Method for determining activity of components in slag
Molten slag plays an important role in absorbing or separating impurities in the smelting process,enriching useful metal oxides and refining metals,and can isolate air to protect metals from environmental po-llution and reduce metal heat loss through insulation.The above functions of slag are achieved by controlling the chemical composition and physical and chemical properties of slag.Activity is an important parameter in metallurgical physical chemistry.The correct activity values of components are a prerequisite for analyzing the thermodynamics of metallurgical reactions and the basis for determining the interface concentration in the re-action kinetics equation,which have important theoretical and practical significance for steel quality control,slag system design,refractory material development,and on-site production practice.The paper introduces the determination methods of component activity of slag,including Chemical equilibrium method,electromotive force method,vapor pressure method,calculation method,etc.Summarize the previous studies on the activi-ty determination of slag components,aiming to provide reference and reference for the research of high-perfor-mance smelting slag.
activitymolten slagchemical equilibrium methodelectromotive force method
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