High Oxygen Injection in Copper & Nickel Converter  [ Return towards  Applications  ]

Oxygen is used in an oxidation process in Copper/Nickel converters. By injecting enriched air in the liquid matte, the sulphur combines into SO2 which is evacuated in the off-gases.


ALSI, the AIR LIQUIDE Shrouded concentric Injector (inside O2/annulus N2), has been designed to replace conventional tuyeres in the converter and help you to overcome operational problems including tuyere blockage and refractory erosion at the tuyere line.

• Benefits

Permitted enrichment levels of up to 60% O2
Increased converter productivity
Reduction in volume of off-gases
Elimination of tuyere punching
Better treatment of solid (scrap and reverts)
Stronger off-gases

• References

The benefits of the shrouded injector have already been demonstrated in Hoboken - UNICORE (Belgium), Falconbridge (Canada), TCI (Thailand), ...