The effect of slag composition on impurity transfer

Finally the Gibbs energy for the anion exchange is given by the sum of these processes 

Of these terms those involving iron and calcium can be compared as an example of the exchange under ironmaking conditions. Experimental values for the corresponding equilibria between gas and slag yield values of the sulphide capacities 

Using the method described above, the sulphide capacity of a multicomponent slag may be calculated with the exchange oxide/sulphide equilibria weighted with the metal cation fractions, thus 

Similarly the removal of phosphorus from liquid iron in a silicate slag may be represented by the equations 

352 Thermochemical Processes Principles and Models I Separation of the cations. 

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