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Modelling of slag foaming

Ironmaking and Steelmaking, 2010
AbstractIn this work, silicone oils of different viscosities were used to simulate slag foaming. The experimental results showed that the variations of foaming height with superficial gas velocity and liquid viscosity do not show simple increasing trends.
Du Sichen
exaly   +2 more sources

Suppression of slag foaming by a sound wave

open access: yesUltrasonics Sonochemistry, 2000
The aim of this work was to study the effects of sound frequency, sound intensity and viscosity of slag on the slag foaming rate and the steady-state foam height. Experiments were carried out using two slags (BaO-B2O3) melted at a temperature of 1223 or 1273 K, as well as water-glycerin solutions at room temperature.
Sergey V Komarov   +2 more
exaly   +3 more sources

An Adaptive, Intelligent Control System for Slag Foaming

Applied Intelligence, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Charles L Karr
exaly   +3 more sources

Physicochemical properties of foaming slags

International Materials Reviews, 2004
Molten slag foams can be considered very dynamic (non-equilibrium) systems, hence their behaviour in industrial processes can be difficult to predict and control. This paper reviews the role of physicochemical properties of molten slags, and the types of stability mechanisms likely to be operating in slag foams.
C. Nexhip, Shouyi Sun, S. Jahanshahi
openaire   +1 more source

Composite foamed alkali-activated concrete with slag and steel slag

Magazine of Concrete Research, 2020
Thermally expandable foaming microspheres (FMS) are used as a foaming agent in many different fields due to their excellent dimensional stability and elastic properties. In this study, lightweight thermal insulation materials were prepared by adding FMS to foamed concrete containing alkali-activated steel slag and blast-furnace slag.
Lu Zeng   +5 more
openaire   +1 more source

Effect of temperature on slag foaming

Metallurgical and Materials Transactions B, 1995
Slag foaming has become important not only for the modem electric arc furnace but also for basic oxygen steelmaking and new ironmaking processes, such as bath smelting. In the electric arc furnace, foaming practices are widely used to shield the refractories from the arc and to protect metal from the atmosphere.
Bahri Ozturk, R. J. Fruehan
openaire   +1 more source

Slag foaming in bath smelting

Metallurgical Transactions B, 1991
Slag foaming measurements in terms of the foaming index (∑) were conducted on bath smelting-type slags (CaO-SiO2-FeO, CaO-SiO2-MgO-Al2O3-FeO) at 1773 K. It was found that the slag foam stability decreases with increasing FeO (FeO > 2 pct) content and basicity. For the slag system (CaO-SiO2-FeO), no stable foam was observed at very low FeO content (
R. Jiang, R. J. Fruehan
openaire   +1 more source

Slag Foaming in an Electric Arc Furnace

open access: yesISIJ International, 2009
Slag foaming in an electric arc furnace (EAF) is examined using a mathematical model of the EAF to compute the CO generation rate and slag chemistry and laboratory measurements of the foam index. The foam height limited by either the foam stability or from the amount of slag present was computed for a high productivity furnace using relatively large ...
Hiroyuki Matsuura, Richard J Fruehan
exaly   +3 more sources

Modelling study of slag foaming phenomenon

Steel Research, 2000
A one-dimensional model based on mass and momentum conservations has been developed to predict the heights of foams caused by gas injection. In the development of the model, a dimensionless number, N-foam = u(s)[(3C(d))/(4d(b)g)](1/2) has been deduced to characterise the foaming behaviour.
Miao-yong Zhu, Du Sichen
openaire   +1 more source

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