2001•Acta Scientiarum Naturalium Universitatis SunyatseniRequires access

THE APPLICATION OF THE LAW OF MASS ACTION IN COMBINATION WITH THE COEXISTENCE THEORY OF SLAG STRUCTURE TO THE MULTICOMPONENT SLAG SYSTEMS

Zhang

Abstract

It is shown by the the law of mass action in combination with the coexistence theory of slag structure that K'Mn=NMnO/(NFeO[%Mn]) does not change with basicities and maintains constant at constant temperature; the oxidizing capabilities of multicomponent slag systems containing CaO, MgO etc., can be expressed by NretO=NFeO+6NFe2O3+8NFe3O4; the desulfurizing capabilities of various basic oxides for multicomponent slag systems can be calculated by Ls=8(KCasNCaO +KMgsNMgO +KFesNFeO)∑ n/[%O]; the dephosphorizing capabilities of CaO-MgO-FeO-Fe2O3-P2O5 as well as CaO-FeO-Fe2O3-Al2O3-P2O5 molten slags expressed respectively by LpO=(%P2O5)/[P]2 = 141.g4[%O] ∑nK00(1 +4 2 3 3 4KsN2CaO + K6N3CaO + K7N4CaO + KsNMgO + K9N3MgO + K10NFeO + K11NFeO);2 3 4LpO=(%P2O5)/[P]2 = 141.94[%O ∑nK00(1 + K10N2CO + K11NcaO + K12N4CaO+ K13N3FeO + 14N4FeO) have good agreement with practical values.

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Key concepts: Slag (welding), Coexistence theory, Oxidizing agent, Law of mass action, Metallurgy, Thermodynamics, Action (physics), Constant (computer programming)