Patent ID: 6454833
Filing Date: 2002-09-24
Classification: C21B

Abstract:
A plant for producing liquid pig iron (9) or steel pre-products from fine-particulate reduced iron-containing material (4), comprising a melter gasifier (1) having supply and discharge ducts (3, 5, 6, 7) for adding carbon-containing material (2), iron-containing reduced fine-particulate material (4), for withdrawing the generated reducing gas and for feeding oxygen, and further comprising a tap (11) for slag and iron-melt, characterized in that a lower section (8) of the melter gasifier (1) serves for collecting the molten pig iron (9) and the liquid slag (10) and a superimposed central section for accommodating a fixed bed (20) of solid carbon carriers and subsequently an upper section for accommodating a fluidized bed (21) and that a calming space is provided there above, that at the level of the fluidized bed (21) at least one mouth of a conveying duct (7) for fine-particulate reduced material (4) is provided in the side wall of the melter gasifier (1) and that an oxygen supply duct (23) is provided in immediate proximity to the conveying duct (7) for fine-particulate reduced material (4), wherein said conveying duct (7) runs to the melter gasifier via a fluidized bed sluice, and that a duct (31) supplying a conveying gas for the fine-particulate reduced material (4) runs into the fluidized bed sluice (16).