Investigations of Porous Mullitic Materials Based on Greek Raw Materials for High Temperature Applications

G. Kostakis1, Chr. G. Aneziris2, S. Thomaidis3

1 Technical University of Crete, Dept. of Mineral Resources Engineering, 73100 Chania/Greece
2 TU Bergakademie Freiberg, 09599 Freiberg/Germany
3 Technical University of Crete, Dept. of Mineral Resources Engineering, 73100 Chania/Greece

Revision 06.10.2011, 24.10.2011

Volume 4, Issue 3, Pages 80 - 86

Abstract

Mixtures of bauxite and kaolin in various proportions were heated at temperatures up to 1500 °C in order to create porous ceramic materials for possible use in refractory applications. The physical properties of technological interest related to the possibility of using them in refractory applications are investigated. On this way the production of an open-porous mullitic material of an interesting combination of properties such as sufficient compressive strength as well as refractoriness under load is achieved.

Keywords

open porous mullitic material, bauxite, kaolin, fly ash

References

 

1] Yingchao Dong; et al.: Preparation of low-cost mullite ceramics from natural bauxite and industrial waste fly ash. J. Alloys and Compounds 460 (2008) 599–606

 

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

 

3] Temuujin, J.; et al.: Phase evolution in mechanically treated mixtures of kaolinite and alumina hydrates (gibbsite and boehmite). J. Eur. Ceram. Soc. 20 (2000) 413–421

 

4] Sainz, M.A.; et al.: XRD microstructural analysis of mullites obtained from kaolinite-alumina mixtures. J. Eur. Ceram. Soc. 20 (2000) 403–412

 

5] Bish, D.L.; Howard, S.A.: Quantitative phase analysis using the Rietveld method. J. Appl. Crystallogr. 21 (1988) 86–91

 

6] Windburn, R.S.; et al.: Rietveld x-ray quantitative analysis of NIST fly ash standard reference materials. Powder Diffr. 15 (2000) [3] 163–172

 

7] Kleeberg, G.R.; Bergmann, J.: Quantitative Röntgenphasenanalyse mit den Rietveld-Programmen BGMN und AUTOQUAN in der täglichen Laborpraxis. Ber. DTTG 6 (1998) 237–250

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