In this paper, the oxidation resistance of magnesia carbon bricks with different compositions was evaluated and the influencing factors were obtained, the influence of oxidation resistance on the performance of magnesia carbon bricks was investigated. The test results showed that for low-carbon MgO-C refractories, the influence of holding time was greater than that of oxidation temperature; for medium and high carbon MgO-C refractories, the influence of oxidation temperature was greater than that of holding times. The oxidation resistance of refractories, especially that of low-carbon MgO-C refractories, improved with the increase of the content of metallic additives. The oxidation resistance improved with the increase of graphite purity, especially in the low-temperature region. It is expected that this study can contribute to the optimal selection of magnesia carbon bricks in the trunnion area of furnace lining and provide a reference for the design of refractories with long overall service life.
ThethwayoBM, SteenkampJD.A review of carbon-based refractory materials and their applications. J South Afr Inst Min Metall. 2020;120(11):641–650. DOI:10.17159/2411-9717/1011/2020.
3.
MohamedE.Carbon based refractories. J Ceram Soc Jpn. 2004;112(10):517–532.
4.
CarnigliaS, BarnaGL.Principles of thermal stability. In: Handbook of industrial refractories technology: principles, types, properties and applications. New York: William Andrew Publishing; 1992. pp. 135–142.
5.
SadrnezhaadSK, MahshidS, HashemiB, Oxidation mechanism of C in MgO-C refractory bricks. J Am Ceram Soc. 2006;89:1308–1316.
6.
LiX, RigaudM.Anisotropy of the properties of magnesia-graphite refractories: linear thermal change and carbon oxidation resistance. Can Ceram Q. 1993;62:197–205.
LiX, RigaudM, PalcoS.Oxidation kinetics of graphite phase in magnesia-carbon refractories. J Am Ceram Soc. 1995;78:965–971.
9.
MahatoS, BeheraSK.Oxidation resistance and microstructural evolution in MgO-C refractories with expanded graphite. Ceram Int.2016;42:7611–7619. DOI:10.1016/j.ceramint.2016.01.169.
10.
WatanabeA, TakahashiH, TakanagaS, Bahavior of Different Metals Added to MgO-C Bricks. Taikabutsu Overseas. 1987;7(2):17–23.
11.
RigaudM.Ceramics: charting the future, 8th CIMTEC, Florence. VincenziniP., editor. Florence, Italy: Techna Srl., Faenza, 1995, Vol. 3A, p. 399–414.
12.
MukaiK, ToguriJM, StubinaNM, A mechanism for the local corrosion of immersion nozzles. ISIJ Int1989;29(6):469–476.
13.
UchidaS, NiiharaK, IchikawaK.High-temperature properties of unburned MgO-C bricks containing Al and Si powders. J Am Ceram Soc. 1998;81(11):2910–2916. DOI:10.1111/j.1151-2916.1998.tb02713.x.
ZhangS, MarriottNJ, LeeWE.Thermochemistry and microstructures of MgO-C refractories containing various antioxidants. J Eur Ceram Soc. 2001;21(8):1037–1047. DOI: 10.1016/S0955-2219(00)00308-3
16.
IchikawaK, NishioH, NomuraO, Suppression Effects of Aluminum on Oxidation of MgO-C Bricks. Taikabutsu Overseas. 1995;15(2):21–24.
17.
BaudínC, AlvarezC, MooreRE.Influence of chemical reactions in magnesia-graphite refractories: I, effects on texture and high-temperature mechanical properties. J Am Ceram Soc. 1999;82(12):3529–3538. DOI:10.1111/j.1151-2916.1999.tb02276.x.
18.
SadrnezhaadSK, NematiZA, MahshidS, Effect of Al antioxidant on the rate of oxidation of carbon in MgO-C refractory. J Am Ceram Soc. 2007;90:509–515.
19.
HashemiB, NematiZA, FaghihiMA.Effects of resin and graphite content on density and oxidation behavior of MgO-C refractory bricks. Ceram Int. 2006;32:313–319.
20.
Faghihi-SaniMA, YamaguchiA.Oxidation kinetics of MgO-C refractory bricks. Ceram Int. 2002;28:835–839.
21.
LiuZ, YuJ, YangX, Oxidation resistance and wetting behavior of MgO-C refractories: effect of carbon content. Materials. 2018;11(6):883.
22.
SadrnezhaadSK, MahshidS, HashemiB, Oxidation mechanism of C in MgO-C refractory bricks. J Am Ceram Soc. 2006;89(4):1308–1316. DOI:10.1111/j.1551-2916.2005.00863.x.
23.
GhoshNK, GhoshDN, JagannathanKP.Oxidation mechanism of MgO-C in air at various temperatures. Br Ceram Trans. 2000;99(3):124–128. DOI:10.1179/096797800680839
24.
LiuZY, YuJK, YueSJ, Effect of carbon content on the oxidation resistance and kinetics of MgO-C refractory with the addition of Al powder. Ceram Int. 2020;46:3091–3098. DOI:10.1016/j.ceramint.2019.10.010.
25.
GassSE, CalvoWA, MolinéMN, Combined effects of the graphite content and addition of aluminum in the characteristics of resin-bonded MgO-C bricks. Mater Today Commun. 2022;30. DOI:10.1016/j.mtcomm.2021.103057.
26.
BounziovaJ, NagyováI, ZajacV, Testing magnesia-carbon bricks for oxidation resistance. Acta Metall Slovaca. 2016;22(3):164.
