Rotary Drum Furnace to Investigate the Performance of Refractories for Cement Rotary Kilns

C. Dannert, R. Simmat

Forschungsgemeinschaft Feuerfest e.V., 56203 Höhr-Grenzhausen/Germany

Revision

Volume 8, Issue 3, Pages 93 - 98

Abstract

Fabrication processes in cement rotary kilns change due to increased utilisation of alternative fuels, and the demands on refractories change with them. Refractory manufacturers respond by developing new and improved refractory materials. With the aim to support such development actions, a laboratory rotary drum furnace test was established in order to approach industrial clinker production as close as possible, with well-defined thermal and corrosive conditions. Using a multichannel burner system, synthesized fuel residues can be added to simulate the combustion of alternative fuels. Besides chemical corrosion by raw meal and fuel residues, the infiltration of clinker melt can now be investigated under more realistic conditions compared to standard test methods. In addition, the formation and stability of coating layers can be studied.

Keywords

laboratory testing, cement clinker, rotary drum furnace, refractories

References

[1] Environmental data of the German cement industry 2013. Verein Deutscher Zementwerke e.V., September 2014. Retrieved from www. vdz-online.de, 2016 [2] Bartha, P.; Södje, J.: Degradation of refractories in cement rotary kilns fired with waste fuels. CN refractories Special Issues 5 (2001) 62–71 [3] Vadász, P.; et al.: Influence of alternative fuels on the corrosion of basic refractory lining. Interceram 58 (2009) 130–135 [4] Harders, H.; Kienow, S.: Feuerfestkunde. Berlin 1960 [5] Bartha, P.: The cement rotary kiln and its refractory lining. Interceram Refractories Manual (2004) 14–16 [6] Simmat, R.; Knöpfelmacher A.: Einfluss der Aschen von Sekundärbrennstoffen auf die Viskosität der Klinkerschmelze und deren Auswirkung auf die feuerfeste Auskleidung der Sinterzone des Drehrohrofens. IGF 16905 N, final report, FGF e.V., 2016 [7] Simmat, R.; et al.: Rotary drum furnace for testing the stability of refractories used in cement rotary kilns at the presence of alternative fuel residues. UNITECR2015 – 14th Biennial Worldwide Congress, 2015

Copyright

Göller Verlag GmbH