Abstract
A comparison among various sol-gel bonding systems has been done for high alumina castable refractory. Four different sol systems, namely, alumina, boehmite, mullite, and spinel, have been synthesized and used individually as sole binder in high alumina castable system with particle size distribution coefficient of 0.23 as per Dinger and Funk model. The castable compositions were processed conventionally and properties were evaluated after heat treatment at different temperatures. These developed sol-containing compositions were also compared against commercially available silica sol-containing composition prepared under exactly similar conditions. Mullite sol-bonded composition showed higher cold strength, whereas spinel sol resulted in better hot properties. Improved thermal shock resistance against commercial sol binder was observed in spinel and mullite sol-containing compositions, which may be associated with the microcracking effect produced from the thermal expansion mismatch. The slag corrosion resistance was also observed better for the spinel sol-containing composition. The commercial silica sol-bonded compositions showed higher strength due to its higher solid content but resulted in inferior hot and corrosion properties.
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References
Li, Z., Ye, G.: Bonding and recent progress of monolithic refractories. Interceram. 41(3), 169–173 (1992)
Parker, K.M., Sharp, J.H.: Refractory calcium aluminate cements. Trans Brit Ceram. 81, 35–42 (1982)
Banerjee, S.: Recent developments in monolithic refractories. Am Ceram Soc Bull. 77(10), 59–63 (1998)
Pilate, P., Tirlocq, J., Cambier, F.: Refractory castables: an overview. Ceramic Forum International. 84(6), 43–49 (2007)
Ishikawa, M.: Refractory castables. Taikabutsu. 51(4), 170–178 (1999)
Ismael, M.R., Salomao, R., Pandolfelli, V.C.: A combined binding system for refractory castables based on colloidal silica and hydratable alumina. Am Ceram Soc Bull. 86(9), 58–61 (2007)
De Sa, R.G. and Lee, W. E.: Nanotechnology for the refractories industry—a foresight perspective. The Refractories Engineer. 12–19 (2007).
Garbers-Craig, A.M.: Presidential address: how cool are refractory materials? J South Afr Inst Min Metall. 108(9), 491–506 (2008)
Antonovic, V., Pundiene, I., Stonys, R., Cesniene, J., Keriene, J.: A review of the possible applications of nanotechnology in refractory concrete. J Civ Eng Manag. 16(4), 595–602 (2010)
Braulio, M.A.L., Tontrup, C., Medeiros, J., Pandolfelli, V.C.: Colloidal alumina as a novel castable bonding system. Refractories World-Forum. 3(3), 135–141 (2011)
Anderson, M.: Better refractories through nanotechnology. Ceramic Industry Magazine. 155(10), 29–35 (2005)
Lipinski, T.R., Drygalska, E., Tontrup, C.: The influence of additions of nanostructured Al2O3 powder on the high temperature strength of high alumina refractories. In: Proceedings Of UNITECR-09. Pp.3, Salvador, Brazil, (2009).
T.R. Lipinski, C. Tontrup, The use of nano-scaled alumina in alumina-based refractory materials. In: Proceedings Of UNITECR -07. Pp.391–393, Dresden, Germany, (2007).
