Primetals Technologies

COREX

COREX® — COST-EFFICIENT AND ENVIRONMENTALLY FRIENDLY IRONMAKING

Corex, the unique smelting-reduction process allows for the cost-effective and environmentally friendly production of hot metal from iron ore and coal.

In the Corex process, all metallurgical work is carried out in two separate process reactors—the reduction shaft and the melter gasifier. Because coking and sintering plants are not required, and a lower-cost coal compared to the blast furnace route can be used, substantial cost savings of up to 20% can be achieved in the production of hot metal. Corex plant emissions contain only insignificant amounts of NOx, SO2, dust, phenols, sulfides, and ammonia, so emission values come in below the maximum values permitted by European standards. Furthermore, waste-water emissions are far lower compared with the conventional blast furnace route.