Patent ID: 6251162
Filing Date: 2001-06-26
Classification: C21B,Y02P

Abstract:
A method for producing liquid pig iron or liquid steel pre-products from charging substances, comprising the steps of:reducing iron ore and optionally fluxes to sponge iron in a reduction zone (12), said reduction zone (12) is formed within a reduction reactor (1);melting said sponge iron in a melt-down gasifying zone (8) formed within a melter gasifier (3) under a supply of carbon carriers and oxygen-containing gas, and a CO- and H.sub.2 -containing reducing gas is produced;introducing the produced CO- and H.sub.2 -containing reducing gas into the reduction zone (12); andwithdrawing an export gas containing CO.sub.2 from the reduction zone (12), said export gas containing CO.sub.2 is conducted to a consumer (20), wherein the export gas containing CO.sub.2 is subjected to CO.sub.2 removal in the consumer (20) and at least a portion of an offgas from the consumer (20), having a high CO.sub.2 content, separated during the CO.sub.2 removal is introduced into the melt-down gasifying zone (8) so that it can react with the carbon carriers to form carbon monoxide.