RESEARCH ON HIGH-TEMPERATURE DECARBURIZATIONOF ALUM- PERICLASE-CARBON LADLE REFRACTORIES
https://doi.org/10.17073/0368-0797-2014-12-24-28
Abstract
The article examines the results of the kinetics studies of decarburization of alum-periclase-carbon refractories, which are widespread at the metallurgical enterprises to perform the working layer of casting ladle linings. The article describes the dependence of decarburization depth on the time – temperature factors, as well as on the composition of the atmosphere. From the point of view of durability of alum-periclase-carbon resinbinded refractories not only the porosity is important but also the presence of flaked graphite and carbon particles in the surface layers, because they reduce the surface wettability of the refractory by metal and slag, as well as reduce the uniformity of the thermal and mechanical properties of refractories by the section. The difference of the compositions of de-carbonized and the base layer of refractories can result in a formation of cracks and spallings caused by thermal stresses during heating and cooling of the lining. The influence of temperature and atmospheric composition on porosity of alumpericlasecarbon ladle refractories is studied. The studies show that hightemperature exposure leads to an increase of the porosity of the material. Heat treatment of refractories in oxygen-free atmosphere eliminates the decarburization, however, water absorption and porosity of the refractory changes slightly.
About the Authors
E. V. Protopopov
Siberian State Industrial University (42, Kirova str., Novokuznetsk, Kemerovo Region, 654007, Russia)
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor
M. V. Temlyantsev
Siberian State Industrial University (42, Kirova str., Novokuznetsk, Kemerovo Region, 654007, Russia)
Russian Federation
Dr. Sci. (Eng.), Professor
Russian Federation
Dr. Sci. (Eng.), Professor
E. M. Zapol’skaya
Siberian State Industrial University (42, Kirova str., Novokuznetsk, Kemerovo Region, 654007, Russia)
Russian Federation
Postgraduate
Russian Federation
Postgraduate
K. E. Maksakova
Siberian State Industrial University (42, Kirova str., Novokuznetsk, Kemerovo Region, 654007, Russia)
Russian Federation
Postgraduate
Russian Federation
Postgraduate
V. A. Degtyar’
Siberian State Industrial University (42, Kirova str., Novokuznetsk, Kemerovo Region, 654007, Russia)
Russian Federation
Dr. Sci. (Ch.), Professor
Russian Federation
Dr. Sci. (Ch.), Professor
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Review
For citations:
Protopopov E.V., Temlyantsev M.V., Zapol’skaya E.M., Maksakova K.E., Degtyar’ V.A. RESEARCH ON HIGH-TEMPERATURE DECARBURIZATIONOF ALUM- PERICLASE-CARBON LADLE REFRACTORIES. Izvestiya. Ferrous Metallurgy. 2014;57(12):24-28. (In Russ.) https://doi.org/10.17073/0368-0797-2014-12-24-28
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