Cyclone Converter Furnace (CCF) is a joint project of Corus, the Nederlands and Ilva, Italy. The most important part of the project is the development of cyclone reactor. In the cyclone, the iron ore is pre-reduced and melted. The molten mixture falls in to the lower part of the vessel where the reduction is completed. The fuel consists of granular coal which is injected together with oxygen in the lower part of vessel.