Das System MnO(–FeO)–MgO(–CaO) und seine Verteilungsgleichgewichte mit flüssigem Mangan und Eisen‐Mangan‐Legierungen

Abstract

Die Systeme MnO–MgO und MnO–CaO, Elektronen‐ und Röntgenbeugungsuntersuchungen, Schmelzpunkte der reinen Stoffe, experimentelle Bestimmung der Soliduslinien, Berechnung der Liquiduslinien; das System MnO–MgO–CaO. Sauerstofflöslichkeit von Mangan und Eisen‐Mangan‐Schmelzen unter MnO‐Schlacken verschiedener Zusammensetzung, Manganseite des Systems Mn–O, Aktivität des MnO in MgO‐haltigen MnO‐Schlacken; das System MnO–FeO–MgO.

Aluminum Deoxidation Equilibria in Liquid Iron: Part III—Experiments and Thermodynamic Modeling of the Fe-Mn-Al-O System

“…The Gibbs free energy of the Mn-O pair exchange reaction, Dg MnO was determined to reproduce the Mn-O relation of the Mn-rich side in the Fe-Mn melt at 1873 K (1600°C) measured by Shevtsov et al [41] and its temperature dependence of the relation measured by Takahashi and Hino, [42] respectively. As a result, the calculated O solubility in pure Mn melt fitted reasonably well with Schenck et al's [35] data as shown by a solid line in Figure 3.…”

“…However, the reported O solubility data are scattered significantly as shown in Figure 3. Shenck et al [35] measured the O solubility using an induction furnace under deoxidized Ar atmosphere. However, there were noticeable discrepancies because of the impurities in their samples (N: 127-620 ppm, Fe: 1100-2900 ppm, C: 190-742 ppm, and Si:~100ppm).…”

The impact of work environment on chemical and phase composition changes of magnesia-spinel refractories used as refractory lining in secondary metallurgy device

“…In Ref. [5], the calculated solidus is in good agreement with the experimentally obtained solidus. Also, through EDS analysis, it could be seen a strong presence of iron in point 1 of the Figure 3, see Table 3.…”

“…4 -liquidus curve 3) is appreciably higher than the calculated one from an ideal-solution model in Ref. [5] (Fig. 4 -liquidus curves 1 and 2).…”

Phase equilibrium data and liquidus for the system “MnO”-CaO-(Al2O3 + SiO2) at Al2O3/SiO2 = 0.41

“…[2] The solidus temperature at each compo-THE principal components of the slags used in silicomansition was determined from visual observation of the start ganese and high-carbon ferromanganese smelting processes of melting. [2] The solidus temperature at each compo-THE principal components of the slags used in silicomansition was determined from visual observation of the start ganese and high-carbon ferromanganese smelting processes of melting.…”