Corrosion of carbon steel and cast iron in gas phase above salt melts used in magnesium industry
https://doi.org/10.17073/0021-3438-2019-1-34-49
Abstract
Corrosion tests of SCh15 cast iron, Steel 3 and Steel 3 with aluminized coating in some compositions of 10%MgCl2-KCl-NaCl and 10%MgCl2-KCl-Naa-Caa2 salt melts with 10 %, 25 % and 40 % CaCl2 concentrations, and also in 10MgCl2-45%KCl-20%NaCl-25%NaBr melt, and in the gas phase above these melts at 700 °C. A gravimetric method was used to determine corrosion rates of metal samples. Chemical analysis of absorption solutions was used to determine concentrations of halide and hydrogen halide impurities in air blown through the reactor with melts and samples. It was shown that carbon steel aluminizing can reduce the corrosion rate in the gas phase over the salt melt by a factor of 5 to 70. The formation mechanism of gases aggressive in relation to carbon steel and cast iron in atmospheric air in contact with salt chloride melt was considered. Accelerated hydrogen chloride and chlorine formation during the salt melt interaction with atmospheric air under the influence of iron corrosion products was found.
About the Authors
I. M. Komelin
National University of Science and Technology (NUST) «MISIS»
Russian Federation
Russian Federation
Komelin I.M. — leading engineer of the Department of non-ferrous metals and gold.
119049, Moscow, Leninskii pr., 4
A. P. Lysenko
National University of Science and Technology (NUST) «MISIS»
Russian Federation
Russian Federation
Lysenko A.P. — Cand. Sci. (Tech.), associate prof., professor of the Department of non-ferrous metals and gold.
Moscow
D. S. Kondrat'eva
National University of Science and Technology (NUST) «MISIS»
Russian Federation
Russian Federation
Kondrat'eva D.S. — postgraduate student of the Department of non-ferrous metals and gold.
Moscow
References
1. Moskvitin V.I., Nikolaev I. V, Fomin B.A. Metallurgy of light metals. Moscow: Intermet Inzhiniring, 2005. P. 312—324 (In Russ.).
2. D’achenko A.N., Kraidenko R.I., Kurchenko E.I. Corrosion resistance of metals and alloys in the system of fluorides. Bulletin of Perm National Research Polytechnic University. 2017. Vol. 19. No. 4. DOI: 10.15593/2224-9877/2017.4.05 (In Russ.).
3. Barabanov V.G., Zotikov V.S., Limonova L.P., Maksimov B.N.. Semerikova A.I., Stepanov V.P. Corrosion of equipment in the production of halogen-containing substances. Ed. V.S. Zotikov. Saint-Petersburg: TEZA, 1998 (In Russ.).
4. Reznikov I.L., Tanaev A.F., Ukshe N.S. Corrosion of cast iron, carbon steel and chrome-Nickel steels at 400— 600 °C in air containing HCl, Cl2, H2O and SO2. Zashchita metallov. 1972. Vol. 8. No. 2. P. 157—162 (In Russ.).
5. Putina O.A. Investigation of nickel and steel corrosion in molten chlorides of alkaline and alkaline earth metals and in liquid magnesium: Diss. ... Cand. Sci. (Chem.). Sverdlovsk: UPI, 1973 (In Russ.).
6. Barannik I.A., Komelin I.M., Sikorskaya I.L., Zhurov V.V. Method for the continuous refining of magnesium: Pat. 41575 (Ukr.). 2009 (In Russ.).
7. Nikolaev M.M., Yazev V.D., Kashkarov I.A., Rymkevich D.A., Chutkov A.P. Furnace for refining of magnesium: Pat. 2283886 (RF). 2006 (In Russ.).
8. Gribov V.I., MikhailovA.O., Ryaposov Yu.A. Furnace for the continuous refining of magnesium: Pat. 2400685 (RF). 2010 (In Russ.).
9. Gilad Golub, Katsnelson Gennady, Zinn Menachem, Aghion Eliyahu. Bromide salts as weightening agents for molten salts: Pat. 6132490 (USA). 2000.
10. Komelin I.M., Barannik I.A., Petriv M.I., Zhurov V.V. Flux for melting and refining of magnesium and its alloys: Pat. 36141 A (Ukr.).1999 (In Russ.).
11. Barannik I.A., Komelin I.M., Gerb A.P., Petriv M.I. Method of preparation of flux for melting and refining of magnesium and its alloys: Pat. 12704 (Ukr.). 2005 (In Russ.).
12. Putina O.A., Putin A.A., Gulyakin A.I., Nechaev N.P., Ru-bel’ O.A., Lyamin S.G., Novikov S.M., Zhulanov N.K., Belkin N.A., Temnikov V.V, Remeslov M.N. Flux for refining and protection against burning of magnesium and its alloys: Pat. 2217512 (RF). 2002 (In Russ.).
13. Teterin V.V, Bezdolya I.N., ShundikovN.A., MikhailovE.F., Paderina N.S. Method of obtaining flux for melting and refining of magnesium or its alloys: Pat. 2407813 (RF). 2009 (In Russ.).
