Improvement of rheological characteristics of carbon containing alumina-rich castable matrix by surfacetreated graphites

R. Dutta; D. Pal Choudhury; S. Mukhopadhyay

doi:10.17073/1683-4518-2020-6-37-40

Improvement of rheological characteristics of carbon containing alumina-rich castable matrix by surfacetreated graphites

R. Dutta, D. Pal Choudhury, S. Mukhopadhyay

https://doi.org/10.17073/1683-4518-2020-6-37-40

Full Text:

Abstract

The main objective of this work was to explore the improved water-dispersibility obtained in natural graphite after its surface treatment. The superior flowability of the aqueous suspension of an alumina-rich representative castable matrix incorporating that surface-modified graphite without prior sonication has been observed. The typical role of alumina-based thin coating on graphite has also been addressed.

Keywords

alumina, castable, rheology, graphite,

About the Authors

R. Dutta

Университет Калькутты
India

D. Pal Choudhury

Университет Калькутты
India

S. Mukhopadhyay

Университет Калькутты
India

References

1. Kawabata, K. Properties of Al2O3‒C castable refractories with graphite powder coated with Al2O3 / K. Kawabata, H. Yoshimatsu, E. Fujii [et al.] // J. Ceram. Soc. Jpn. ― 2001. ― Vol. 109. ― P. 270‒273.

2. Zhang, S. Improving the water-wettability and oxidation resistance of graphite using Al2O3/SiO2 sol-gel coatings / S. Zhang, W. E. Lee // J. Eur. Ceram. Soc. ― 2003. ― Vol. 23, № 8. ― Р. 1215‒1221. doi.org/10.1016/S0955-2219(02)00284-4.

3. Saberi, A. Development of MgAl2O4 spinel coating on graphite surface to improve its water-wettability and oxidation resistance / A. Saberi, F. G. Fard, H. Sarpoolaky [et al.] // Ceram. Int. ― 2009. ― Vol. 35, № 1. ― Р. 457‒461. doi.org/10.1016/j.ceramint.2007.12.007.

4. Mukhopadhyay, Sunanda. Spinel ― coated graphite for carbon containing refractory castables / Sunanda Mukhopadhyay, Sarbasree Dutta, Sheikh A. Ansar [et al.] // J. Am. Ceram. Soc. ― 2009. ― Vol. 92, № 8. ― Р. 1895‒1900. doi.: 10.1111/j.1551-2916.2009.03133.x.

5. Liu, X. Water-wettability and dispersivity of TiCcoated graphite for refractory castable applications / X. Liu, S. Zhang // Refractories Manual ― Interceram. ― 2010. ― Vol. 59. ― P. 15‒18.

6. Mukhopadhyay, S. Nanostructured cementitious sol gel coating on graphite for application in monolithic refractory composites / S. Mukhopadhyay, G. Das, I. Biswas // Ceram. Int. ― 2012. ― Vol. 38, № 2. ― Р. 1717‒1724. doi.org/10.1016/j.ceramint.2011.09.006.

7. Kashcheev, I. D. Additives to control the rheological properties of unshaped castables / I. D. Kashcheev, K. G. Zemlyanoi // Refract. Ind. Ceram. ― 2005. ― Vol. 46, № 5. ― Р. 325‒328.

8. Mukhopadhyay, S. Comparison of solid state and sol-gel derived calcium aluminate coated graphite and characterization of prepared refractory composite / S. Mukhopadhyay, S. Dutta // Ceram. Int. ― 2012. ― Vol. 38. ― P. 4997‒5006. doi.org/10.1016/j.ceramint.2012.02.096.

9. Mukhopadhyay, S. In depth studies on cementitious nanocoatings on graphite for its contribution in corrosion resistance of alumina based refractory composite / S. Mukhopadhyay, C. Mondal, A. Chakraborty [et al.] // Ceram. Int. ― 2015. ― Vol. 41. ― P. 11999‒12010. doi.org/10.1016/j.ceramint.2015.06.012.

10. Ansar, Sk. A. Development of mullite and spinel coatings on graphite for improved water-wettability and oxidation resistance / Sk. A. Ansar, S. Bhattacharya, S. Dutta [et al.] // Ceram. Int. ― 2010. ― Vol. 36. ― P. 1837‒1844. doi: 10.1016/j.ceramint.2010.03.035.

11. Mukhopadhyay, S. Improved sol-gel spinel (MgAl2O4) coatings on graphite for application in carbon containing high alumina castables / S. Mukhopadhyay // J. Sol-Gel Sci. Technol. ― 2010. ― Vol. 56. ― P. 66‒74. doi.org/10.1007/s10971-010-2275-9.