Braulio, M.A.L., Castro, J.F.R., Pagliosa, C., Bittencourt, L.R.M., Pandolfelli, V.C.: From macro to nano magnesia: designing the in situ spinel expansion. J Am Ceram Soc. 91(9), 3090–3093 (2008)
Daspoddar, D., Das, S.K.R., Daspoddar, P.K.: Effect of silica sol of different routes on the properties of low cement castables. Bull Mater Sci. 26(2), 227–231 (2003)
Ismael, M.R., Ramal Jr., F.T., Pandolfelli, V.C.: Silica sol as a binder agent for refractory castables. Cerâmica. 52, 82–87 (2006)
Ismael, M.R., Valenzuela, F.A.O., Polito, L.A., Pandolfelli, V.C.: Thermo-mechanical properties of colloidal silica-containing castable. Cerâmica. 53, 314–318 (2007)
Yaghoubi, H., Sarpoolaky, H., Golestanifard, F., Souri, A.: Influence of nano silica on properties and microstructure of high alumina ultra-low cement refractory castables. Iranian Journal Of Materials Science & Engineering. 9(2), 50–58 (2012)
Souri, A., Kashani Nia, F., Sarpoolaky, H.: Improving thermo-mechanical properties of tabular alumina castables via using nano structured colloidal silica. Nanomaterials: Applications And Properties (NAP-2011). 2(2), 254–259 (2011)
Ismael, M.R., Anjos, R.D., Salomao, R., Pandolfelli, V.C.: Colloidal silica as a nanostructured binder for refractory castables. Refractories Applications And News. 11(4), 16–20 (2006)
Das, S., Sarkar, R., Mondal, P., Mukherjee, S.: No cement high alumina self-flow castable. Am Ceram Soc Bull. 82(2), 55–59 (2003)
Sarkar, R., Mukherjee, S., Ghosh, A.: Gel bonded Al2O3 – SiC – C based blast furnace trough castable. Am Ceram Soc Bull. 85(5), 9101–9105 (2006)
Sarkar, R., Das, S.K.: Effect of distribution coefficient on gel bonded high alumina castable. IRMA Journal. 43(1), 31–36 (2010)
Sarkar, R., Satpathy, A.: High alumina self-flow castable with different binders. Refractories World Forum. 4(4), 98–102 (2012)
Sarkar, R., Kumar, A., Das, S.P., Prasad, B.: Silica sol bonded high alumina castable: effect of reduced sol. Refractories World Forum. 7(2), 83–87 (2015)
Sarkar, R., Srinivas, J.: Effect of cement and sol combined binders on high alumina refractory castables. Refractories World Forum. 8(4), 73–78 (2016)
Mukhopadhyay, T.K., Sarkar, R., Das, S.K., Ghosh, S., Ghatak, S.: Effect of synthetic mullite aggregate prepared by hydroxyl-hydro gel method on sol bonded clay based mullite castable. Am Ceram Soc Bull. 84(11), 9101–9106 (2005)
Das, S.K., Mandal, P.K., Sarkar, R.: Effect of synthetic aggregates on alumina castable. Am Ceram Soc Bull. 82(10), 9101–9106 (2003)
Amutha Rani, D., Gnanam, F.D.: Sol gel mullite as the self-bonding material for refractory applications. Ceram Int. 26(4), 347–350 (2000)
Mandal, B., Sarkar, R., Daspoddar, P.K.: Effect of different mullite precursors on the properties of low cement high alumina castable. Ind Ceram. 31(3), 217–222 (2011)
Mukhopadhyaya, S., Daspoddar, P.K.: Effect of preformed and in-situ spinels on microstructure and properties of a low cement refractory castable. Ceram Int. 30(3), 369–380 (2004)
Yilmaz, E., Yilmaz, S.: Investigation of properties of boehmitic sol coated graphite added alumina-low cement castables. J Ceram Process Res. 11(1), 56–60 (2010)
Mukhopadhyay, S., Dutta, S., Majumdar, M., Kundu, A., Das, S.K.: Synthesis and characterization of alumina bearing sol for application in refractory castables. Ind Ceram. 20(2), 88–92 (2000)
Mukhopadhyaya, S., Das, S.K.: Role of alumina sol on the physical properties of low cement castables. Transactions of the Indian Ceramic Society. 59(3), 68–74 (2000)
Mukhopadhyay, S., Mahapatra, S., Mukherjee, P., Dasgupta, T., Das, S.K.: Effect of alumina sol in no-cement refractory castables. Transactions Of The Indian Ceramic Society. 60(2), 63–67 (2001)
Mukhopadhyay, S., Ghosh, S., Mahapatra, M.K., Mazumder, R., Barick, P., Gupta, S., Chakraborty, S.: Easy-to-use mullite and spinel sols as bonding agents in a high-alumina based ultra low cement castable. Ceram Int. 28(7), 719–729 (2002)
Ghosh, S., Majumdar, R., Sinhamahapatra, B.K., Nandy, R.N., Mukherjee, M., Mukhopadhyay, S.: Microstructures of refractory castables prepared with sol–gel additives. Ceram Int. 29(6), 671–677 (2003)
Mukhopadhyay, S., Mahapatra, M.K., Mondal, P.K., Das, S.K.: Alumina and silica sols as binders in a typical ULC castable. Transactions of the Indian Ceramic Society. 62(2), 106–111 (2003)
Cao, F., Long, S., Wu, X., Telle, R.: Properties of sol–gel bonding castables. Key Eng Mater. 336-338, 1484–1487 (2007)
Han, K. R., Park, S. W., Kim, C. S. and Yang, J. O.: Unshaped refractory composition added with alumina sol binder. Int. Patent. WO 2011/115352 (2011).
