Melter-gasifiers

COREX A two-stage ironmaking process. Iron ore is reduced in a vertical shaft furnace and then melted in a melter gasifier, which also generates reducing gases for the shaft furnace. Developed by DVAI, Dtisseldorf, and first used in 1989 at the Pretoria works of Iscor, South Africa. Ten plants were being planned in 1997. 

COREX Process (26). The COREX process began as an advanced process for iron making, not for coal gasification. It uses an oxygen-blown combination coal gasifier/iron melter. Coarse-size coal and hot pre-reduced iron are fed to this gasifier/melter. This process favors coals that have a minimum of fines and are low in sulfur and volatiles. 

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