New mold slag compositions for the continuous casting of soft steels

Research output: Contribution to conferenceAbstractpeer-review


Mold slags have significant influence on product quality in the continuous casting of steels. Horizontal heat flux is controlled by the formation of solid phases within the slag film. One of these is cuspidine, which contains Fluorine being responsible for machine corrosion and regarded as a health hazard. Thus, Fluorine free mold slags have to be developed showing the same properties regarding lubrication and solidification behavior. Based on FactSage calculations slags for soft steels were tested via quenching the liquefied slag onto a steel plate. Mainly glassy solidifying samples were further investigated regarding viscosity and crystallization behavior. Promising results were obtained for a slag within the Na2O-CaO-SiO2 system after the addition of MgO and TiO2. Furthermore, based on the results obtained from various slag compositions within the system of Na2O, K2O, CaO, MgO, TiO2, Al2O3, B2O3, SiO2, MnO and FeO effects of oxides with considerable influence on crystallization tendency were derived.
Original languageEnglish
Publication statusPublished - 2021
EventThe 11th International Conferenece on Molten Slags Fluxes and Salts - Virtual, Soul, Korea, Republic of
Duration: 21 Feb 202125 Jun 2021


ConferenceThe 11th International Conferenece on Molten Slags Fluxes and Salts
Country/TerritoryKorea, Republic of
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