metallurgizdat, 1962. 197 p. (In Russ.)
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For citations:
Tutarova V.D., Shapovalov A.N., Kalitaev A.N. Regularities of hydrogen removing on the ladle degassing plant. Izvestiya. Ferrous Metallurgy. 2017;60(3).
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