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Dispersing (Deflocculating) Aluminas

Refractories and Industrial Ceramics Aims and scope

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Abstract

The rheological properties of aqueous suspensions of a reactive alumina and high-alumina cements have been studied, and a method for evaluating the thinning effect due to agents used to deflocculate ceramic casting systems has been developed; a classification of thinning agents is proposed. Alumina dispersants make it possible to decrease the moisture content of Al2O3 suspensions by 50 – 60 rel.% and increase their volume concentration from 0.50 to 0.65. The characteristics of dispersing aluminas used for the thinning (deflocculation) of new refractory castables containing Al2O3 (76 – 96%) and organic deflocculants are given. Suspensions based on four types of dispersants (with a moisture content of 19 – 25%) exhibiting a thixotropic flow behavior are considered.

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REFERENCES

  1. Yu. E. Pivinskii, Unshaped Castables. Vol. 1. General Technology [in Russian], Teploenergetik, Moscow (2003).

    Google Scholar 

  2. Yu. E. Pivinskii, Ceramic and Refractory Materials. Selected Works, Vol. 2 [in Russian], Stroiizdat, St. Petersburg (2003).

    Google Scholar 

  3. S. Banerjee, Monolithic Refractories, World Scientific Publishing Co., Singapore-New Jersey-London-Hong-Kong (1998).

    Google Scholar 

  4. Yu. E Pivinskii, Yu. N. Ermak, A. V. Cherevatova, and N. A. Shapovalov, “The effect of thinning agents on rheological and technological properties of bauxite HCBS (Highly Concentrated Ceramic Binding Suspensions)” Novye Ogneupory, No. 5, 91-97 (2003).

    Google Scholar 

  5. Yu. N. Pivinskii, D. A. Dobrodon, Yu. N. Ermak, and A. V. Cherevatova, “The effect of thinning agents on properties of high-alumina ceramic castables,” Novye Ogneupory, No. 6, 27-33 (2003).

    Google Scholar 

  6. P. G. Vasilik, “New dispersants (deflocculants) for the production of refractory castables,” Novye Ogneupory, No. 8, 28-31 (2003).

    Google Scholar 

  7. A. R. Studart, V. C. Pandonfelli, and J. Jallo, “Dispersants for high-alumina castables,” Am. Ceram. Soc. Bull., 81(4), 36–44 (2002).

    Google Scholar 

  8. A. R. Studart, W. Zong, and R. Pileggi, “Processing of zero-cement self-flow alumina castables,” Am. Ceram. Soc. Bull., 77(12), 60–66 (1998).

    Google Scholar 

  9. I. R. Oliveira, P. Sepulveda, and V. C. Pandofelli, “Deflocculation of Al2O3-SiC Suspension,” Am. Ceram. Soc. Bull., 80(2), 47–53 (2001)

    Google Scholar 

  10. A. Nagosoe, S. Oota, K. Onizuka, et al., “Dispersion and fluidity of alumina powder suspension,” Taikabutsu Refr., 50(7), 389–394 (1998).

    Google Scholar 

  11. J.W. Kriechbaum, O. Laurich, D. Van Jarsel, et al., “The matrix advantage system. New raw materials for low moisture self-leveling and vibration placed alumina and magnesium aluminate spinel castables,” in: Proceedings of Unitecr'97, New Orleans, (1997), pp. 645–655.

  12. D. Van Garsel, J. O. Laurich, and A. Boor, “Synthetic raw materials-a clue to advanced technologies in the production of refractories,” in: Proceedings of Int. Conf. “Physical chemistry and technology of oxide-silicate materials,” Vestnik UGTUUPI, No. 1 [in Russian], Ekaterinburg (2000), pp. 13–26.

  13. I. Stinnessen, A. Boor, and R. Kockegey-Lorenz, “High-purity high-alumina cement: production and properties,” Novye Ogne-upory, No. 8, 22-27 (2003).

    Google Scholar 

  14. Dispersing Alumina. Product Data, Alcoa World Chemicals.

  15. H. H. Pohland, Aluminium Oxide. Production, Properties, Applications, Lansberg (1999).

  16. Calcium Aluminate Cements. Product Data, Alcoa Industrial Chemicals. Europe.

  17. Calcined and Reactive Aluminas for Refractories. Product Data, Alcoa Industrial Chemicals. Europe.

  18. Ch. Parr, R. Roesky, W. Yongting, et al., “High performance calcium aluminate cements for corrosion resistant castables. China refractories seminar,” Technol. Markets (2001).

  19. Magnesium Aluminate Spinels. Product Data, Alcoa Industrial Chemicals. Europe.

  20. M. Jaycock and G. Parfitt, Chemistry of Interfaces, Ellis Horwood, Chichester (U.K.) (1981).

    Google Scholar 

  21. R. I. Pileggi, A. R. Stydart, M. D. Innocetini, et al., “High-performance Refractory Castables,” Am. Ceram. Soc. Bull., No. 6, 37–42 (2002).

    Google Scholar 

  22. V. G. Batrakov, Methods [in Russian], Stroiizdat, Moscow (1990).

    Google Scholar 

  23. Yu. T. Bazhenov, The Concrete Technology [in Russian], Higher-School Building Association, Moscow (2002).

    Google Scholar 

  24. Yu. E. Pivinskii, Theoretical Aspects in the Technology of Ceramics and Refractories. Selected Works, Vol. 1 [in Russian], Stroiizdat, St. Petersburg (2003).

    Google Scholar 

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Authors and Affiliations

  1. Kerambet R&D Joint-Stock Co., Belgorod, Russia

    Yu. E. Pivinskii, Pav. V. Dyakin & P. V. Dyakin

  2. St. Petersburg State Technological Institute (Technical University), St. Petersburg, Russia

    Yu. E. Pivinskii, Pav. V. Dyakin & P. V. Dyakin

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  1. Yu. E. Pivinskii
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  2. Pav. V. Dyakin
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Pivinskii, Y.E., Dyakin, P.V. & Dyakin, P.V. Dispersing (Deflocculating) Aluminas. Refractories and Industrial Ceramics 45, 201–209 (2004). https://doi.org/10.1023/B:REFR.0000036730.62623.f7

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  • DOI: https://doi.org/10.1023/B:REFR.0000036730.62623.f7

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