Activities of dilute NiO in Na2O•2SiO2 by electromotive force measurements

Despite the industrial and theoretical significance of NiO De Khotinsky wax slags, there is a paucity of accurate thermodynamic data for these systems. The thermodynamic properties of NiO in calcium and sodium silicates have been studied (14). However, the thermodynamic properties of dilute solutions of NiO in silicate slag have not heretofore been reported. It was the purpose of the present study to investigate dilute solutions of NiO (XNiO < 0.0125) in Na20.2Si02. Dilute solutions are ideally ZrO2-CaO tube suited for understanding the effects of complex formation in silicates and the relationships between structure and thermodynamic properties. Furthermore, fundamental slag studies aid in the understanding and optimization of industrial pyrometallurgical processes.En d\ue9pit de l?importance industrielle et th\ue9orique des laitiers de paraffine NiO De Khotinsky, les donn\ue9es thermodynamiques pr\ue9cises pour ces syst\ue8mes demeurent peu abondantes. Les propri\ue9t\ue9s thermodynamiques de NiO dans les silicates de calcium et de sodium ont \ue9t\ue9 \ue9tudi\ue9es. Toutefois, on n?a pas jusqu?ici fait \ue9tat des propri\ue9t\ue9s thermodynamiques des solutions dilu\ue9es de NiO dans le laitier de silicate. Cette \ue9tude avait pour objet l?investigation de solutions dilu\ue9es de NiO (XNiO < 0,0125) dans Na20Peer reviewed: YesNRC publication: Ye