Patent ID: 6179896
Filing Date: 2001-01-30
Classification: C21B

Abstract:
Method of producing molten pig iron (9) or steel pre-products from an ore which in at least one reduction zone is reduced to partially and/or completely reduced sponge iron (4) which is melted down in a melt-down gasifying zone (8) of a melter gasifier (1) under supply of carbon-containing material and oxygen and while simultaneously forming a reducing gas in a bed (13) formed of solid carbon carriers (2), optionally upon previous complete reduction,said method comprising charging at least the sponge iron (4) to the melt-down gasifying zone (8) non-continuously, under formation of areas (14) of piled-up sponge iron which are embedded in the bed (13) of carbon carriers (2) and which are superposed and which are separated by solid carbon carriers (2), wherein each of the areas (14) of piled-up sponge iron extends over a cross section of the melt-down gasifying zone, while leaving a cross sectional portion thereof free of said sponge iron, and wherein the reducing gas forming in the melt-down gasifying zone (8) flows past the areas (14) of piled-up sponge iron under melting of the same and upwards through the portions of the cross section zones (15) that are free from sponge iron and formed from carbon carriers (2), and flows through the said zones.