INTERACTION OF LIQUID SLAG CaO-Al2O3-SiO2-MgO WITH THE Al2O3-BASED REFRACTORY CERAMICS

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Abstract

The sessile drop method was used to study the interaction of liquid slag CaO-Al2O3-SiO2-MgO with the Al2O3-based refractory material. A decrease in the wetting angle to 15° in the initial 10 min of the experiment and the reduction to 6° for the next 110 min were found. The microstructure and elemental mapping of cross sections of the slag and ceramics were examined. The phase corresponding to CaAl12O19 at the grain boundaries of aluminum oxide in the refractory ceramics was formed. Its fraction in the initial ceramics was about 9% mass., whereas after experiment it was close to 25% mass. This indicates a chemical interaction of slag with the ceramics. In the central zone of interaction, a slag penetration into the ceramics was observed.

About the authors

S. N Anuchkin

A.A. Baikov Institute of Metallurgy and Materials Science RAS

Email: AnuchkinSN@yandex.ru
Moscow, Russia

A. A Aleksandrov

A.A. Baikov Institute of Metallurgy and Materials Science RAS

Email: a.a.aleksandrov@gmail.com
Moscow, Russia

A. G Kanevskiy

A.A. Baikov Institute of Metallurgy and Materials Science RAS

Email: email@example.com
Moscow, Russia

O. A Komolova

A.A. Baikov Institute of Metallurgy and Materials Science RAS

Email: email@example.com
Moscow, Russia

K. V Grigorovich

A.A. Baikov Institute of Metallurgy and Materials Science RAS

Email: email@example.com
Moscow, Russia

A. B Mikhailova

A.A. Baikov Institute of Metallurgy and Materials Science RAS

Email: email@example.com
Moscow, Russia

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