Solubility of oxygen and sulphur in copper-iron mattes.

The concentrations of oxygen and sulphur in unsaturated and magnetite-saturated Cu-Fe mattes were measured as a function of oxygen and sulphur pressure and iron metal weight fraction of the matte. The liquid matte samples were equilibrated with streams of gas at known pressures of S2 and O2. The point of magnetite saturation in an experimental run was found to correspond to the condition of maximum measured oxygen concentration in the equilibrated matte sample. The oxygen concentration in magnetite-saturated mattes at low sulphur pressures depends only on the iron metal weight fraction of the matte. For both unsaturated and magnetite-saturated mattes, the correlation for sulphur is a complex equation of oxygen and sulphur pressures and the iron metal weight fraction. For constant oxygen and sulphur pressures, the sulphur concentration is a quadratic function of the iron metal weight fraction.
The concentrations of oxygen and sulphur in unsaturated and magnetite-saturated Cu-Fe mattes were measured as a function of oxygen and sulphur pressure and iron metal weight fraction of the matte. The liquid matte samples were equilibrated with streams of gas at known pressures of S2 and O2. The point of magnetite saturation in an experimental run was found to correspond to the condition of maximum measured oxygen concentration in the equilibrated matte sample. The oxygen concentration in magnetite-saturated mattes at low sulphur pressures depends only on the iron metal weight fraction of the matte. For both unsaturated and magnetite-saturated mattes, the correlation for sulphur is a complex equation of oxygen and sulphur pressures and the iron metal weight fraction. For constant oxygen and sulphur pressures, the sulphur concentration is a quadratic function of the iron metal weight fraction.