14. Kochergin V.P. High-temperature corrosion of transition metals in ion melts. Sorosovskii obrazovatel’nyi zhurnal. 1997. No. 8. P. 60-65 (In Russ.).
15. Kochergin V.P., Putina O.A., Devyatkin V.N., Kanaeva E.T. On the stationary potential of steel 3 in molten sodium, potassium and alkaline earth metal chlorides. Trudy VAMI. 1971. No. 75. P. 51-55 (In Russ.).
16. Kochergin V.P., Stolyarova G.I. Iron dissolution in molten mixtures of lithium and potassium, sodium and potassium chlorides. Zhurnal prikladnoi khimii. 1956. No. 5. P. 730733 (In Russ.).
17. Smirnov M.V, Krasil’nikova N.A., Ozeryanaya I.N. Interaction of iron with pure chlorides of alkali metals and with solutions in them hydrogen chloride. Trudy Instituta elektrokhimii UNTs ANSSSR. 1970. Vol. 16. P. 78-81 (In Russ.).
18. Lukmanova G.L., Vil’nyanskii Ya.E. The solubility of some gases in the melt of metal chlorides. Izv. vuzov. Khimiya i khimicheskaya tekhnologiya. 1966. Vol. 9. No. 4. P 537540 (In Russ.).
19. Ozeryanaya I.N., Thai V, Smirnov M.V. Solubility of hydrogen chloride in molten magnesium and strontium chlorides. In: Electrochemistry of molten salt and solid electrolytes. 1973. Iss. 19. P. 13-16 (In Russ.).
20. Nekrasov V.N. Physical chemistry of halogen solutions in halide melts. Moscow: Nauka, 1992 (In Russ.).
21. Novozhilov A.L. Thermodynamics and structure of solutions of gases and water vapors in molten salts: Abstract of the dissertation of Dr. Sci. (Chem.). Sverdlovsk: Institut elektrokhimii UNTs AN SSSR, 1988 (In Russ.).
22. Novozhilov A.L, Gribova E.I., Devyatkin V.N. The study of the state of HCl in molten chlorides of alkali and alkaline earth metals by the method of IR-spectroscopy. Zhurnal neorganicheskoi khimii. 1972. Vol. 17. No. 8. P. 2078-2080 (In Russ.).
23. Novozhilov A.L. The solubility of hydrogen chloride in the melts ofthe system KCl-MgC^. Zhurnal neorganicheskoi khimii. 1984. Vol. 29. No. 1. P. 218-221 (In Russ.).
24. Novozhilov A.L., Gribova E.I., Devyatkin V.N. Solubility of hydrogen chloride in molten chlorides of alkaline earth metals. Zhurnalneorganicheskoi khimii. 1972.Vol. 17. No. 9. P. 2570-2572 (In Russ.).
25. Putina O.A., Bondarev S.N., Vyatkin I.P., Kanaev I.E., Brandman O.I. The corrosion resistance of metal structures of the furnace for the continuous refining of magnesium. In: Magnesium and titanium production: Proc. VAMI. 1972. No. 883. P. 64-68 (In Russ.).
26. Strelets Kh.L., Desyatnikov O.G. Density of molten salts in the isoconcentration section [10 % (wt.) MgCy of the system MgCl2-CaCl2-NaCl-KCl. Trudy VAMI. 1957. No. 39. P. 401-412 (In Russ.).
27. Tomashov N.D., Zhuk N.P, Titov V.A., Vedeneeva M.A. Laboratory work on corrosion and protection of metals. Moscow: Metallurgiya, 1971 (In Russ.).
28. Zabyelin I.V, Komelin I.M., Barannik I.A., Sikorskaya I.L. On specific features of operating crucibleless salt-bath furnaces. In: Magnesium — science, technology and applications: Mater. Sci. Forum. 2005. Vol. 488-489. P. 8994. DOI: 10.4028/www.scientific.net/MSF.488-489.89.
29. Furman A.A. Inorganic chlorides. Moscow: Khimiya, 1980. P. 382-394 (In Russ.).
30. Pechkovskii V.V., Aleksandrovich Kh.M., Pinaev G.F. The technology of potash fertilizer. Minsk: Vysheishaya shkola, 1968 (In Russ.).
31. Loginov N.A., Oleinikova V.A. Equilibrium concentration of Fe3+ in NaCl, (NaCl-KCl), KCl and CsCl melts in equilibrium with iron. Rasplavy. 2000. No. 6. P. 27-30 (In Russ.).
32. Pechkovskii V.V., Vorob’ev N.I. Thermochemical transformations of iron chlorides. Zhurnal neorganicheskoi khimii. 1964. Vol. IX. Iss. 1. P. 12-19 (In Russ.).
33. Latina Z.I., Furman A.A. The interaction of ferric chloride with iron oxide. Zhurnal prikladnoi khimii. 1970. No. 4. P. 830-834 (In Russ.).
Review
For citations:
Komelin I.M., Lysenko A.P., Kondrat'eva D.S. Corrosion of carbon steel and cast iron in gas phase above salt melts used in magnesium industry. Izvestiya. Non-Ferrous Metallurgy. 2019;(1):34-49. (In Russ.) https://doi.org/10.17073/0021-3438-2019-1-34-49
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