12. Mukhopadhyay, Sunanda. Characteristics of refractory castables containing mullite and spinel coated graphites / Sunanda Mukhopadhyay, Sk. Abdul Ansar, D. Paul [et al.] // Mater. Manuf. Process. ― 2012. ― Vol. 27. ― P. 177‒184. doi.org/10.1080/10426914.2011.560501.

13. Mukhopadhyay, S. Nanoscale calcium aluminate coated graphite for improved performance of alumina based monolithic refractory composite / S. Mukhopadhyay // Mat. Res. Bull. ― 2013. ― Vol. 48. ― P. 2583‒2588. doi. org/10.1016/j.materresbull.2013.03.006.

14. Das, Paromita. Extended studies on surfactreated graphite vis-à-vis its application in high alumina refractory castable / Paromita Das, Sarbasree Dutta, Nandini Das, Sunanda Mukhopadhyay // Int. J. Appl. Ceram. Tech. ― 2018. ― Vol. 15. ― P. 668‒677. doi.org/10.1111/ijac.12852.

15. Mukhopadhyay, S. Effect of preformed and in situ spinels on microstructure and properties of a low cement refractory castable / S. Mukhopadhyay, P. K. DasPoddar // Ceram. Int. ― 2004. ― Vol. 30, № 3. ― Р. 369‒380. doi.org/10.1016/S0272-8842(03)00117-2.

16. Arai, Y. Chemistry of powder production, Chapman and Hall / Y. Arai. ― New York, 1996. ― P. 49, 70.

17. Horn, R. G. Surface forces and their action in ceramic materials / R. G. Horn // J. Am. Ceram.Soc. ― 1990. ― Vol. 73, № 5. ― P. 1117‒1135. doi.org/10.1111/j.1151-2916.1990.tb05168.x.

18. Park, H. C. Effect of green microstructure on sintered microstructure and mechanical properties of reaction-bonded silicon carbide / H. C. Park // J. Korean Ceram. Soc. ― 1999. ― Vol. 36, № 1. ― Р. 97‒105.

19. Mukhopadhyay, S. The influence of surfacemodified graphites on the rheological pattern of alumina-carbon cementitious refractory castable matrix / S. Mukhopadhyay // Ceram. Int. ― 2019. ― Vol. 45, № 16. ― Р. 19991‒20001. doi: 10.1016/j.ceramint.2019.06.257.

20. Nouri-Khezrabad, M. Citric acid role and its migration effects in nano-bonded refractory castables / M. Nouri-Khezrabad, A. P. Luz, F. Golestani Fard [et al.] // Ceram. Int. ― 2014. ― Vol. 40, № 9A. ― P. 14523‒14527. doi: 10.1016/j.ceramint.2014.10.143.

21. Hiber, P. C. Influence of the dispersant structure on properties of electrstatically stabilized aqueous alumina suspensions / P. C. Hiber, T. J. Graule, L. J. Gauckler // J. Eur. Ceram. Soc. ― 1997. ― Vol. 17. ― P. 239‒249. doi.org/10.1016/S0955-2219(96)00151-3.

22. Oliveira, I. R. Hydration of CAC cement in a castable refractory matrix containing processing additives / I. R. Oliveira, F. S. Ortega, V. C. Pandolfell // Ceram. Int. ― 2009. ― Vol. 35. ― P. 1545‒1552.doi.org/10.1016/j.ceramint.2008.08.014.

23. Zhang, X. Effect of pH on rheology of aqueous Al2O3/SiC colloidal system / X. Zhang, Y. Zhang, H. Chen, L. Guo // J. Advanced Ceramics. ― 2014. ― Vol. 3, № 2. ― P. 125‒131. doi: 10.1007/s40145-014-0102-4.

24. Wang, Y. Effect of dispersants on the hydrate morphologies of spinel-containing calcium aluminate cement and on the properties of refractory castables / Y. Wang, B. Zhu, X. Li, P. Chen // Ceram. Int. ― 2016. ― Vol. 42, № 1A. ― Р. 711‒720. doi.org/10.1016/j.ceramint.2015.08.169.

25. Parker, K. M. Refractory calcium aluminate cements / K. M. Parker, J. H. Sharp // Transactions Journal British Ceramic Society. ― 1982. ― Vol. 81. ― P. 35‒42.

Supplementary files

For citation: Dutta R., Pal Choudhury D., Mukhopadhyay S. Improvement of rheological characteristics of carbon containing alumina-rich castable matrix by surfacetreated graphites. NOVYE OGNEUPORY (NEW REFRACTORIES). 2020;(6):37-40. https://doi.org/10.17073/1683-4518-2020-6-37-40

Refbacks

There are currently no refbacks.

ISSN 1683-4518 (Print)

Username
Password