Process for producing pig iron in the blast furnace with the supply of reducing gas into the blast furnace shaft

摘要

The invention relates to a method for producing pig iron in the blast furnace with the supply of reducing gas, which, with conditioned composition and temperature control in the lower part of the high furnace shaft and / or in the carbon brushes bag and / or the detent is blown, without the in the injection of technical gases arising disadvantages are effective.This object is achieved according to the invention by means of the partial oxygen gasification of highly reactive liquid hydrocarbons or dust-like solid carbon carriers, in which the reduction gas production directly to the individual injection points at the blast furnace or in separate devices arranged outside the blast furnace, and the gasification conditions are adjusted so that the reducing gases produced at temperatures of 800°C. to 1000°C. minimum (co₂ + H₂O) - concentrations.