Density and surface tension of the systems CaO-FeO-Fe2O3-MgO, CaO-FeO-Fe2O3-ZnO and CaO-Fe2O3-Cu2O

• Authors: Pavol Vadász , Milan Havlík , Vladimír Daněk
• Languages of publication: EN

Abstracts

EN

The density and surface tension of melts of the systems CaO-FeO-Fe2O3 MgO at the temperature 1623 K, CaO-FeO-Fe2O3-ZnO at 1573 K, and CaO-Fe2O3-Cu2O at 1573 K were determined using the maximum bubble pressure method. The molar volume, the excess molar volume, and the excess surface tension were calculated on the basis of the obtained data. From these properties information on the interactions of components and possible chemical reactions between them was obtained. Due to the absence of silica and the low concentration of other network-forming oxides, only isolated FeO45− tetrahedra and the CaO·FeO ionic pairs are formed in these basic melts, the donor of the oxygen atoms being either CaO, FeO, or both CaO+FeO oxides. Even the observed ternary interactions may be attributed to the formation of the anions FeO45− only.

Keywords

EN

Density; surface tension; pyrometallurgical slags; copper production

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2006
• Volume: 4
• Issue: 1
• Pages: 174-193

Dates

published

1 - 3 - 2006

online

1 - 3 - 2006

Contributors

author

Pavol Vadász

• Institute of Metallurgy and Materials, Technical University of Košice, 043 85, Košice, Slovak Republic

author

Milan Havlík

• Institute of Metallurgy and Materials, Technical University of Košice, 043 85, Košice, Slovak Republic

author

Vladimír Daněk

• Institute of Inorganic Chemistry, Slovak Academy of Sciences, 845 36, Bratislava, Slovak Republic

References

• [1] K. Tomášek, L. Bodnár and J. Holéczy: “Hustota troskových sústav Fe-O-SiO2-X a jej vzt’ah k povrchovému napätiu (Density of the Slag Systems Fe-O-SiO2-X and its Relation to the Surface Tension)”, Hutnické Listy, Vol. 30, (1975), p. 136.
• [2] A.V. Vanjukov and V.Ja. Zajcev: Šlaky i štejny cvetnoj metallurgii (Slags and Rocks in Color Metallurgy), Izd. Metallurgija, Moskva, 1969.
• [3] A.V. Vanjukov and V.Ja. Zajcev: Šlaky i štejny cvetnoj metallurgii (Slags and Rocks in Color Metallurgy), Izd. Metallurgija, Moskva, 1969.
• [4] P.I. Bakardzhiev: Fiziko-chimičeskije svojstva konverternych šlakov (Physic-Chemical Properties of Converter Slags), Thesis (PhD), Moscow Institute of Steel and Slags, Moscow, 1965.
• [5] P. Vadász, M. Havlík and V. Daněk: “Density and Surface Tension of Calcium-Ferritic Slags I. The Systems CaO-FeO-Fe2O3-SiO2 and CaO-FeO-Fe2O3-Al2O3”, Canad. Metall. Quart., Vol. 39, (2000), pp. 143–152. [Crossref]
• [6] S. Sumita, K. Morinaga and T. Yanagase: “Physical Properties and Structure of Binary Ferrite Melts”, Trans. Japan Inst. Metals, Vol. 24(1), (1983), pp. 35–41.
• [7] A. Yazawa, Y. Takeda and Y. Waseda: “Thermodynamic Properties and Structure of Ferrite Slag and their Process Implications”, Can. Metall. Quart., Vol. 20, (1981), p. 192.
• [8] T. Myslivec: Fyzikálne chemické základy ocelářství (Physico-Chemical Fundamentals of Steelmaking), SNTL, Prague, 1971.
• [9] A.F. Wells: Structure of Inorganic Compounds, 5th ed., Oxford, 1986.
• [10] T. Myslivec: Fyzikálně chemickě základy ocelářství (Physico-Chemical Fundamentals of Steelmaking), SNTL Praha, 1971.
• [11] A. Yazawa and M. Eguchi: Equilibrium Studies on Copper Slags Used in Continuous Converting. Extractive Metallurgy of Copper, J.C. Yannopoulos and J.C. Agarwel (Eds.), TSM-AIME, 1976, p. 3-20.
• [12] M. Nagamori, Y. Takeda and A. Yazawa: “Statistical Thermodynamics of Ferrite Slags”, Metal. Rev. of Mining and Metal. Inst. Japan, Vol. 1, (1989).
• [13] E.A. Guggenheim: Thermodynamics, 6th ed., North-Holland Publishing Comp., Amsterdam, 1977, p. 210.
• [14] V. Daněk and I. Proks: “Concentration Dependence of Surface Tension of Molten Salts Mixtures”, In: H. Wendt (Ed.): Molten Salt Chemistry and Technology, Vol. 5, Trans Tech Publications, Zürich, Switzerland, 1998, p. 205.
• [15] T. Ličko and V. Daněk: “Densities of Melts in the System CaSiO3-CaMgSi2O6-Ca2MgSi2O7”, Phys. Chem. Glasses, Vol. 23, (1982), p. 67.
• [16] T. Ličko, V. Daněk and Z. Pánek: “Densities of Melts in the System CaO-FeOFe2O3-SiO2”, Chem. Papers, Vol. 39, (1985), p. 599–605.
• [17] V. Daněk and T. Ličko: “Surface Adsorption of Silicon Dioxide in Molten Silicate Systems”, Chem. Zvesti, Vol. 36, (1982), p. 179.
• [18] V. Daněk, T. Ličko and Z. Pánek: “Surface Adsorption of SiO2 in Melts of the System CaO-FeO-Fe2O3-SiO2”, Chem. Papers, Vol. 39, (1985), p. 459.
• [19] F.D. Richardson: Physical Chemistry of Melts in Metallurgy, Vol. 2. Academic Press, London, 1974, p. 441.
• [20] J. Fedor, P. Vadász and L’. Bobok: “Physical Properties of Ferrite-Calcium slags”, Transactions of Technical University of Košice, Vol. 1, (1991), p. 63.
• [21] P. Herasymenko and G.E. Speight: “Ionic Theory of Slag-Metal Equilibria”, J. Iron Steel Inst., (1950), p. 290.
• [22] L’. Molnár, P. Vadász and M. Kozlovský: “Study of Interactions at the Slag-Basic Refractory Boundary”, Ceramics-Silikáty, Vol. 3, (1993), p. 1.
• [23] P. Vadász, K. Tomášek, L’. Rabatin and P. Popovič: “Dynamické korózne skúšky magnéziových, magnéziouchromitých a magnéziouhlíkatých stavív (Dynamic Corrosion Tests of Magnesia, Magnesia-Chromium, and Magnesia-Carbon Refractories)”, Hutnické listy, Vol. 11, (1995), p. 24.
• [24] J. Fedor: Štúdium viskozity a konduktivity troskovej sústavy Fe 2 O 3 -FeO-CaO (The Study of Viscosity and Conductivity of the Slag System Fe 2 O 3 -FeO-CaO), Thesis (PhD), Inst. Metal. Mater., Faculty of Metallurgy, Technical University of Košice, 1990.
• [25] J. Fedor, L’. Bobok and P. Vadász: “Viskozita troskových tavenín sústavy Fe2O3-CaO (Viscosity of Slag Melts of the System Fe2O3-CaO)”, Hutnické listy, Vol. 9-10, (1991), p. 64.

Identifiers

DOI

10.1007/s11532-005-0014-9