Prethodno priopćenje

Hydraulic properties of ladle slags

J. Vlček ; VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
R. Švrčinová ; VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
J. Burda ; VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
M. Topinková ; VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
M. Klárová ; VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
H. Ovčačíková ; VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
D. Jančar ; VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
M. Velička ; VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic

Sažetak

The article presents results of examining of hydraulic properties of ladle slags formed during production of steel. The studied ladle slags were subjected to different cooling mode from the molten state. Based on the ability of the slag react with the water was assessed their hydraulic activity. The hydraulic properties are caused by the presence of minerals dicalcium silicate, tricalcium aluminate, mayenite, brownmillerite and dicalcium ferite. The emergence of required hydrating phases in the ladle slags is conditioned by a sufficient CaO content and their cooling rate. The contact the slag with water during processing and their ageing has a negative effect. The experiment has shown that the phase transformation of the mineral dicalcium silicate which occurs during cooling of the ladle slags cause their volume instability.

Ključne riječi

steel slag; ladle slag; hydraulic properties; calorimetry

Hrčak ID:

153630

URI

https://hrcak.srce.hr/153630

Datum izdavanja:

1.7.2016.

Posjeta: 1.685 *