Influence of SiO2 on the Equilibrium in the Cu-Ni-Cu2O-NiO System

The equilibrium between a copper-nickel alloy and an oxide melt in the Cu₂O-NiO-SiO₂ system was studied experimentally. The distribution coefficients of nickel were determined as a function of the content of silicon dioxide, and the ratio of activity coefficients of nickel and copper oxides at 1300°C was found.     

Determining the Activity Coefficients of Copper and Nickel Oxides in Melts of the System Cu2O-NiO

Equilibria between a copper-nickel alloy and oxide melt of the binary system Cu₂O-NiO were studied and the activity coefficients of copper and nickel oxides at 1573 K in the homogeneity region of the oxide melt (up to 11.6 mol % NiO) were determined. Similar values were also found by calculation from the phase diagram of Cu₂O-NiO.     

Solubility of Carbon in Sulfide Melts of the System Fe-Ni-S

The solubility of carbon in iron-nickel sulfide melts at 1673 K was studied in the entire range of compositions of the Fe-FeS-Ni₃S₂-Ni tetragon. The boundaries of the stratification area were determined in this system upon its being saturated with carbon. Lines of carbon isosolubility are plotted in the tetragon field outside the stratification area.     

Activity of iron and nickel in the copper-rich region of compositions of the copper-iron-nickel system in the liquid state

Activities of iron and nickel in the copper-rich part of the Cu-Fe-Ni system in the liquid state at 1350°C were calculated using model concepts from data on the boundary binary systems.     

Distribution of Copper,Nickel, Cobalt and Iron between Products of Smelting of Copper Concentrate Obtained by Flotation of Converter Matte

An experimental study of the equilibrium between the bottom phase (sulfide melt or copper) and slag in neutral and oxidizing atmospheres yielded dependences of the content of dissolved copper, nickel, and cobalt in the slag on that of sulfur in the sulfide melt and also the dependence of the content of dissolved copper and nickel on that of nickel in the metallic melt. The distribution coefficients of the metals between copper and slag were determined and compared with the results of other investigations.     

Thermodynamic properties of liquid Cu-Ni-Co-Fe alloys

Data on boundary binary systems in conjunction with geometric models and the Redlich-Kister method were used to calculate the integral thermodynamic characteristics and the activities of the components for liquid Cu-Ni-Co-Fe alloys at 1600°C.     

Thermodynamic Properties of Liquid Alloys of the System Nickel-Copper-Iron

The integral molar excess Gibbs energy and the enthalpy of mixing of liquid alloys of the ternary system nickel-copper-iron at 1600°C were calculated by various methods from data on boundary binary systems.     

Applicability of the Zdanovskii rule to sulfide melts

Applicability of the Zdanovskii rule to melts of the systems Fe-Ni-S and Cu-Ni-S was studied.     

Thermodynamic Properties of Liquid Alloys of the System Iron-Copper-Cobalt

Integral molar excess Gibbs energy, enthalpy of mixing of liquid alloys of the ternary system iron-copper-cobalt, and component activities at 1600°C were calculated by various methods from data on boundary binary systems.