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. The emphasis of the review relates to slag foams produced under low superficial gas velocities (such as in an electric arc furnace). Here, the 'lifetime' of bubble films in the top layer can be considered the rate limiting step for coalescence and collapse of the foam in a metallurgical reactor.
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Nexhip et al. (2004) studied this question.
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