Finex® Environmentally safe ironmaking
Finex is an innovative ironmaking process jointly developed by Primetals Technologies and the Korean steel producer Posco for the production of hot-metal – based on the direct use of fine ore and non-coking coal.
In the Finex process, fine iron ore is charged at the top of a cascade of fluidized-bed reactors where it is heated and reduced to direct-reduced iron (DRI) by means of a reduction gas – derived from the gasification of the coal – that flows in the counter-current direction to the ore. The DRI fines are processed to hot-compacted iron, transferred to a charging bin positioned above the melter gasifier and then charged into the melter gasifier, where melting takes place. The tapped product – liquid hot metal – is equivalent in quality to the hot metal produced in a blast furnace or Corex plant.