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"Quantification of the liquidus surface of some iron oxide slags of industrial interest at constant CO2/CO ratio" Third International Symposium on Sulfide Smelting, TMS Annual Meeting 2002, Seattle, Washington, USA
Akira Yazawa ¹ ; Florian Kongoli ² ;
¹Tohoku University, 16-32, Niizaka, Aoba-ku, Sendai, 981-0934 JAPAN
²FLOGEN Technologies Inc,1255 Laird Blvd., Ste.388, Mont-Royal, Quebec, Canada

Keywords: Fluxes, Phase diagrams, slags, thermodynamics, modeling, solution, non-ferrous, pyrometallyrgy, Al2O3, MgO, CaO,. FeO, Fe2O3, smelting and converting, multicomponent systems

ABSTRACT

Liquidus surface of multicomponent slags is an important parameter in various smelting and converting processes. It helps not only to optimize the slag chemistry of current processes and their fluxing strategies, but also to determine the availability of new slags for more advanced technologies. In a series of our previous publications, the liquidus surface of some multicomponent iron oxide slags has been quantified at several constant oxygen potentials and the effect of the latter, ignored until that moment, was quantified along with the effect of some minor components. In this work, the liquidus surface of some iron oxide slags is quantified at constant CO2/CO ratios. This is a new convenient way for the quantitative description of the slag liquidus surface as well as of the effect of several fluxes, especially in those processes, such as slag solidification, where the oxygen potential changes continuously. This type of diagram also describes more dynamically the effect of oxygen potential, clarifies the relation between CO2/CO ratio and oxygen potential in terms of the liquidus surface (not widely understood by metallurgist today) and reduces the gap between laboratory work and industrial experience.

Cite this article as:
Akira Yazawa, Florian Kongoli (2002). "Quantification of the liquidus surface of some iron oxide slags of industrial interest at constant CO2/CO ratio". Third International Symposium on Sulfide Smelting, TMS Annual Meeting 2002, Seattle, Washington, USA.

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