Journal ArticleDOI
Study on the foaming of CaO-SiO 2 -FeO slags: Part I. Foaming parameters and experimental results
Kimihisa Ito,Richard J. Fruehan +1 more
TLDR
In this paper, the effect of slag composition on foaming in iron and steelmaking processes was quantitatively studied for CaO-SiO2-FeO slags in the temperature range of 1250 °C to 1400 °C.Abstract:
In order to understand the effect of slag composition on foaming in iron and steelmaking processes, slag foaming was quantitatively studied for CaO-SiO2-FeO slags in the temperature range of 1250 °C to 1400 °C. It was found that slag foaming could be characterized by a foaming index (Σ), which is equal to the retention or traveling time of the gas in the slag, and the average foam life ( τ). The effects of P2O5, S, MgO, and CaF2 on foaming were studied. As expected, slag foaming increased with increasing viscosity and decreasing surface tension. It was found that suspended second-phase solid particles such as CaO, 2CaO SiO2, and MgO stabilized the foam and had a larger effect on foaming than changes in viscosity and surface tension for the slags studied.read more
Citations
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Journal ArticleDOI
A critical review of the growth, drainage and collapse of foams.
TL;DR: This review focuses on the current knowledge regarding (i) the mechanisms governing foamability and foam stability, and (ii) models for the foam column kinetics, and critically review and summarize the models that describe macroscopic foam behaviors within the context of the mechanisms involved.
Journal ArticleDOI
Aluminum Foam Stabilization by Solid Particles
S.W. Ip,S.W. Wang,Jim M. Toguri +2 more
TL;DR: In this article, a room temperature water model and a high temperature molten aluminum system were designed and constructed to investigate the effect of solid particles on the stabilization of foams, and the average foam life was used to evaluate the stability of the foam.
Journal ArticleDOI
Slag foaming in bath smelting
R. Jiang,Richard J. Fruehan +1 more
TL;DR: In this article, the foaming index of bath smelting-type slags (CaO-SiO2-FeO, CaO-MgO-Al2O3-NiO) was measured at 1773 K. The results showed that the foam stability decreases with increasing FeO (FeO > 2 pct) content.
Journal ArticleDOI
Effect of CaO Addition on Iron Recovery from Copper Smelting Slags by Solid Carbon
TL;DR: In this paper, the effect of flux (lime) addition on the reduction behavior of iron oxide in copper slag by solid carbon at 1773 K (1500 °C) was investigated.
Journal ArticleDOI
Effect of the bubble size and chemical reactions on slag foaming
Y. Zhang,Richard J. Fruehan +1 more
TL;DR: In this article, the foam stability in terms of the foam index for a bath-smelting type of slag (CaO-SiO2-Al2O3-FeO) was determined for different bubble sizes.
References
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Journal ArticleDOI
Surface Tension and Density of FeO-CaO-SiO2 Melts
TL;DR: In this article, the surface tension and density of FeO-CaO, FeO -SiO2, and FeO O-30CaO-Si02 melts were measured at temperatures from melting points to 1430•Ž by the maximum bubble pressure method.
Related Papers (5)
Study on the foaming of CaO-SiO2-FeO slags: Part II. Dimensional analysis and foaming in iron and steelmaking processes
Kimihisa Ito,Richard J. Fruehan +1 more