Abstract
To develop an oxygen flash smelting technology for copper concentrates, the combustibility of two concentrates with different fuel ratios was investigated in an industrial oxygen stream in terms of oxygen pressure, temperature, sulfur elimination, particle size and so on. The experiments were carried out in an Outokumpu flash smelting fUrnace, of which the smelting rate was about 1t/h of coPPer concentrate. Another experiment was also implemented under the condition of using oxygen-enriched air with about 35% O2, and smelting performances of oxygen flash smelting were compared in dust generation as well as oxygen efficiency with those of oxygen-enriched air flash smelting.
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