HIsarna process of iron making Jun28

HIsarna process of iron making...

HIsarna process of iron making HIsarna process is an ironmaking smelting reduction process where liquid iron is produced directly from iron ore fines and coal. This process eliminates prior processing of raw materials as needed by the blast furnace process. This process is an initiative of the ULCOS (ultra low CO2 steelmaking) consortium of European steelmakers. HIsarna is a combination of HIsmelt technology of Rio Tinto and the Isarna technology developed at Tata Ijmuiden. The process consists of pre-reduction of ore fines in cyclone converter furnace (CCF) of Isarna technology and bath smelting of iron in smelt reduction vessel (SRV) 0f HIsmelt process. The name of the process has been given by combining the names of the two technologies (‘HI’ from HIsmelt and ‘sarna’ from Isarna, a celtic word for iron). The process represents a new, potentially more efficient way of making iron. The technology is being developed in order to substantially reduce carbon emissions from the iron making process. Initial developmental work The very first attempt of applying cyclone technology in the reduction of the iron ore was attempted at Koninklijke Hoogovens in 1960s but the attempt was abandoned. Another serious attempt was made in 1986 but because economic crisis the project was put on the back burner until the early 1990s. The project was revived when coke supply became scarce during mid 1990s. CCF technology was then developed at a pilot scale with capacities of 15 to 20 tons per hour of ore feed. The attempt was again halted in 1999 due to successful implementation high pulverized coal injections in the blast furnaces. HIsmelt originally started By CRA (now Rio Tinto) in 1980s a 2 tons per hour HIsmelt pilot plant at Maxhutte, Germany followed by 8 tons per hour pilot plant in...