| Abstract |
| Copper matte with 59% Cu and 22.6% S in weight ratio was oxidized at 1523K by bubbling of Ar+O_2 gas through a submerged nozzle. The effects of oxygen partial pressure and flow rate of gas on the oxidation rate of matte were discussed. The desulfurization rate and evolution rate of SO_2 gas of copper matte were significantly influenced by the oxygen partial pressure. However, the dependence of gas flow rate on the desulfurization rate and evolution rate of SO_2 gas were confounded. The desulfurization rate and evolution rate of SO_2 gas of copper matte were described by the mass transfer rate through the gas film around the rising gas bubbles. The calculated results reasonably reflect the observed values of the desulfurization rate at the initial stage of blowing. |
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| Key Words |
| Copper, Matte, Oxidation, Desulfurization, Mass transfer, Bubbling |
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