Han, K. R., Park, S. W., Kim, C. S. and Yang, J. O.: Alumina bonded unshaped refractory and manufacturing method thereof. Int. Patent WO 2011/115353 (2011).
Braulio, M.A.L., Morbioli, G.G., Medeiros, J., Gallo, J.B., Pandolfelli, V.C.: Nano-bonded wide temperature range designed refractory castables. J Am Ceram Soc. 95(3), 1100–1104 (2012)
Singh, A.K., Sarkar, R.: Synthesis and characterization of alumina sol and its use as binder in no cement high-alumina refractory castables. Int J Appl Ceram Technol. 12(S3), E54–E60 (2015)
Singh, A.K., Sarkar, R.: High alumina castables: effect of alumina sols and distribution coefficients. Trans Ind Ceram Soc. 74(4), 225–231 (2015)
Singh, A.K., Sarkar, R.: Nano mullite bonded refractory castable composition for high temperature applications. Ceram Int. 42(11), 12937–12945 (2016)
Singh, A.K., Sarkar, R.: Development of spinel sol bonded high pure alumina castable composition. Ceram Int. 42(15), 17410–17419 (2016)
Dinger, D.R., Funk, J.E.: Particle packing III: discrete versus continuous particle sizes. Interceram. 41(5), 332–334 (1992)
Singh, A.K., Sarkar, R.: Effect of binders and distribution coefficient on the properties of high alumina castables. J Aust Ceram Soc. 50(2), 93–98 (2014)
Parr, C. and Wohrmeyer, C.: The advantages of calcium aluminate cement as a castable bonding system. In: Proceedings of St Louis Section Meeting of American Ceramic Society, USA (2006).
Braulio, M.A.L., Rigaud, M., Buhr, A., Parr, C., Pandolfelli, V.C.: Spinel-containing alumina-based refractory castables. Ceram Int. 37(6), 1705–1724 (2011)
Zhang, S., Lee, W. E.: Spinel-containing refractories. In: Refractories Handbook, Pp.215–258, C.A. Schacht, Marcel Dekker, Monticello (2004).
Chandradass, J., Bae, D.S., Kim, K.H.: Synthesis of calcium hexa-aluminate (Caal12o19) via reverse micelle process. J Non-Cryst Solids. 355(48–49), 2429–2432 (2009)
Nagaoka, T., Tsugoshi, T., Hotta, Y., Yasuoka, M., Watari, K.: Forming and sintering of porous calcium hexa-aluminate ceramics with hydraulic alumina. J Mater Sci. 41(22), 7401–7405 (2006)
Mukhopadhyay, S., Pal, T.K., DasPoddar, P.K.: Improvement of corrosion resistance of spinel-bonded castables to converter slag. Ceram Int. 35(1), 373–380 (2009)
Lee, W. E.: Theory experiment and practice of slag attack of refractories. Tehran International Conference on Refractories, 4–6 May (2004).
Acknowledgments
The authors thankfully acknowledge Mr. S. Mukherjee and Mr. S. Chatterjee for their support regarding raw materials and the staff of the Department of Ceramic Engineering, NIT Rourkela for their support and help regarding different experimentations of the work.
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Singh, A.K., Sarkar, R. High alumina castables: a comparison among various sol-gel bonding systems. J Aust Ceram Soc 53, 553–567 (2017). https://doi.org/10.1007/s41779-017-0067-1
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DOI: https://doi.org/10.1007/s41779-017-0067-1