Effect of Increase in Basicity of Slag on the Corrosion of Tundish DVM

Atanu R. Pal1, Mousom Bag2, Ritwik Sarkar2

1 Refractory Technology Group, Tata Steel, Jamshedpur/India
2 Dept of Ceramic Eng., National Institute of Technology,Rourkela/India

Revision

Volume 6, Issue 2, Pages 45 - 48

Abstract

In continuous casting of steel, tundish acts as an intermediate vessel between ladle and mould. In order to satisfy the requirement of metallurgical technology development such as clean steel making, high speed casting, lowering of non-metallic inclusion, it is necessary to develop high quality tundish refractory with long service life. The present work studies the effect of basicity of tundish slag on the corrosion properties of tundish working lining, namely DVM.Addition of magnesia was done to tundish slag to increase its basicity. Corrosion behavior was studied by means of penetration depth, chemical and phase analysis of the corroded portion of the DVM samples. Penetration depth was found to be reduced significantly above a basicity of 0,72.

Keywords

tundish slag, basicity, DVM, corrosion

References

[1] Das, S.K.: Refractory practice in continuous cast ing tundish. Proc. of the National Seminar on Refractories & Furnaces, 21–22 Dec. 2000, Kolkata, India, p. 54–60 [2] Johnson, J.B.; Saylor, K.J.: A comparison of disposable magnesite tundish lining systems. Presented at the 73rd ISS steel making conference, Detroit, MI, USA, 1990 [3] Bradley M.J.: Overview of tundish dry vibe technology. MPT Int. 2 (2008) 70–72 [4] Tassot, P.: Cold setting DVM for tundish a real alternative. Proc. of the 3rd Int. Conf. on Refractories at Jamshedpur, India (ICRJ), 2013, p. 187–191

Copyright

Göller Verlag GmbH