Articles
All articles | Recent articles
Influence of MgAl2O4 Spinel Addition on Properties of Alumina-Chrome Refractory Prepared with Alumina-Chrome Slag
J. Wu, J. Liu, R. Li, Q. Zhen
Research Center of Nano Science and Technology, Shanghai University, Shanghai 200444, China
received September 27, 2016, received in revised form October 31, 2016, accepted November 26, 2016
Vol. 7, No. 4, Pages 447-454 DOI: 10.4416/JCST2016-00076
Abstract
Alumina-chrome refractory was developed using alumina-chrome slag of different grades (5 ∼ 3 mm, 3 ∼ 1 mm, 0.088 mm and 0.045 mm), with added micron-grade MgAl2O4 spinel powders. Batch materials were milled, pressed and sintered at 1500 °C with 22 h soaking. The refractory with 5 wt% MgAl2O4 exhibited the best properties in terms of bulk density and apparent porosity. In all the refractory samples, new phases were formed as a result of slag-refractory and copper-refractory interaction. With the addition of MgAl2O4 spinel, the corrosion resistance of the alumina-chrome refractory was improved remarkably.
Download Full Article (PDF)
Keywords
Alumina-chrome refractory, alumina-chrome slag, MgAl2O4 spinel, slag corrosion, crude copper corrosion
References
1 Nath, M., Sen, S., Banerjee, K., Ghosh, A., Tripathi, H.S.: Densification behavior and properties of alumina-chrome ceramics: effect of TiO2, Ceram. Int., 39, 227 – 232, (2013).
2 Nath, M., Dana, K., Gupta, S., Tripathi, H.S.: Hot corrosion behavior of slip-cast alumina-chrome refractory crucible against molten glass, Mater. Corros., 65, 742 – 747, (2014).
3 Cooper, S.A., Nicholson, P.S.: Influence of glass redox conditions on the corrosion of fusion-cast chrome-alumina refractories, Am. Ceram. Soc. Bull., 59, 715 – 717, (1980).
4 Edme, E., Poirier, J., Bouchetou, M.L., Arnouil, J.P.: Improvement of chrome-alumina refractory lining in vitrification units for the treatment of fly ashes and asbestos hazardous wastes. In: InterCeram: International Ceramic Review. Expert Fachmedien GmbH, Düsseldorf, Germany, 2011.
5 Hirata, T., Morimoto, T., Ohta, S., Uchida, N.: Improvement of the corrosion resistance of alumina-chrome ceramic materials in molten slag, J. Eur. Ceram. Soc., 23, 2089 – 2096, (2003).
6 Popov, O.N., Frolova, V.P., Kirilenko, V.I., Tokarev, V.D.: Chrome-corundum refractory in the packing for a glass furnace regenerator, Glass. Ceram., 48, 13 – 17, (1991).
7 Cook, R.S., Fausey, W.H.: Casting of a chrome-alumina monolithic lining for melting insulation fiberglass in a cold-top electric melter, M. G. Wheeler, D. L. Smathers and D. G. Patel, Ceram. Eng. Sci. Proc., 24, 253 – 270, (2003).
8 Chen, D., Huang, A., Gu, H., Zhang, M., Zhang, Z.: Corrosion of Al2O3-Cr2O3 refractory lining for high-temperature solid waste incinerator, Ceram. Int., 41, 14748 – 14753, (2015).
9 Bonar, J.A., Kennedy, C.R., Swaroop, R.B.: Coal-ash slag attack and corrosion of refractories, Am. Ceram. Soc. Bull., 59, 473 – 478, (1980).
10 Mafliet, A., Lotfian, S, Scheunis, L., Petkov, V., Pandelaers, L., Jones, P. T., Blanpain, B.: Degradation mechanisms and use of refractory linings in copper production processes: A critical review, J. Eur. Ceram. Soc., 34, 849 – 876, (2014).
11 Petkov, V., Jones, P.T., Boydens, E., Blanpain, B., Wollants, P.: Chemical corrosion mechanisms of magnesia-chromite and chrome-free refractory bricks by copper metal and anode slag, J. Eur. Ceram. Soc., 27, 2433 – 2444, (2007).
12 Tripathi, H.S., Das, S.K., Ghosh, A.: Effect of compositional variation on the synthesis of magnesite-chrome composite refractory, Ceram. Int., 30, 911 – 915, (2004).
13 Hirata, T., Morimoto, T., Morimoto, A., Uchida, N.: Corrosion resistance of alumina-chromia ceramic materials against molten slag, Mater. Trans., 43, 2561 – 2567, (2002).
14 Gehre, P., Aneziris, C.G., Berek, H., Parr, C., Reinmoller, M.: Corrosion of magnesium aluminate spinel-rich refractories by sulphur-containing slag, J. Eur. Ceram. Soc., 35, 1613 – 1620, (2015).
15 Pilli, V., Sarkar, R.: Effect of spinel content on the properties of Al2O3-SiC-C based trough castable, Ceram. Int., 42, 2969 – 2982, (2016).
16 Braulio, M.A.L., Rigaud, M., Buhr, A., Parr, C., Pandolfelli, V. C.: Spinel-containing alumina-based refractory castables, Ceram. Int., 37, 1705 – 1724, (2011).
17 Wang, W.X., Xing, J.D., Jin, Z.X.: Chemical reaction of Cu2O-al system in preparation of Al2O3/Cu composite, Rare. Metal. Mater. Eng., 36, 679 – 682, (2007).
18 Yin, Y., Liang, Y., Ge, S., Ge, Z., Nie, J., Lu, J.: Pore evolution and its effect on slag resistance of Al2O3-SiC-C castables, J. Ceram. Soc. Jpn., 121, 873 – 879, (2013).
Copyright
Göller Verlag GmbH
