Plants and methods for producing pig iron and / or sponge iron (Plant and process for producing raw iron and or sponge iron)

摘要

Plants and methods for the production of pig iron and / or sponge iron.;The plant for producing pig iron and / or sponge iron includes a direct reduction shaft 1 for molten steel, a melt chamber vaporizer 3, a supply pipe 4 for reducing gas connecting the melt chamber vaporizer 3 and the shaft 1, A transfer pipe 13 for reducing product formed on the shaft 1 connecting the shaft 1 and the melt chamber vaporizer 3, a top gas discharge pipe 14 discharged from the shaft 1 and a melt chamber vaporizer 3 Containing gas and a carbon carrier feed pipe (5, 6, 7) and a pig iron and slack tap (1) raised to the melting furnace (3).;In order to treat not only light but also spectroscopies within a wide range with energy efficiency and product-optimized composition ratios, the plant comprises at least one fluid bed reactor (15, 16) A reducing gas supply line 21 led to the fluidized bed reaction path 15 and a degassing discharge line 22 and discharge means 34, preferably a fluidized bed reaction path 15, 16, Gas exhaust pipe 14 of the shaft 1 and the degassing outlet pipe 22 of the fluidized bed reaction furnace 15 are arranged in the same manner as the cleaner 23, And connected to the heating means (25, 26) connected to the reducing gas supply pipe (21, 25) and subsequently discharged to the reducing gas supply pipe (21) of the fluidized bed reaction furnace (15, 16).