Lowering of the Refractory Corrosion in High-temperature Processes
Technical University of Mining and Technology Freiberg (TUBAF), Institute of Ceramic, Glass and Construction Materials (IKGB), TU Bergakademie Freiberg, 09599 Freiberg/Germany
Revision
Volume 6, Issue 4, Pages 73 - 75
Abstract
Corrosion of refractories is a problem in any kind of high-temperature process. Since 2008, a new technology for reducing refractory corrosion has been developed at TU Bergakademie Freiberg/DE. With this surfacetreatment technology, wear of refractories has been reduced by up to 90 %. In a range of laboratory tests with different kinds of refractory and melt (e.g. finger tests, crucible tests), the effects of the technology were observed. The reason for the reduced interaction between the refractory material and melt was the change in the surface tension and viscosity of the melt in the boundary layer via treatment of the bricks. The different treatments can be used on every kind of porous refractory brick, regardless of manufacturer. After using the surface treatment technology for porous refractories, the bricks show the same corrosion behavior as fused cast bricks. After a range of industrial tests, the results at laboratory scale were confirmed, resulting in considerable savings for operators of high-temperature plants.
Keywords
refractory corrosion, glass melt, finger test, surface treatment technology
References
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