The Optimal Ratio of Mixed Talc Silica and Narathiwat Clay for Cordierite-Mullite Refractories

Abstract:

In this paper, effects of incorporation of Narathiwat clay (NT), talc and silica on the mechanical properties of cordierite-mullite refractories were investigated. The starting raw materials were mixed in different ratios and fired at 1300 °C for 2 hours. XRD patterns of fired refectories indicated cordierite and mullite phases. The fired samples were studied the firing shrinkage, water absorption, bulk density, apparent porosity and bending strength of the cordierite-mullite refractories. The optimum condition was achieved for the composition of 20% Talc that had shrinkage: 11.78%, water absorption: 4.16%, bulk density: 2.28 g/cm³, apparent porosity: 9.2% and bending strength: 330.82 kg/cm². The results thus showed that Narathiwat clay, talc and silica was a potential materials for use kiln furniture cordierite-mullite refractories.

• Periodical: Key Engineering Materials (Volume 766)
• Pages: 223-227
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.766.223
• Online since: April 2018
• Authors: Nattawut Ariyajinno*, Sakdipown Thiansem
• Keywords: Cordierite, Mullite, Narathiwat Clay, Refractory, Talc

References

[1] D.N. Boccaccini, C. Leonelli, M.R. Rivasi, M. Romagnoli, A.R. Boccaccini, Microstructural investigations in cordierite–mullite refractories, Ceram. Int. 31(2005) 417-432.

DOI: 10.1016/j.ceramint.2004.06.005

[2] C.Y. Chen, G.S. Lan, W.H. Tuan, Preparation of mullite by the reaction sintering of kaolinite and alumina, J. Eur. Ceram. Soc. 20 (2000) 2519-2525.

DOI: 10.1016/s0955-2219(00)00125-4

[3] D.U. Tulyaganov, S.M.H. Olhero, M.J. Ribeiro, J.M.F. Ferreira, J.A. Labrincha, Mullite-alumina refractory ceramic obtained from mixtures of natural common materials and recycled Al-rich anodizing sludge. J. Mater. Synth. Proc. 10 (2002) 311-318.

DOI: 10.1016/s0272-8842(01)00097-9

[4] M.J. Ribeiro, J.A. Labrincha, Properties of sintered mullite and cordierite pressed bodies manufactured using Al-rich anodising sludge Ceram. Int. 34 (2008) 593–597.

DOI: 10.1016/j.ceramint.2006.12.005

[5] T. Takei, Y. Kameshima, A. Yasumori, K. Okada, Crystallization Kinetics of Mullite in Alumina–Silica Glass Fibers, J. Am. Ceram. Soc. 82 (10) (1999) 2876–2880.

DOI: 10.1111/j.1151-2916.1999.tb02171.x

[6] B.B. Ghate, D.P.H. Hasselman, R.M. Spriggs, Synthesis andcharacterization of high purity, fine grained mullite, Am. Ceram. Soc. Bull. 52 (9) (1973) 670–672.

[7] D.M. Ibrahim, S.M. Naga, Z.A. Kader, E.A. Salam, Cordierite-mullite refractories Ceram. Int. 21 (1995) 265–269.

DOI: 10.1016/0272-8842(95)99792-a

[8] X.C. Zhong, G.C. Sun, The effect of mullite on the mechanical properties and thermal shock behaviour of alumina–mullite refractory materials, In: UNITECR '97, Proc. Unified Int. Tech. Conf. on Refractories, 5th Biennial Worldwide Congress, Refractories—A Worldwide Technology, New Orleans, (1997).

DOI: 10.4028/www.scientific.net/kem.264-268.1811

[9] T. Sato, M. Shizuka, M. Shimada, Sintering and characterization of mullite—Alumina composites, Ceram. Int. 12 (2) (1986) 61–65.

[10] C. Aksel, The effect of mullite on the mechanical properties and thermal shock behaviour of alumina–mullite refractory materials, Ceram. Int. 29 (2003) 183–188.

DOI: 10.1016/s0272-8842(02)00103-7