METHOD FOR INCREASING THE PRODUCTIVITY OF STEEL PRODUCTION

摘要

The invention relates to method for increasing the productivity of steel production, in particular for reducing delivery times, whilst increasing the steel quality, controlling the quality atc, by using two-vessel-and thin-slab-technology, on the basis of pig iron (1), and iron sponge (2) in electric are furnace and oxygen-blowing method(21) and procedures, after continuous casting, in a thin slab plant warm band in a finalizing mill train, in that pig iron(1) and iron sponge (2) are charged in a relationship of 90:10, 50:50 up to 100:1 with a scrap metal part as cooling agent and/or an iron sponge part at 70% pig iron, and in that the times for the melting sequence are reduced by way of a freely selectable maximum achievable oxgen quantity per time unit in that at least one oxgen blowing lance the oxgen density is increased specifically up to 2-4Nm3/t minute and the blowing time is reduced to about 12-16 minutes